166 University of California Publications in Zoology [Vol. 23 



Characters. — Abdomen unarmed. Rostrum long, slender, spine-like, laterally 

 compressed, unarmed, moderately serrate above and slightly so below. The 

 straight, slender supraocular spines do not reach quite to the ends of the eyes 

 and are united to the rostrum for nearly one-half their length. The marginal 

 spines of the carapace vary from eight to ten on a side; there are six spines on 

 the gastric area, four in a line in the usual place behind the supraocular spines, 

 and one on each side near the hepatic region; the terminal spines of the line are 

 very weak and small ; but one spine occupies the anterior branchial region ; 

 posterior margin unarmed. Chelipeds well set with spines and spinules, not hairy. 



Dimensions. — Type, length 35 mm. 



Type Locality. — Off Cape Beale, Vancouver Island, British Columbia, 66 

 fathoms ("Albatross" station 2878). 



Distribution. — From Sitka, Alaska, to Los Coronados Islands, Lower California, 

 50 to 638 fathoms. 



Remarks. — Probably the species designated by Owen as M. gregaria (Rath- 

 bun). 



Munida hispida Benedict 

 Plate 31, figure 3 



Munida hispida Benedict, Proe. TJ. S. Nat. Mus., 26, 260, fig. 10, 1902. 



Characters. — Second, third, and fourth segments of abdomen armed; second 

 and third with two rows of spines, fourth with one; second of the double rows 

 wanting in all but the largest specimens. Rostrum more than twice as long as 

 supraocular spines, slightly sigmoid and minutely serrate. Supraocular spines 

 little longer than the eyes, stout at base, and tapering rapidly to a sharp point. 

 Marginal spines of carapace, not counting those at anterolateral angles, from 

 seven to ten on a side; gastric spines small, with a much smaller pair placed 

 anteriorly and closer together; on median line of gastric region there are five 

 or six spines, and on a ridge behind these is a row of spinules ; a number of 

 spinules are scattered over the anterior portion and the sides of this area; there 

 are about sixteen spinules on the triangular area, a spine on the branchial area 

 just behind the apex of the triangle, and another paired spine behind this; 

 posterior border of carapace armed with from ten to about eighteen low spines. 

 Chelipeds stout, prismatic, and spinose; not hairy. 



Dimensions. — Type, male: length from extremities of the rostrum and telson 

 83 mm., length of right cheliped 186 mm., merus 70 mm., palm 53 mm., fingers 

 30 mm. Specimen from off Santa Catalina Island (plate 31, figure 3) : length of 

 carapace and rostrum 20 mm., of right cheliped 36 mm. 



Type Locality. — Off Galapagos Islands, 271 fathoms ("Albatross" station 

 2817). 



Distribution. — Also taken off Santa Catalina Island, 178 to 195 fathoms 

 ("Albatross" station 4410); off La Jolla, California, 158 fathoms (Scripps 

 Institution, haul 1157) ; and northwest of Cerros Island, Lower California, 171 

 fathoms ("Albatross" station 2987). 



Remarks. — The variation between the large specimen taken for the type and 

 the smaller specimens is considerable. The carapace of the smaller ones lack many 

 of the spinules, and the spines are larger; the fourth segment of the abdomen may 

 show only two small protuberances in place of the row of spines. The chelipeds 

 are much shorter, and they are armed with definite rows of spines ; the palm is 

 .prismatic, and the prehensile edges of the fingers are in contact throughout. The 

 rostrum in some of the smallest is slightly bent upward. With all this variation, 

 however, the specimens intergrade, and in my opinion give no ground for separa- 

 tion (Benedict). 



