72 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 25 



19. Composite falcigerous setae with 3 or 4 teeth along cutting 

 edge (PL 7, fig. 2) . . . . Exogone uniformis 



20. With black transverse bars across dorsum; larger in size 

 Odontosyllis phosphorea 



20. Without black transverse bars; smaller in size 



Odontosyllis parva 



Genus Autolytus Grube, 1850 

 Type A. prolifera (Miiller) 1788 



Autolytus varius Treadwell, 1914 



Treadwell, 1914, pp. 237-238, fig. 102. 

 Berkeley and Berkeley, 1948, p. 70, fig. 102. 



This is a small, nearly colorless species. Adult females with brood 

 sack measure to 30 mm long, consist of about 60 segments, with the body 

 divisible into an anterior region of 14, a median region of 30, and a 

 posterior region of about 16 segments. The prostomial eyes consist of a 

 pair of larger anterior and a pair of much smaller posterior ones. A. 

 varius is known from California to western Canada (Berkeley and 

 Berkeley, 1948, p. 70). 



Autolytus Pcornutus Agassiz, 1862 

 Plate 6, fig. 2 



Agassiz, 1862, pp. 390, 2 pis. 



Hartman, 1944b, p. 338, pi. 13 [45], figs. 4, 6. 



Epitoke male individuals (PI. 6, fig. 2) are occasionally taken in 

 plankton tows off southern California. There are 5 pre-epitokal segments, 

 about 24 with long swimming setae, and 1 1 posterior to the epitokal 

 region. There are no nuchal epaulettes. 



The species is more widely known from the eastern United States. 



Autolytus spp. 



Other species of Autolytus have been noted from kelp holdfasts in 

 southern California. One species has the dorsum pale, crossed by black 

 pigment bars, one on every other segment for 5 bars, followed by 6 

 double bars on successive segments; the posterior half of the body is 

 pale. The prostomium is pale and has 4 red eyes in trapezoidal arrange- 

 ment ; peristomial tentacles are long and cirriform. 



