N0.1272. NEW DECAPOD CRUSTACEANS— RATHBUN. 901 
TypL'hjcaUtij. — Off Santa Cruz Island, California, 155 fathoms, sta- 
tion 2949 (Cat. No. 25277). 
Distribution. — From Unalaska to southern California, 35 to 178 
fathoms. 
PANDALUS MONTAGUI TRIDENS. 
Difl^ers from P. utontcu/ui Leach of the North Atlantic in its some- 
what longer rostrum, which varies from li to If times leng-thof cara- 
pace, the dorsal spines terminate behind the middle of the rostrum 
and the tip is usuall}* trifid, while in typical P. montagxd the rostrum 
is from If to 1^ times the carapace, its dorsal spines reach to or in 
front of the middle, and the tip is bitid. 
Dimensions. — Female, length 104 mm., length of carapace and ros- 
trum 48.0 mm., of rostrum 30.2 jnm. 
Type locality. — Off' North Head, Akutan Island. Alaska, 72 fathoms, 
station 2842, U. S. Fish Commission steamer Alhatross (Cat. No. 25278). 
Distribution. — From Bering Sea to Point Arena, California, 3 to 
351 fathoms, abundant, 
PANDALUS STENOLEPIS. 
Near P. danse, Stimpson. Differs in the stouter eyes, the transverse 
diameter as great as axial diameter; in the more slender acicle, which 
has a concave outer margin, and distal half of blade ver}' narrow and 
liliform, narrower than adjacent thickened portion; in the longer feet 
of first pair, reaching almost to extremit}" of maxillipeds; in the third, 
fourth, and fffth pairs of feet of the male, which, while shorter than 
those of the female, as in P. dan»., do not, as in that species, differ in 
shape from those of the female: in the tip of the rostrum, usually two- 
spined instead of three-spined. 
Dimensions. — Adult female, length 80 mm., length of carapace and 
rostrum 37.2 mm., of rostrum 21 mm. 
TyjM locality. — Straits of Fuca, 40 fathoms, station 3464, U. S. Fish 
Commission steamer Alhatross (Cat. No. 25279). 
Distrihution. — From Aleutian Islands to Oregon, 27 to 125 fathoms. 
PANDALOPSIS ALEUTICA. 
Allied to P. ampla Bate and P. lamelligera (Brandt). Surface pu- 
bescent. A curved, longitudinal branchial ridge present. Superior 
.spines 8 to 13, 4 to 6 l)ehind orbits, the insertion of the posterior 
spine at middle of carapace, anterior spine (exclusive of a subterminal 
spine) behind middle of rostrum: inferior spines 8 to 12. Peduncle 
of antennida extends a little past middle of antennal scale; second 
segment 1^ times as long as third. Peduncle of antenna reaching to 
end of second segment of antennula; scale three-fourths to four-tifths 
as long as carapace, broader behind than in P. ampla. The outer 
