Harriman Alaska series . pero-lateral spine. Pleura of theabdominal segments with only one spine each. Telson sulcate; two pairsof lateral spinules on the terminal half. Dimensions. — Male (Alaska), length no mm., length of carapace 32mm., width of carapace at branchial spine mm., length of mm., width of hand at inner base of spine 6 mm. Harriman Expedition,—Kadiak, 5 fathoms (W. R. Coe); Berg Bay,Glacier Bay. Distribution.— Arctic Europe and America; Atlantic coast of Americasouthward to Cape Cod; Alaska (as far south as Killisnoo); California(Ross, Owen); Siberia; Kamchatka (Ro
Harriman Alaska series . pero-lateral spine. Pleura of theabdominal segments with only one spine each. Telson sulcate; two pairsof lateral spinules on the terminal half. Dimensions. — Male (Alaska), length no mm., length of carapace 32mm., width of carapace at branchial spine mm., length of mm., width of hand at inner base of spine 6 mm. Harriman Expedition,—Kadiak, 5 fathoms (W. R. Coe); Berg Bay,Glacier Bay. Distribution.— Arctic Europe and America; Atlantic coast of Americasouthward to Cape Cod; Alaska (as far south as Killisnoo); California(Ross, Owen); Siberia; Kamchatka (Ross). Depth, 1-44 fathoms. Numerous specimens were taken by the Albatross in Bristol Bay andvicinity in 3^-17 fathoms; by the U. S. R. S. Corwin in lat. 66° 12oo N., long. 168° 54 oo W., 30 fathoms, lat. 65° 49 15 N., 04 30 W., 26 fathoms, and lat. 71° 02 oo N., long. 157° 46oo W., 19 fathoms. Killisnoo, Alaska (Northwestern Trading Company).Plover Bay, Siberia, 10-25 fathoms (W. H. Dall). 134 RATHBUN. Cape Etolin, Nunivak Island, 8 fathoms (W. H. Dall).Various localities in the Aleutians and Alaska Peninsula, 6-28 fathoms(W. H. Dall). SCLEROCRANGON ALATA Rathbun. Plate in, fig. alata RATHBUN, Proc. U. S. Nat. Mus., xxiv, 891, 1902. Allied to S. boreas. Carapace only slightly broader than long; surfacevery uneven, sculptured and pitted. Median carina armed with a small spine just behindthe orbits, a stillsmaller one atthe middle of thecarapace, and atubercle near theposterior mar-gin. Rostrumwith an acute FIG. 72. Sclerocrangon alata. 9 (X 2)- Station 2865. a. Dorsal view of * carapace and abdomen, b. Side view of carapace. Curved tip. A spine at the outer angle of the orbit. Antero-lateral angles broadlyalate. Branchial carina having a strong anterior spine; posterior halfprotuberant and deeply pitted, as is also the surface below the spine of the antennal scale extends as far as or a little farther thanthe blade. The first pair of
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