OPHELIIDAE i6s 



Travisia kerguelensis, Mcintosh. 



Mcintosh, 1885, p. 357, pi. xliii, fig. 10; pi. xxviA, figs. 1-2. 



Ehlers, 1897, p. 97, pi. vi, figs. 159-161. 



Benham, 1927, p. 123. 



Monro, 1930, p. 165, fig. 67 a-c. 



Occurrence. WS 766 (i); WS 782 (i). 



Specific characters. Between 23 and 27 segments, of which lo-ii are involved in 

 the hinder region. The terminal segments are more or less laciniated or papillated. The 

 anal cylinder comes off rather abruptly from the body. 



Genus Ammotrypane, Rathke 



Body not divided into distinct regions. A deep ventral and two lateral grooves 

 throughout the entire length. There are a small conical prostomium, eyes beneath the 

 skin, and paired evaginable nuchal organs. Segments superficially annulated. Cirri- 

 form branchiae present on all chaetigers except the ist, and a few terminal segments. 

 The feet have small parapodial lobes and two bundles of simple, capillary bristles. There 

 is an anal cylinder which usually carries papillae. 



Thirty-nine chaetigers and a pair of anal appendages ... A. scaphigera 



Twenty-eight chaetigers and no anal appendage ... ... ... ... ...A. breviata 



Ammotrypane scaphigera, Ehlers. 

 Ehlers, 1901, p. 172, pi. xxii, figs. 1-4. 



Occurrence. St. WS 213 (i). 



Specific characters. There are 39 chaetigers and all are branchiate except the first 

 one and the last six. The body ends in a scoop-shaped anal segment with the concavity 

 ventral, at the base of which is a pair of cirriform processes. Ehlers characterizes them 

 as anal branchiae. 



The present specimen measures 20 mm. by i mm. and is in rather poor condition. 

 It agrees with Ehlers's description in the number of chaetigers and the possession of a 

 pair of anal appendages, but the anal segment is too much damaged for comparison. 



Ammotrypane breviata, Ehlers. 



Ehlers, 1913, p. 523, pi. xxxix, figs. 1-7. 



Occurrence. St. 167 (numerous); WS 215 (3); WS 782 (5). 



Specific characters. The larger specimens from St. 167 measure about 34 mm. by 

 2 mm. for 28 chaetigers and have gills on every segment except the first one and the last 

 four modified chaetigers. The anal cylinder is very faintly and irregularly ringed and its 

 dorsal peak is more prominent than the ventral. 



The specimens from St. WS 215 and St. WS 782 are about half the size of the others 

 and all are in poor condition. They have 26 chaetigers instead of 28 and gills on all 

 except the ist and the last three modified chaetigers. Otherwise they are not separable 

 from the larger forms. Better material might, however, reveal differences. 



14-2 



