Grubeulepis ecuadorensis Pettibone 1969

Grubeulepis ecuadorensis

Pareulepis fimbriata.—Hartman, 1939, p. 79, pl. 23: figs. 280, 282-285, 287, 288 (part; Velero station 216-34). [Not Eulepis fimbriata Treadwell, 1901.]

MATERIAL EXAMINED.—Cape San Francisco, Ecuador, 36.5 meters, muck, Velero station 216-34, 11 February 1934—holotype (AHF).

DESCRIPTION.—Length of holotype 35 mm, width, including setae, 8 mm, segments 40, last small. Elytra 12 pairs, becoming more elongate posteriorly; first pair oval, with entire margins (no papillae); rest of elytra with variable number lateral leaflike processes (3-13) arranged between anterior and posterior rounded lobes; processes digitiform, not articulate (Figure 23e-i; plate 23: figs. 285, 287, in Hartman, 1939). Branchiae 12 pairs, inflated, with distal branchial cirrus (Figure 22a). Dorsal cirri, on segments 3 and 6, subulate (Figure 21e; plate 23: fig. 280, in Hartman, 1939). Posterior lamellae, beginning on segment 28, subcordiform to subconical (Figure 23a,b).

Prostomium covered by segment II and attached middorsally by more than half its length; median antenna short, oval, inserted anterodorsally on prostomium; lateral antennae conical, inserted more ventrally; palps elongate-tapered, extending beyond tentacular cirri; 3 pairs small eyes anterolaterally in close groups; nuchal organs clavate, lateral to prostomium (Figure 21a). Tentacular parapodia (I) narrower basally, enlarged distally, each with dorsal and ventral tentacular cirri, subequal in length, 2 acicula and 2 bundles of smooth and spinous capillary setae (Figure 21a,b). Ventral buccal cirri on segment II thicker and longer than those following (Figure 21c).

Biramous parapodia supported by light amber-colored acicula and neuropodial hammer-shaped distal plates (Figures 22a,b; 23a,b). Notopodial acicula with hooked tips. Notopodial capillary setae smooth and spinous, forming long, spreading bundles emerging from posterior parts of notopodia; stout light amber-colored notopodial hooks, beginning on segment III, smooth, tapering distally to fine tips or flattened spatulate (Figure 22c). Neuropodial acicula with hammer-shaped distal plates. Neurosetae of several kinds: 1-2 upper pectinate setae (Figure 22d); widely bilimbate neurosetae with short tips in anterior parapodia (Figure 21d,f,h); limbate and non-limbate neurosetae with tapering tips (Figure 22e,f); single dark acicular neuroseta in segments 3-8 (Figure 21g). Upper neurosetae of posterior region much stouter than lower ones, curved downward, tapering to fine tips, finely spinous along bend (Figure 23a-d). Ventral cirri of anterior few segments subulate, tapered (Figure 21e); following ventral cirri globular, with short slender tips (Figure 22a,b). Pygidium with single long anal cirrus on right side; cirrus finely papillate along one side; left cirrus short, bulbous. Pharynx not extended.

DISTRIBUTION.—Central Pacific (off Ecuador). In 36.5 meters.

Grubeulepis mexicana (Berkeley and Berkeley), new combination

Eulepethus mexicanus Berkeley and Berkeley, 1939, p. 328, figs. 4-7.

Pareulepis fimbriata.—Hartman, 1939, p. 79, pl. 23: figs. 281, 286 (part; Velero station 770-38; Mission Bay, California); 1961, p. 54.—Reish, 1968, p. 73. [Not Eulepis fimbriata Treadwell, 1901.]

MATERIAL EXAMINED.—Isle Grande Bay, Mexico, M/S Stranger, 11 meters, fine sand, 8 April 1937, W. Williams, collector—holotype of Eulepethus mexicanus (USNM 32893).

Bahia de los Angeles, Gulf of California, Mexico, 30 meters, brown silty very fine sand, station 45, 27 April 1962, J. L. Barnard, J. R. Grady, and

D. J. Reish, collectors—3 specimens (USNM 39283).

Off San Juan Light, Guatemala, 13-20 meters, sand, shells, mud, Velero station 770-38, 11 January 1938—2 specimens (AHF).

Southern California: Mission Bay, intertidal—4 specimens (AHF). Newport Bay, intertidal—1 specimen (AHF). Velero station 4720-56, 33° 37′ 39″ N, 117° 58′ 16″ W, 15 meters, dark green silt, broken shells, 21 November 1956—3 small specimens (AHF). Velero station 6731-59, Newport shelf, 34° 17′ 53″ N, 119° 21′ 05″ W, 7 meters, very fine silty sand, 6 December 1959—4 small specimens (AHF).

DESCRIPTION.—Length up to 33 mm, width, including setae, up to 9 mm, segments up to 37. Holotype of E. mexicanus rather small, with length of 15 mm for 38 segments. Elytra 12 pairs, becoming more elongate posteriorly; first pair of elytra with anterior fringe of minute papillae (about 7); rest of elytra with variable number digitiform lateral processes (3-25) arranged between anterior and posterior rounded lobes; some of processes on more anterior elytra biarticulate (Figures 24a; 27e-h; pl. 23: figs. 281, 286, in Hartman, 1939). Branchiae 11 pairs, inflated, with distal branchial cirrus (Figure 26b). Dorsal cirri, on segments 3 and 6, subulate (Figures 24a, 25e). Posterior lamellae, beginning on segment 27, oval to lanceolate (Figures 24c, 27a).

Prostomium nearly covered by segment II and attached along midline; median antenna short, globular, inserted anterodorsally on prostomium; lateral antennae longer, conical, inserted more ventrally; ventral palps elongate-tapered, extending slightly beyond tentacular cirri; 3 to 5 pairs small eyes visible (easily overlooked); nuchal organs oval, lateral to prostomium (Figures 24a,b; 25a). Tentacular parapodia (I) with short subulate tentacular cirri, lower pair slightly longer than upper pair; 2 acicula; 2 tufts capillary setae (Figures 24a, 25a, b). Ventral buccal cirri on segment II thicker and longer than those following (Figure 25 a, c).

Biramous parapodia supported by light amber-colored

acicula and neuropodial hammer-shaped distal plates (Figure 26a,b). Notopodial acicula with hooked tips. Notopodial capillary setae smooth and spinous, forming long, spreading bundles on posterior parts of notopodia; stout light amber-colored notopodial hooks, beginning on segment III, with tips finely tapered or flattened spoon-shaped, finely spinous on upper distal part (Figures 24d, 25f, 26c, 27b). Neuropodial acicula with hammer-shaped distal plates. Neurosetae of several kinds: 1-2 upper pectinate setae (Figure 25g); stout acicular neurosetae in some anterior segments (Figure 25i); limbate and non-limbate capillary neurosetae (Figures 25d, h,j; 26d). Upper neurosetae of posterior region stouter and darker than lower neurosetae, bent downward, corrugated or serrulate along bend (Figures 24c,e,f; 27a,c,d). Ventral cirri of few anterior segments slender, tapered (Figure 25e); rest globular, with short slender tips (Figure 26a,b). Pygidium with single long anal cirrus on right side; cirrus finely papillate along one side. Pharynx not extended.

DISTRIBUTION.—Southern California, Gulf of California, Mexico (Isle Grand Bay), Guatemala. Intertidal to 30 meters.