DECAPODS 95 
segment of the antennular peduncle.. The outer maxillipeds reach a little 
beyond the middle of the antennal scale; the first pair of feet to the end 
of the antennal peduncle; the second pair midway between the maxilli- 
peds and the tip of the scale; the fifth pair to the end of the maxillipeds, 
The third segment of the abdomen seen in profile is evenly rounded ; 
it is laterally slightly compressed; fourth segment without spines; the 
sixth is less than twice as long as the fifth, and also shorter than the 
seventh, which has 4 or 5 spines on either side. 
Male.—Smaller and more slender. Rostrum longer, sometimes ex- 
ceeding the scale a trifle, curving upward in terminal half, armed with 5 
to 7 teeth above, 5 to 9 below. The pterygostomian spine may be 
obsolete. The thickened portion of the outer flagellum extends to the 
terminal fifth of the antennal scale. 
Dimensions. — é, approximate length 50 mm., length of carapace and 
rostrum 18.5 mm., of rostrum 10.2mm. @, approximate length 34 mm., 
of carapace and rostrum 16 mm., of rostrum 9.5 mm. 
Distribution.—From Arctic Alaska southward to Kamchatka and 
Aleutian Islands, and eastward to Port Etches. 
Taken by Dr. Dall in small numbers at Cape Lisburne, 5—7 fathoms ; 
Cape Etolin, Nunivak, 8 fathoms; Hagemeister Strait, 8-15 fathoms; 
Chichagof Harbor, Attu, 5~7 fathoms; Kiska Harbor, g-12 fathoms; 
Constantine Harbor, Amchitka, 6-10 fathoms; Bay of Islands, Adak, 
9-16 fathoms; off station reef, Iliuliuk Harbor, Unalaska, 3 fathoms; 
Belkofski Bay, 15-25 fathoms; Anchorage, Big Koniuji Island, Shu- 
magins, 6-20 fathoms; Shahafka Cove, Kadiak; Chugachik Bay, 
Cook Inlet, 20-60 fathoms; Port Etches, 5-8 fathoms. 
Bristol Bay, 1434 fathoms (A/éarross station 3236). 
Kadiak, 5 fathoms (Harriman Expedition, W. R. Coe). 
Bering Island (L. Stejneger). 
Bering Island, in stomach of Gadus macrocephalus (N. Grebnitzky). 
Rakovaya Bay, Avacha Bay, Kamchatka (L. Stejneger). 
Solovarennaja Bay, Petropavlovsk, Kamchatka, 10-12 fathoms, alge 
(N. Grebnitzky). 
SPIRONTOCARIS KINCAIDI Rathbun. 
Spirontocaris kincaidi RATHBUN, Proc. U.S. Nat. Mus., XxXIv, 899, 1902. 
Near S. camtschatica. 
Female.—Carapace short in relation to the abdomen. Rostrum one 
third longer than the carapace, not reaching tip of antennal scale, 
slightly concave above, horizontal, armed above with 5 (occasionally 6) 
teeth, two of which are on the carapace, the anterior tooth a little before 
the middle of the rostrum; tip acute; lower limb, as in all the gaimardiz 
