NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 73 



Hooded, tridentate hooks are present through the first 4 setigers. A 

 third has 3 yellow neuroacicula that terminate in a long, projecting point ; 

 they are geniculate near the point of emergence from the parapodial 

 lobe. In addition, there are 4 clearly composite, tridentate hooks, and 4 

 longer, pointed, narrowly bilimbate setae. In the hooks the lowest tooth is 

 tiny, acute. A fifth setiger is provided with composite spinigers together 

 with simple, bilimbate setae. The former occur from the fifth to fifteenth 

 setiger and thereafter are replaced by bidentate, hooded, subacicular 

 hooks, numbering 2 in a parapodium, as typical of the genus. No stout, 

 acicular hooks have been found. 



The far posterior appearance of branchiae and the nearly smooth 

 tentacular ceratophores readily distinguish this species. 



Distribution. — O. litoralis was originally described from the Gala- 

 pagos Islands, in intertidal zones; this, its second recovery, is from San 

 Nicolas Island, California, in 63-83 fms. 



Onuphis peruana, new species 

 Plate 3, Figs. 61-66 



Collections.— 395-35 (1); 835-38 (1). 



Fragments of 2 individuals from Peru do not seem to agree with any 

 known described species of this genus. The prostomium has been pulled 

 somewhat out of shape and all occipital tentacles have lost their styles. 

 The specimens are nearly pale save for some darker pigment in the inter- 

 segmental grooves. The prostomium has a pair of eyespots between the 

 bases of the inner lateral and outer lateral paired tentacles; each eyespot 

 consists of about 7 or 8 tiny dark specks in a circle; in addition, there is 

 a pair of minute eyespots anteriorly, near the dorsal base of the frontal 

 antennae. The ceratophores of the tentacles are nearly smooth, showing 

 only weak annulations, and are about 2 or 3 times as long as wide. 



The peristomial ring is about as long as the second setiger. The first 

 setiger is about % again as long; its parapodia are somewhat larger than 

 those of the second and directed forward slightly, but extend barely to 

 the posterior margin of the prostomium. Its dorsal cirrus is thicker, 

 though shorter, than that of the second parapodium, its postsetal lobe and 

 ventral cirrus both considerably shorter. Farther back dorsal and ventral 

 cirri are longer, slenderer (on the fourth right, the ventral cirrus is bi- 

 furcated near the base and the 2 parts almost equally long). Ventral cirri 

 are cirriform through 5 setigers, thereafter padlike. Dorsal cirri continue 

 large, long, and strong through a long region, even into the branchial 

 portion, and exceed the filaments of the latter in heaviness at least 



