Pacific Coast of North America. 



165 



Fig. 3. 



its extremity, the lateral angles being produced in a short 

 triangular process, between which 

 the posterior margin is distinctly 

 denticulate and bears four spines, 

 which are about twice as long as 

 the lateral teeth. The uropoda 

 are shorty not reaching the extre- 

 mity of the terminal segment, 

 are truncate and crenulate on 

 their posterior margins. The 

 uropoda, as well as the terminal 

 segment, are fringed with short 

 hairs. . .. 



Thp 1po-« a,-P Innp- nnd slender ^«''^^«^« caudata. Last two 



ine legs aie long ana sienaei abdominal segments, greatly 

 and armed with many spines. enlar'>-ed. 



Colour light brown marked 

 with black spots. 



Individuals of this species were collected at Isthmus Cove, 

 Catalina Island, California, by tiie U.S. Fish Commission 

 steamer ' Albatross.' 



Type. No. 22565, U.S. N. M. 



This species resembles E. Grimaldii, Dollfus *, more closely 

 than it does any other species of the genus. It differs in the 

 following characters : — 



1. The greater number of joints in the flagellum of the 

 first pair of antennai. In our species there are five joints, 

 while in E. QrimaJdii the flagellum is uniarticulate. 



2. In the fewer number of joints in the flagellum of the 

 second pair of antennae. In our species there are only 

 twenty-tive, while in E. Orimaldii the flagellum contains 

 thirty-two articles. 



'6. In the presence of four spines on the posterior margin 

 of the terminal segment. In E. Grimaldii the posterior 

 margin is denticulate ; in our species it is denticulate and 

 also bears four spines. 



Family IV. Corallanidae. 

 5. COEALLANA, Dana. 



7. Corallana truncata^ sp. n. 



Body elongate, about three and a half times longer than 

 wide ; colour yellow. 



* Bull. Soc. Zool. France, xiii. 1888, pp. 35, 36 ; " Sur quelquea 

 Crustac^s Isopodes du Littoral des Afores," A. Dollfus. 



