56 



BULLETIN 129^ UNITED STATES NATIONAL MUSEUM 



pus and propodus are equal, nearly two-thirds as long as merus and 

 two and a half times as long as dactylus. (See Measurements.) 



The sternum is deeply grooved between segments, the tubercles 

 in line with base of chelipeds are very large and flattened antero- 

 posteriorly. 



Measurements. — Male, holotype, length of carapace 23.8, length of 

 rostrum 9, width of carapace 12.7 mm. The legs are nearly all 

 detached and those measured belong to four different males: 



Range. — Santa Barbara Islands, California; northern extremity of 

 Mexico. Depth, 38 to 50 fathoms. 



Material examined. — See table, page 55. 



PODOCHELA LATIMANUS (Rathbun) 



Plate 21 



Ericerus latimanus Rathbun, Proc. U. S. Nat. Mus., vol. 16, 1893, p. 224 

 (type-locality, Gulf of California, 11 fathoms, station 3024, Albatross; 

 holotype, Cat. No. 17324, U.S.N.M.). 



Diagnosis. — Rostrum a long spine nearly equaling postrostral 

 length of carapace. A postorbital tubercle present. Sternum almost 

 smooth. Chelipeds dilated. 



Description. — Male: Cardiac region elevated, conical; branchial 

 regions swollen, a tubercle on their antero-lateral margin; gastric 

 region with two median tubercles, the anterior the smaller; hepatic 

 region not prominent, bearing a marginal tubercle; pterygostomian 

 ridge with a tubercle; postorbital tubercle small, midway between 

 orbit and buccal cavity. Rostrum a triangulate, acuminate spine 

 nearly as long as the remainder of the carapace, posteriorly hollow 

 beneath, anteriorly upturned. Orbital arch thickened. Basal anten- 

 nal article partially visible from above, a tooth at its antero-external 

 angle, from which a convex ridge extends backward and inward; 

 fiagellum visible at sides of rostrum. Surface of maxillipeds spinulous. 



Inner surface of chelipeds spinulous; outer margin of merus irregu- 

 larly lobed; a spine at distal end above and on inner side; carpus 

 with a stout external, and also anterior, spine. Palm dilated, fingers 

 gaping; in the gape there is a truncate and a spiniform tooth on the 

 dactyl and a triangular tooth on the immovable finger. First pair 

 of ambulatory legs about one and two-thirds, second pair one and 

 one-third, times tlie total length of the carapace; fourth pair not so 



