892 PROCEEDINGS OF THE NATIONAL MUSEUM. 
VOL. XXIV. 
NECTOCRANGON DENTATA. 
Differs from N. lar (Owen), with which it has been confused, in the 
carinse of the sixth abdominal somite ending in a small sharp tooth or 
spine, and the more elongate hand, which is about five or more than 
five times as long as its width across the palm. 
Dimensions. — ^Female, length of body 73 mm., of carapace 19 mm., 
of hand 10 mm., width of palm 2.1 mm. 
Type locality. — Off Sitkalidak Island, Alaska, 69 fathoms, station 
2855,' U. S. Fish Commission steamer Albatross (Cat. No. 25253). 
Distribution. — From Bering Sea eastward to Sitka and westward 
to Kamchatka, 6 to 96 fathoms. 
NECTOCRANGON OVIFER. 
A deep-water species, also closel}" related to JV. lar. Median crest 
of carapace higher, spines more ascending, anterior marginal spines 
above the eyes longer and more deeply separated, eyes larger, abdomen 
shorter, median carina higher, carina? of sixth somite terminating in a 
small spine or tooth. Eggs larger than in JV. lar or JV. dentata. 
Dlinensloiis. — Female with eggs, length 60 mm., length of carapace 
17.4 mm. 
Type locality. — Off the Trinity Islands, Alaska, 159 fathoms, station 
2853, U. S. Fish Commission steamer Albatross (Cat. No. 25254). 
Distribution.— Found in Bering Sea and along the Alaska Peninsula, 
56 to 368 fathoms. 
NECTOCRANGON CALIFORNIENSIS. 
Allied to JV. omfer. Eyes smaller, spine of antennal scale project- 
ing not so far beyond the blade, hands having the digital spine situated 
nearer the wrist, and the distal margin in consequence more longitu- 
dinal; above all, the first and second abdominal somites are noncarinate, 
and the carina of the third and fourth somites is rather feebly devel- 
oped. 
Dimensions. — Male, length of bod}^ 31 mm., of carapace 8.6 nmi. 
Tyjpe locality. — Off' Santa Catalina Island, California, 80 fathoms, 
station 3664, U. S. Fish Commission ^i/d^im^r- Albatross (Cat. No. 
25255). 
NECTOCRANGON LEVIOR. 
Allied to N. crassa Rathbun, but has the first four abdominal somites 
noncarinate, except for a tubercle on the first, and the carinte of the 
fifth and sixth somites less clearly marked than in that species. The 
pleura of all the somites have shallow depressions. 
Dlme7islons. — Female, length 47.7 mm,, length of carapace 13.1 mm. 
