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A REVISION OF THE GENUS SACCOGLOSSUS (ENTEROPNEUSTA) IN BRITISH WATERS
Author(s) -
BURDONJONES C.,
PATIL A. M.
Publication year - 1960
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.1469-7998.1960.tb05605.x
Subject(s) - genus , proboscis , anatomy , collar , biology , stalk , zoology , mechanical engineering , horticulture , engineering
A comparative study of topotypes of Saccoglossus ruber (Tattersall) S. serpentinus (Assheton) and S. cambrensis Brambell & Cole shows that they are conspecific, and ought henceforth all to be designated S. ruber (Tattersall). The following characteristics distinguish S. ruber from all other species of the genus:— 4 to 6 concentric rings of longitudinal fibres in the proboscis, one proboscis pore on left of stalk, proboscis 3 to 7 times the length of the collar, 45 to 95 pairs of branchial pores, 6 to 12 oesophageal pores—2 to 5 rudimentary, 5 histologically distinct regions in the collar and 3 in the oesophagus. Munsell, Ridgway and I.S.C.C.—N.S.B. colour designations for the various regions of the body have been tabulated.