i 9 6 DISCOVERY REPORTS 



body. In some specimens these are very distended and may contain sexual products. Simple chaetae and 



aciculae appear on the fifth parapodia. Two small elliptical anal papillae terminate the body posteriorly. 



Discussion. I have re-examined the following specimens from Hardy and Gunther (1935, p. 116), 

 Sagitella cornuta from Sts. WS 26, WS 30, WS 70, and Typhloscolex sp., from Sts. 137, WS 38 and 

 WS 63, and consider them to be T. mulleri. Unfortunately all the material reported by Hardy and 

 Gunther is not available for examination. 



T. mulleri is closely related to T. phyllodes Reibisch, 1895 and T. leuckarti Reibisch, 1895 and all 

 three have been reported from the same areas in the South Atlantic. T. phyllodes differs from T. 

 mulleri in having ciliated epaulettes smaller than the body width, whereas in T. leuckarti the same 

 organs are greater than the body width. Reibisch did not give measurements for the width of his 

 specimens, but it is clear from his drawings that in both T. phyllodes and T. leuckarti the greatest width 

 is about half the length. His drawings of T. mulleri show specimens about seven times as long as wide. 

 In the material I have examined there are specimens from the same stations and depths covering these 

 size ranges, yet in all of them the ciliated epaulettes are neither smaller nor larger than the body width. 



In some of the widest of my specimens (possibly corresponding to T. phyllodes and T. leuckarti of 

 Reibisch) sexual products are present in the cirri. I suggest, therefore, that phyllodes and leuckarti may 

 represent the sexually maturing members of the population, and further that Reibisch's two species may 

 be shown, when observations on the living animal have been made, to be synonymous with T. mulleri. 



General distribution. T. mulleri is cosmopolitan and has been widely reported from the Atlantic 

 (see pp. 231-236). 



Genus Travisiopsis Levinsen, 1885 



Body cylindrical or spindle-shaped, prostomium with nuchal organs flanking a caruncle but without 

 ciliated epaulettes. Otherwise similar to Typhloscolex except that it is much larger in the adult. 



Type species. Travisiopsis lobifera Levinsen, 1885. 



Type locality. 42 50' N., 46 10' W. 



Travisiopsis lobifera Levinsen, 1885 



Travisiopsis lobifera Levinsen, 1885, pp. 336-40, figs. 17-20. 



Travisiopsis lobifera Reibisch, 1895, p. 57. 



Travisiopsis lobifera Southern, 191 1, p. 31, pi. 1, fig. 4. 



Travisiopsis lobifera Fauvel, 1916, pp. 73-4. 



Travisiopsis lobifera Fauvel, 1923, p. 229, fig. 86a-d. 



Sagitella kowalewskii Benham, 1929, p. 191 nee Sagitella kowalewskii Benham, 1927, pp. 80-1, pi. 2, figs. 33-4 



(see Travisiopsis levinseni). 

 Travisiopsis lobifera Fauvel, 1932 a, p. 19. 

 Travisiopsis lobifera Fauvel, 19326, pp. 66-7. 

 Travisiopsis lobifera Stop-Bowitz, 1948, pp. 57-8, fig. 44. 

 Travisiopsis lobifera Friedrich, 1950a, pp. 315-19. 

 Travisiopsis lobifera Stop-Bowitz, 1951, p. 10. 



Description. This cylindrical-shaped species may measure up to 25 mm. long by 4-6 mm. wide for 

 a constant twenty-one segments. The median dorsal caruncle, situated between the peristomium and 

 the first parapodia, is characteristically oval and wholly attached (Text-fig. 13 a). Paired nuchal lobes 

 surround the caruncle in the form of fixed processes anteriorly and laterally, with free projecting 

 lobes posteriorly which reach as far as the single cirri of the second parapodia. The single cirri of the 

 peristomium and the first two feet are circular, thereafter the parapodial cirri are heart-shaped. A 

 group of the three acicular chaetae project from between the parapodial cirri from the sixth to seventh 

 segment backwards. Anal cirri are variable in form from elongate oval to rectangular. 



