CALIFORNIA STALK-EYED CRUSTACEA. 231 



upper portion of the cornea and the peduncle. First basal joint of the 

 antennules elongated, flattened, and armed with a spine at the antero- 

 external angle; second and third joints of subequal length; flagella 

 shorter than the peduncle. Second basal joint of the antennas longer 

 than wide, with a slender spine at the antero-external angle; third joint 

 very short; last two joints very slender, the terminal one not quite reach- 

 ing the tip of the narrow acicle. Legs short, diminishing in length pos- 

 teriorly, the first pair much longer than the others, and geniculated, the 

 terminal joint very short. Abdomen smooth above, none of the segments 

 produced into spines. Telson very narrow, the apex acuminate, the sub- 

 apical spines smooth and reaching a short way beyond the tip; dorsal 

 surface with two pairs of small spines. Inner ramus of the uropods very 

 narrow and about reaching the tip of the telson; outer ramus broader and 

 somewhat shorter than the inner, the postero-external angle acute. Preanal 

 spine in the form of a broad plate, the posterior margin of which is armed 

 with spinules. 

 Length, 18 mm. 



Numerous specimens taken in tow at Avalon, Santa 

 Catalina Island, August 13, 1893. 



This is a pelagic species and is very extensively dis- 

 tributed in the Atlantic and Pacific oceans, both north 

 and south of the equator. 



