SYSTEMATIC ACCOUNT 177 



The anterior border of the antennae has a prominent central indentation and there is a pair of eyes 

 on the prostomium. The first pair of chaetigers is never present; the second pair reach to about 

 three-quarters the length of the body. Hyaline glands may appear on the first parapodia in the dorsal 

 part of the neuropodial pinnule (Text-fig. 8), but are always present from the third foot up to the end 

 of the body; they are frequently pigmented but may be difficult to see. The chromophil glands appear 

 first on the neuropodia of the third pair of parapodia and subsequently on all feet; they are not com- 

 pact but consist of a series of ramifying tubules which are situated between the ventral and apical 

 surfaces (Text-fig. 8). A tail is never present. 



Text-fig. 8. Tomopteris septentrionalis : parapodia of specimens from (a) St. 250, (b) St. 2017. 



Discussion. The diffuse chromophil gland in T. septentrionalis might cause it to be confused with 

 both T. planktonis and T. elegans. T. planktonis however has a compact chromophil gland in the 

 adult and it is only in young specimens that any similarity between the two exists; as noted above 

 (p. 174) Monro's (1936) specimen of T. septentrionalis from St. 41 A, is T. planktonis. The presence of 

 the first pair of chaetigers in T. elegans serves to separate it from T. septentrionalis. 



General distribution. Cosmopolitan at all explored depths (see pp. 228-231). 



Tomopteris ligulata Rosa, 1908 



Original localities. Atlantic Ocean, 22 N., 35 W., 33 S., 30 W., Pacific Ocean, 31 S., 84 W. 



Tomopteris ligulata Rosa, 1908 a, p. 1. 



Tomopteris (Tomopteris) ligulata Rosa, 19086, pp. 302-4, pi. 12, figs. 18, 19. 



Tomopteris (Tomopteris) ligulata Malaquin and Carin, 191 1, pp. 15-16. 



Tomopteris ligulata Ehlers, 19 17, pp. 232-3 (in part). 



Tomopteris ligulata Malaquin and Carin, 1922, p. 22, p. 28, pp. 41-2, pi. 6, fig. 3, pi. 10, figs. 3-5. 



Tomopteris (Tomopteris) ligulata Fauvel, 1923, p. 224, fig. 84c 



Tomopteris (Tomopteris) ligulata Caroli, 1928a, pp. 4-5. 



Tomopteris (Tomopteris) ligulata Caroli, 19286, pp. 7-8, fig. 3. 



Tomopteris (Tomopteris) ligulata Caroli, 1933, p. 379. 



Tomopteris planktonis Monro, 1936, p. 121 (in part). 



Tomopteris ligulata Monro, 1939 a, p. 348. 



Tomopteris (Tomopteris) ligulata Stop-Bowitz, 1948, p. 52, fig. 38. 



