. Alaska ... Natural history; Scientific expeditions. 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 III, fig. 2. Sclerocrangon alata Rathbun, Proc. U. S. Nat. Mas., xxiv, 891, 1902. Allied to S. boreas. Carapace only slightly broader than long; surface very uneven, sculptured and pitted. Median carina armed with a small spine just behind the orbits, a still smaller one at the middle of the carapace, and a tubercle near the posterior mar- gin. Rostrum with an acute Fig.
. Alaska ... Natural history; Scientific expeditions. 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 III, fig. 2. Sclerocrangon alata Rathbun, Proc. U. S. Nat. Mas., xxiv, 891, 1902. Allied to S. boreas. Carapace only slightly broader than long; surface very uneven, sculptured and pitted. Median carina armed with a small spine just behind the orbits, a still smaller one at the middle of the carapace, and a tubercle near the posterior mar- gin. Rostrum with an acute Fig. 72. Sclerocrangon alata. 9 (X a). Station 2865. a. Dorsal view of " carapace and abdomen, b. Side view of carapace. CUrVCd tip. A spine at the outer angle of the orbit. Anterolateral angles broadly alate. Branchial carina having a strong anterior spine; posterior half protuberant and deeply pitted, as is also the surface below the crest. The spine of the antennal scale extends as far as or a little farther than the blade. The first pair of feet have a strong upper distal spine on the merus, a large outer dentiform expansion on the carpus, and a very short stout hand less than twice as long as broad, ay the anterior margin nearly transverse and the spine nearly longitudinal. The abdomen is sculptured. The median carina of the first five segments is very crangon'aiata. ° -^ (X 3b)- Station 2865. blunt, and on the third segment especially prominent. ''• Acicie. b. cheia. The pleura are without spines. The lateral spinules (one or two pairs) on the telson are situated at about its middle. Dimensions. — Male, length 38 mm., length of carapace 11 mm., width of carapace at branchial spine mm., length of hand mm., width of hand mm. A female mm. long is laden with ova. Distribution. — From Bering Sea to Puget Sound, 6-91 fathoms. Usually not more than one or two specimens in a haul. Taken at the following localities by the Albatross:. Fig. Please note
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
