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OBSERVATIONS ON THE ENTEROPNEUST, PROTOGLOSSUS KOEHLERI (CAULLERY & MESNIL)
Author(s) -
BURDONJONES C.
Publication year - 1956
Publication title -
proceedings of the zoological society of london
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0370-2774
DOI - 10.1111/j.1096-3642.1956.tb00459.x
Subject(s) - anatomy , operculum (bryozoa) , proboscis , biology , zoology , genus
SUMMARY1 Protoylossus Koehleri occurs in the inter‐tidal region on the Beddmanach shore of Holy Island, and in St. Martin's Bay near the Hague. 2 The habitat and associated fauna is described. 3 Distinguishing characters:–colour; shape of proboscis; operculum small; overall size and proportions of the body; gonads prominent and overlapping branchial region; fourteen to forty pairs of branchial pores; radial arrangement of proboscis musculature; proboscis diverticulum simple; proboscis skeleton simple; crura embracing about three quarters of the buccal cavity, and terminating just anterior to the operculum. Collar and trunk cavities distinct, perihaemal and peripharyngeal cavities rudimentary. Oesophageal pores absent. Hepatic gut simple with expanded lumen. Lateral gonads; genital sacs simple, ducts absent. Oocytes pink, averaging 430 μ in diameter.