100 University of California Publications in Zoology [Vol. 23 



Crago spinosissima (Rathbun) 



Crangon spinosissima Rathbun, Proc. U. S. Nat. Mus., 24, 891, 1902; 

 H. A. E., 10, 130, fig. 70, 1904. 



Fig. 69. Crago spinosissima, $, X 2; a, dorsal view of carapace; b, lateral 

 view of carapace and abdomen (from Rathbun, U. S. N. M.). 



Characters. — First to fourth abdominal segments more or less carinated. 

 Anterior median spine of the carapace reaching forward to a line in front of 

 the rear line of the orbits. Rostrum narrow and acute, ascending at an angle 

 equal to that of the spine directly behind it. Hands about three times as long 

 as wide. This species differs from all allied species in having the first to third 

 abdominal segments, inclusive, armed laterally with two spines each. 



Dimensions. — Type, female: length 36 mm., length of carapace 10.5 mm. The 

 Survey specimens range between 28 and 48 mm. in length from tip of rostrum 

 to end of telson. 



Type Locality. — Off Point Arena, California, 51 fathoms ("Albatross" station 

 3351). 



Distribution. — Off Oregon and California, 15 to 96 fathoms. So far as known 

 Point Fermin is the southern limit of this species. I have seen specimens collected 

 there by the Venice Marine Biological Station, at a depth of about 15 fathoms. 



Biological Survey of Sa-n Francisco Bay. — Crago spinosissima was 

 taken at two of the outside stations : two specimens at D 5788, 60 to 

 68 fathoms, and three specimens at D 5789, 33 to 46 fathoms. The 

 bottom of both stations was "fine, green sand" ; the temperature range 

 was 9.3° to 11.4° C; and that of the salinity 33.8 to 34.3. At the 

 deeper of these stations, D 5788, at which, in fact, the greatest depth 

 recorded in the course of the survey, 68 fathoms, was attained, the 

 species in question was found associated with both C. communis and 

 C. resima, as well as C. alaskensis elongata. 



Crago lomae, sp. nov. 



Plate 12, figures 3 and 4 



Description. — Near C. spinosissima, with spines of carapace similarly placed, 

 anterior median spine equaling or exceeding rostrum in prominence, more acutely 

 pointed, and more nearly erect, at an angle of about sixty-five degrees with the 

 carapace, while the rostrum meets the carapace at an angle nearer forty-five 

 degrees; midway between anterior and posterior spine there is a small denticle 

 on the median carina; surface of the carapace is roughened with minute 



