1921 J Schmitt: The Marine Decapod Crustacea of California 97 



Dimensions. — Type, ovigerous female: length 48.3 mm., length of carapace 

 12.2 mm., of antennal scale 8.2 mm. The three specimens taken in connection 

 ■with the Survey averaged 38.5 mm. in length from tip of rostrum to end of 

 telson. 



Type Locality. — Off San Diego, California, 124 fathoms ("Albatross" station 

 2935). 



Distribution. — From off San Francisco, California, to San Domingo Point, 

 Lower California, 15 to 266 fathoms. 



Biological Survey of San Francisco Bay. — Three specimens of 

 Crago resima were taken at D 5788, associated with Crago communis, 

 C. alaskensis elongata and C. spinosissima (see C. communis, above). 



Crago abyssorum (Rathbun) 



Crangon abyssorum Eathbun, Proc. U. S. Nat. Mus., 24, 890, 1902; H. A. E., 

 10, 125, fig. 66, 1904. 



Fig. 65. Crago abyssorum, 2 ; a, antennal scale, X 2 ; b, lateral view of rostrum 

 and dorsal spines, X 2; c, dorsal view of anterior part of carapace, X 2; d, 

 chela, X 3%. 



Characters. — The fifth abdominal segment has a long, blunt carina; the sixth 

 has two prominent dorsal carinae and a low lateral carina on each side near the 

 dorsal, but extending only half the length of the segment; the telson has a median 

 furrow on its anterior fourth. Eyes very large, hemispherical, their inner faces 

 flat and contiguous; cornea covering nearly all the outer face. Second segment 

 of antennular peduncle about one and a half times as long as the third. Rostrum 

 linear, flattened above, acute, ascending at an angle of about thirty degrees with 

 the carapace, and slightly curved, a little higher than wide, the lower part laterally 

 compressed; length about one-fourth the remainder of the carapace. Hands 

 widening a little distally, their length three times the width, measured at the 

 inner base of the spine; the dactylus is more longitudinal than transverse. The 

 antennae have a slender spine at the outer base of the scale, which is narrow- 

 oblong and three-fourths as long as the carapace, rostrum excluded. 



Dimensions. — Type, female: length 61 mm., of carapace and rostrum 17 mm., 

 of carapace, exclusive of rostrum, 13.5 mm., of antennal scale 10.3 mm. 



Type Locality. — Bering Sea, southwest of Pribilof Islands, 1771 fathoms 

 ("Albatross" station 3603). 



Distribution. — Bering Sea to the southern extremity of California, 685 to 1771 

 fathoms (Rathbun). 



