74 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 25 



Parapodia are lateral throughout and provided with setae and acicula 

 that are remarkably uniform. The superiormost seta is a simple, distally 

 curved spinelike one with terminal serrations (PI. 7, fig. 3). This is 

 followed by a long, spinigerous composite seta (PI. 7, fig. 4) and by 

 3 equally short composite falcigerous setae (PI. 7, fig. 2). The com- 

 posite spiniger has an appendage that is delicately toothed along the 

 cutting edge and the end of the shaft is thick, rounded so that the 

 appendage is seldom seen in lateral view ; typically it is seen only from 

 its narrow edge, resulting in a view that gives the appendage the ap- 

 pearance of a long tailed whip. Composite falcigers have a similar thick 

 shaft but the appendage is less flexible and has 3 or 4 slender teeth along 

 the concave cutting edge. These parts can be positively identified only by 

 special, oil immersion preparations; they have been checked and found 

 remarkably uniform from one parapodium to another, and between 

 specimens. 



E. uniformis shows resemblance to E. lourei Berkeley and Berkeley 

 (1938, p. 44) first described from western Canada. The latter is larger, 

 measuring to 8, instead of 4 mm long. Falcigerous setae differ in that 

 the cutting edge has numerous teeth. E. uniformis has been found very 

 abundantly present in shallow benthic samples in southern California. 

 It is usually associated with other members of the subfamily, notably 

 species of Sphaerosyllis. 



The specific name refers to the uniform character of its setal com- 

 ponents. 



Genus Exogonella, new genus 

 Type E. brunnea, new species 



This genus is distinguished from other members of the subfamily 

 EXOGONINAE in that the prostomium and peristomium lack anten- 

 nae and cirri. The palpi are completely fused and resemble the prosto- 

 mium of the eunicid genus Nematonereis. The pharynx terminates in 

 a sharp, slender yellow tooth located anteriorly. Parapodia are provided 

 with composite falcigerous setae and simple acicular setae. A single 

 species is named. 



Exogonella brunnea, new species 

 Plate 8, figs. 1-5 



The type was selected from Velero IV Sta. 5102; other individuals 

 come from shallow shelf stations of southern California. 



This is a small species and resembles a nematode; the body is very 



