NO. 1 HARTMAN: POLYCHAETOUS ANNELIDS 175 



Key to Species of NOTOCIRRUS 

 1. Prostomium lacks eyespots 



A^^. virginis Kinberg and N. chilensis Schmarda 



(From their descriptions, I am unable to separate these 2 species.) 



1. Prostomium with 4 eyespots 2 



2. Maxillae II with 3 teeth on one side and 7 or 8 on the other; 

 parapodial acicula brown A^. lorum Ehlers 



2. Maxillae II with 7 teeth on one side and 13 on the other; 

 parapodial acicula clear yellow . . N. calif or niensis, p. 175 

 Only one species, A^. calif or niensis, is present in the collections of the 



Allan Hancock Foundation. 



Notocirrus californiensis, new species 

 Plate 13, Figs. 285-290 



Collections.— 990-39 (1); 1126-40 (1); 1205-40 (3). 



The general shape is long, slender, attenuate ; length of a 60-segmented 

 piece (posteriorly incomplete) is 38 mm; its width is 0.8 to 0.9 mm. 

 The segments are simple rings, smooth, appear slightly moniliform, their 

 length about two thirds their width. Color in alcohol is brownish red. 

 The prostomium is acutely pointed, longer than wide, with 4 eyespots 

 near the posterior margin (pi. 13, fig. 287) ; the prostomium is paler 

 than the peristomium or rest of the body. The proboscis has an armature 

 resembling that of Arabella species, but the first maxillae are dentate 

 along their entire inner margin ; the other maxillary pieces are highly 

 dentate. The paired carriers are very long, slender, the unpaired piece 

 much shorter, reduced (pi. 13, fig. 286). Maxilla I has 9 teeth on the 

 right side, 7 on the left; maxilla II has 7 teeth right, 13 left; maxilla III 

 has 6 teeth right, 7 teeth left ; maxilla IV has 6 teeth on either side ; and 

 maxilla V has a single tooth on either side. The maxillary apparatus, re- 

 tracted, lies normally in setigerous segments 2 to 5. The mandibles are 

 black, proportionately large, longer than wide; the parts are fused for a 

 short distance along the median edge (pi. 13, fig. 285). Retracted, they 

 lie normally in the first and second setigers. 



The first 2 rings are apodous. Parapodia are relatively small, but 

 already from the first parapodium they have a long, digitate, postsetal 

 lobe. At the fifth setiger there are 4 broadly bilimbate setae superiorly and 

 1 2 similar setae below; between them a heavy, deep yellow aciculum pro- 

 jects for a distance nearly half that of the free length of the setae. The 

 setae in anterior parapodia are smooth (pi. 13, fig. 290) or almost so, at 



