NO. 1591. ‘-SCHIZOPODS FROM ALASKA—ORTMANN. 9 
wide in V. vulgaris). Propodites of legs with 9 to 12 joints, 1. e., 
the third cormopod (first true leg) has 9 joints, the fourth and fifth 
have 11 joints, the sixth, seventh, and eighth have 12 joints; for the 
rest, the true legs resemble those of V. vulgaris. Telson elongate- 
triangular, about three times as long as broad at the base, margins 
with 20 to 23 spines, occupying a little more than the distal two- 
thirds of the margin, the proximal part being unarmed. These 
spines are rather uniform in size, increasing slightly and uniformly 
toward the tip, being very crowded near the tip, while near the prox- 
imal part of the margin they are slightly more distant from each 
other. Spines at the corners of the narrowly truncated apex resem- 
bling the adjacent marginal spines; between them are two small 
spines. Uropods as in N. vulgaris. Pleopods of male resembling 
closely those of V. vulgaris, but the distal joint of outer branch of 
the fourth is about half as long as the proximal, and a little longer 
than the terminal filaments. 
Type.—Cat. No. 31493, U.S.N.M. 
This species is closely alhed to Neomysis vulgaris (Thompson) 
of North Europe,’ but differs in the more slender antennal scale, 
the number of joints of the propodites of the true legs, the relative 
length of the two joints of the outer branch of the fourth pleopods 
of the male, and in the shape and armature of the telson. J. 
vulgaris attains a length of 17 mm. 
Neomysis americana (Smith) from the northeastern coast of 
North America,? is distinguished by the evenly rounded rostrum 
the antennal scale, which resembles that of V. vulgaris, the fourth 
pair of pleopods of the male, in which the first jomt of the outer 
ramus 1s 4 to 5 times as long as the second, while the latter is little 
more than half as long as the terminal filaments, and by the telson, 
which resembles in shape that of V. vulgaris, and has unequal mar- 
ginal spines, with several smaller ones in the intervals of the larger. 
Size, 14 mm. 
Another species belonging to this genus is Veomysis rayi (Mur- 
doch), from Point Barrow, Alaska,’ but this species is much larger 
(up to 65 mm.), the rostral projection is quadrangular with rounded 
corners, the propodites of the true legs have 8 to 9 joints. The telson 
resembles that of V. vulgaris, but the account of it given by Murdoch 
is not full enough to make an exact comparison. 
4@Sars. Monogr. Mysid., ISOS SOs plaxexxdives) NOLMaAns Anne Nate ELISE: 
(6), X, 1892, p. 261. 
® Rep. U.S. Fish Comm., I, 18738, p. 552, and Trans. Conn. Acad., V, 1879, p. 
106. ; 
“Proc. U. S. Nat. Mus., VII, 1884, p. 519, and Rep. Pol. Exp. Point Barrow, 
1885, p. 141 pl. 1, fig. 3. 
