Bythograea
vrijenhoeki
Juveniles or regressed adults with observations on two fixed and sectioned specimens from Bythograea vrijenhoeki collected on the American cruise PAR 5-388S, Dive 4089. On slide series 4089 Bv and series Carcino Bv (1). Worms small, 450-500 lm; found in mucous sheath on host. Ocelli not observed. Anterior proboscis chamber
pyriform, 15 lm long. Basis eosinophilic, robust, oblique section, 9 lm wide. Single stylet on basis, at least 10 lm long, with basal hub of 5 lm. Stylet to basis ratio not calculated. Two accessory stylet pouches anterolateral to stylet bulb. Anterior proboscis chamber not measured.Middle proboscis chamber 15 lm in diameter, glandular in
appearance. Posterior proboscis chamber glandular, 36-45 lm long by 17 lm wide, intensely basophilic, with weak fibrous coat. Proboscis sheath greatly reduced. Body
musculature with one layer of outer circular muscles, one layer of inner longitudinal muscles. Submuscular glands eosinophilic; elongate, slender, 10-20 lm long by 4-5 lm
wide; numerous. In section, submuscular glands as a single row around the body, not arrayed as in O. davidi; interior to muscles. Frontal glands present in esophageal region
anterior to cerebrum; eosinophilic, as a diffuse field around esophagus. Gonads undeveloped.
