128 PROCEEDINGS OF THE NATIONAL, MUSEUM vol. loi 



three articles, the second of which is the longest. Distal third of 

 inner margin of second palp article with two long denticulate setae 

 between which is an oblique row of three similar but smaller setae. 

 Left mandible similar to right except that it lacks a lacina and bears 

 11 setae in setal row. 



First peraeopod. — Propodus with a row of about 9 subequal ser- 

 rations on proximal third of inferior margin. Carpus expanded, 

 bearing 15 2-pointed setae along inferior margin. 



Other peraeopods. — In general structure similar to first peraeopods 

 except that the carpal segment is not expanded. 



Uropods. — Not exceeding pleotelson length; each composed of a 

 peduncle and two branches. Peduncular segment widest at distal end, 

 branches subequal in length. In allotype the peduncular segment is 

 about as long as inner branch and is more setose than that figured for 

 holotype. 



Pleopods. — First male pleopods with lateral distal angles acute, 

 distal margins very slightly irregular save for the setiferous elevations 

 that characterize species of this genus. Second male pleopod with 

 outer branch somewhat rectangular, having a truncate, setiferous dis- 

 tal margin ; inner branches with a curved, stylif orm proximal branch 

 extending beyond the tip of outer branch and located midway between 

 distal and proximal margins and a short thick distal branch articulat- 

 ing slightly proximal to the mediodistal angle of outer plate. Third 

 male pleopod with a narrow 2- jointed exopodite, distal joint bearing 

 six plumose setae ; endopodite roughly rectangular, with three plumose 

 setae on distal margin. Fourth male pleopod with fleshy single- 

 jointed branches that lack setae. 



Types. — Holotype, allotype, and 1 male and 5 female (1 ovigerous) 

 paratypes collected at the type locality, Carmel Cove, Monterey 

 County, Calif., July 6, 1947, by John Davis; specimens found on 

 undersurface of submerged rock in zone 4 of the intertidal.^ Type 

 material deposited as follows : 



United States National Museum, holotype, No. 87479 ; allotype, No. 

 87480; 1 male and 2 female paratypes. No. 87481. Allan Hancock 

 Foundation, 1 female paratype. Pacific Marine Station, 2 female 

 paratypes, accession No. 1218 Arth. 



JANIRALATA RAJATA, new species 



FiGUKEs 21, 22 



Holotype. — Male, length 4.0 mm., width at widest part of second 

 peraeon somite 1.0 mm. 



Diagnosis. — Cephalon with an exceedingly short, evenly rounded 



' Specimens donated to writer by Dr. Frank A. Pitelka, Zoology Department, University 

 of California. 



