. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. DECAPODS 29 CRANGON ACCLIVIS Rathbun. Crangon acdivis Rathbun, Proc. U. S. Nat. Mus., xxiv, 890, [ Fig. 68. Crangon acdivis. a. Dorsal view of carapace, t (X4). Station 294S. /». Side view (X 32)• c. Acicle. ? (X 3). d. Chela. ? (X 8). Allied to C. vmnita. Lower lateral spine of carapace farther back; anterior median spine much larger and farther forward; it projects well in front of the posterior line of the orbits. The rostrum is narrower, and ascending at an angle of about forty-five degrees. The anterior margin of th
. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. DECAPODS 29 CRANGON ACCLIVIS Rathbun. Crangon acdivis Rathbun, Proc. U. S. Nat. Mus., xxiv, 890, [ Fig. 68. Crangon acdivis. a. Dorsal view of carapace, t (X4). Station 294S. /». Side view (X 32)• c. Acicle. ? (X 3). d. Chela. ? (X 8). Allied to C. vmnita. Lower lateral spine of carapace farther back; anterior median spine much larger and farther forward; it projects well in front of the posterior line of the orbits. The rostrum is narrower, and ascending at an angle of about forty-five degrees. The anterior margin of the hand is more longi- tudinal than in C. iminita. The divisions of the ventral carina of the thorax in the male are much more spiniform in this species. Diinc7iswns.—Length of male mm., length of carapace mm., of antennal scale 3 mm. Type locality.—O^ Santa Cruz Island, Cal- ifornia, 266 fathoms {Albatross station 2948), I male. Distribution. —O'^ the Trinity Islands, Alaska, 159 fathoms {Albatross station 2853); Santa Catalina Island, Cahfornia, 80 fathoms {Albatross station 3664); southwest of San Nicholas Island, California, 158 fathoms {Albatross station 2898). One specimen taken at each locality. In the foregoing species the first four segments of the abdomen are smooth. We now come to a group also resembling C. miinita in general appearance, but having the abdomen in front of the fifth segment more or less carinated. CRANGON VARIABILIS Rathbun. Crangon variabilis Rathbun, Proc. U. S. Nat. Mus., xxiv, 890, 1902. The carapace is much like that of C. munita, but is nearly half as long as the abdomen. The rostrum is short, convex from behind forward and the tip rounded and thickened. The anten- nal scale has a concave outer margin and the spine equals or extends beyond the blade. The chelipeds are stouter; the hands vary from two and a half to three times as Fig. 69. Crangon variabilis. 9. Station 2842. a. Dorsal ^OUg aS widc. The SeC- view of carapace and a
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