3V8 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXTl. 



Basal joint of iiropods large, similar to the coxal plates of the pre- 

 ceding segments, and setose on the distal margin; rami extending 



about to the tip of the peduncle, the outer 

 one inserted at the middle of the inner mar- 

 gin of the basal plate, the inner one near the 

 base; both tipped with seta:>. 



Lengthy 3.25 mm. 



Locality. — San Diego, California, on moist 

 ground near the seashore. 



Type.— Cut. No. 39048, U.S.N.M. 



This species seems to be closely allied to 

 Actoniscus ellipticus Harger from the At- 

 lantic coast. The body is somewhat broader 

 and the lateral processes of the segments are 

 more nearly rectangular in outline, espe- 

 ciallj^ in the abdomen, and more prominent. 



PHILOSCIA RICHARDSON^ffi, new species. 



Fig. 5. — Actoniscds tdber- 



CULATUS. 



Body oblong-oval, covered with short 

 minute spinules. Head twice as wide as 

 long ; frontal margin arched ; lateral angles subacute. First thoracic 

 segment longer than the following ones, the last three segments pro- 

 duced backwards at the 

 lateral angles. Antennae 

 about one-half as long as 

 the body, the last joint of 

 the peduncle about as long 

 as the third and fourth; 

 flagellum t r i articulate, 

 nearly as long as tliP fifth 

 joint of the peduncle, the 

 first and third joints sub- 

 equal and a little longer 

 than the second; last joint 

 ending in a spine. 



Legs similar, increasing 

 gradually in length from 

 before backwards, and very 

 spiny. 



Abdomen abruptly much 

 narrower than the thorax, 

 the lateral angles of the 

 third, fourth, and fifth seg- 

 ments produced backwards ; 

 last segment over twice as broad as long, with the posterior margin 

 concave on either side of the, narrowly rounded tip. Basal joint of 



Fig. 6. — Philoscia richardson.e. 



