NO. 2 HARTMAN : POLYCHAETOUS ANNELIDS 249 



Odontosyllis parva Berkeley 



Berkeley, 1923, p. 6, figs. 1, 2. 



At Tomales Point, ocean side, it is found among sponge and Biyozoa 

 masses, and crawling over mussels; at Dillon Beach it has been taken 

 from algae; others come from Moss Beach, San Mateo County, south 

 to Pacific Grove. Epitokous males and females, and gravid atokous 

 females are included. Color in life is bright red. Length is 10 to 14 mm. 



The prostomium is broad, short, anteriorly truncate, as originally 

 shown. Palpi are entirely ventral in position, free from each other, short, 

 subglobular. In epitokous male individuals the 4 eyes are very dark, 

 large, the 2 of a side fused with each other; in epitokous females and 

 atokous individuals the eyes are pale red, smaller. The 3 prostomial 

 antennae are short, cylindrical, the median one about a third again as 

 long as the lateral ones. The nuchal hood is weakly trilobed and covers the 

 prostomium less completely than originally shown. Ventral cirri are 

 longer, foliaceous though equitriangular, not thick, blunt, as first shown. 



Specialized natatory setae are first present from the nineteenth setiger 

 in male epitokes and from about the twenty-first in female epitokes. I 

 believe the original description was based perhaps on an early epitokous 

 male individual, since the 4 eyes are shown already large, dark, and the 

 dorsal fascicle of natatoiy setae are shown just beginning to emerge from 

 the parapodial lobes. 



TrypanosylHs adamanteus Treadwell 



Treadwell, 1914, pp. 235, 237, figs. 1-3. 



This comes from Second Sled Road, Dillon Beach, among algae and 

 from barnacle clumps. The dorsum is marked with pale diamond-shaped 

 patches, surrounded by dark pigment, segmentally arranged. Length is 

 30 to 45 mm. 



TrypanosylHs gemmipara Johnson 



Johnson, 1901, pp. 405-406, pi. 7, figs. 72-76; 1902, pp. 302-315, figs. 

 7-17. 

 At Tomales Point, ocean side, this occurs among Bryozoa, sponge 

 and Clavelina masses. In life it is broad, depressed ; it is pale, the seg- 

 ments crossed, dorsally, by conspicuous, transverse red lines, and the 

 dorsal cirri are tinged with a similar pigment. Length is 40 to 55 mm. 



Haplosyllis spongicola (Grube) 



Fauvel, 1923, pp. 257-258, fig. 95. 



At Tomales Point, ocean side, it occurs among sponge and Bryozoa 

 clumps. Length is 40 to 60 mm. 



