NO. 2 HARTMAN : POLYCHAETOUS ANNELIDS 275 



Tentacles are numerous, coiled. The dorsum of the first 12 seti'gers is 

 finely, transversely rugose. Large eggs, visible on the dorsal side through 

 the body wall, are present from the fifteenth setiger. Nephridia may be 

 seen as a thick swelling on dorsal sides of parapodia, one to each para- 

 podium, from the second setiger. 



Ventral scutes are large, broad, thick, on setigers 5 to 8, but up to 

 the thirteenth they are still more or less conspicuous though much 

 smaller; thereafter they are depressed (preserved). 



Thoracic setae are of 2 kinds, including longer and shorter ones, both 

 with pectinate ends and swollen, spinous, subdistal parts, but with very 

 narrow, obscure wings below. The longer ones (pi. 22, fig. 34) number 

 about 3 in a parapodium and alternate with the shorter ones (pi. 22, fig. 

 33) which number about 6 to 10 in a fascicle. Uncini of thorax and 

 abdomen resemble one another; they are avicular, with large basal tooth 

 (pi. 22, fig. 36) and many rows of tiny teeth in series above (pi. 22, fig. 

 35) forming a thick hook that does not readily lie flat. 



S. oculata differs from S. pacifica, the only known species in the genus, 

 in having numerous peristomial eyespots. Thoracic setigers number 40 

 or more as against 23, and thoracic setae have a broader flaring portion 

 distally than in the first described species. 



Holotype. — AHF no. 66. 



Type locality. — Tomales Point, California, in rocky habitats; inter- 

 tidal. 



Distribution. — Central California. 



Subfamily Thelepinae 



Thelepus crispus Johnson 



Johnson, 1901, p. 428, pi. 17, figs. 175-178; Berkeley, 1942, p. 204. 



At Tomales Bay, Dillon Beach, and Tomales Point, ocean side, this 

 is the commonest terebellid. In life it is orange yellow, with bright red, 

 filamentous branchiae. It occupies coarse, sand-covered, chitinized tubes, 

 on under sides of shell fragments and stones. It often harbors a commensal 

 polynoid, Halosydna brevisetosa (see above). Length is 70 to 120 mm. 



Subfamily Polycirrinae 



Genus POLYGIRRUS Grube 

 Polycirrus, sp. 



Representatives are to be found in rocky habitats of Tomales Point 

 and Dillon Beach. They are typically small, delicate, fragile; they are 

 usually bright red, very active in life, without tube or burrow. The 

 anterior end consists of a large, long, shovellike prostomium with enor- 



