Zoantharia Gray 1832

Figure 2.Longitudinal section of Neozoanthus caleyi sp. n. specimen HI225 showing endodermal sphincter muscle (=sm). A Light microscope B scanning electron microscope. Both scales =200 µm.

Figure 3.Neozoanthus caleyi sp. n. in situ around Heron Island on the Great Barrier Reef, Queensland, Australia. A Specimen HI214 at Sykes Reef, depth=9 m, November 23, 2009 B Close-up of a single polyp showing yellow coloration at base of tentacles; specimen HI145 at Sykes Reef, depth=18 m, November 18, 2009 C Specimen HI231 at Heron Channel, depth=23 m, November 24, 2009 D Uncollected specimen at Heron Channel, depth=approximately 20 m, November 2011. Scales approximately 1 cm. A, B taken by JD Reimer, C, D taken by Gary Cranitch.

Figure 5.Cnidae of Neozoanthus caleyi sp. n. and Neozoanthus uchina sp. n. from the tentacles, pharynx, and filaments showing their relative size. Type abbreviations: Sp=spirocysts, H=holotrichs, LH=large holotrichs, SH=small holotrichs, B=basitrichs, SH?=potential small holotrichs, pM=p-mastigophores. Size and frequency data are given in Table S1.

Figure 1.Internal structure of Neozoanthus uchina sp. n. showing encrustation in outer mesoglea and ectoderm, characteristic of Neozoanthus spp., with irregularly-sized encrustation A light microscope histological cross-section, and B scanning electron microscope image. Both images of specimen RMNH Coel 40098 (Table 2). Abbreviations: cm=complete mesenteries, e= sand/detritus encrustation (in B) or where encrustation existed before decalcification (in A), im=incomplete mesenteries, ec=ectoderm, en=endoderm, m=mesoglea, ss=encrusted sponge spicules. Scales: A=100 µm, B=200 µm.

Figure 4.Neozoanthus uchina sp. n. in situ. A Partially closed polyps showing lack of encrustation at oral end B Colonies of two different color morphotypes C Close-up of polyps of the same color morphotype as on the left in B) D Polyps showing variation in oral disk color where the dorsal directive is located. Scales approximately 1 cm. A to D images taken by Masaru Mizuyama, September 20, 2010, in the lower intertidal zone at Kamomine, Tokunoshima, Kagoshima, Japan, specimens uncollected E Colony MISE MO-100 in situ on March 16, 2011 at Tebiro Beach, Amami-oshima, Kagoshima, Japan. Image taken by Masami Obuchi.

Figure 5.Cnidae of Neozoanthus caleyi sp. n. and Neozoanthus uchina sp. n. from the tentacles, pharynx, and filaments showing their relative size. Type abbreviations: Sp=spirocysts, H=holotrichs, LH=large holotrichs, SH=small holotrichs, B=basitrichs, SH?=potential small holotrichs, pM=p-mastigophores. Size and frequency data are given in Table S1.