MUSEUM OF COMPARATIVE ZOOLOGY. 195 
Family ASTACIDZE. 
Nephropsis occidentalis, sp. nov. 
Pubescent. Carapace cylindrical, the branchial regions convex. Rostrum 
densely ciliated on the margins, armed with a pair of lateral teeth near the mid- 
dle; a double row of prominent granulations on the dorsal surface, diverging 
posteriorly and continued backward for some distance on the gastric region. 
A small, blunt papilla in the median line of the gastric area, a pair of acute 
teeth near the anterior margin at the base of the rostrum, and another pair just 
above the insertion of the second pair of antenne; a small papilla in the 
median line on the intestinal region. Abdominal pleure rather longer-pointed 
than in N. stewarti, but not so much so as in N, agassizii and N, atlantica; 
their anterior borders are finely denticulated, but are destitute of spinous pro- 
cesses, Telson armed with a sharp spine in the median dorsal line, near the 
proximal end. 
Length, 119 mm.; carapace, 51 mm.; rostrum, 14 mm. ; second antenna, 
225 mm. 
Station 3418. 660 fathoms. 23 males, 32 females. 
en DARAN Sd Qi. i 2 males. 
Family ERYONTID 2. 
Willemoesia inornata, sp. nov. 
Similar to W. leptodactyla, but readily distinguished from it by the small 
number of spines on the margin and dorsal ridges of the carapace. The 
armature may be formulated thus : — 
Marginal... 65 Se. ov D 408 —2t0 3/0 to 6 
Medium age. ^76 wo UD À 
The marginal spines which lie behind the cervical groove, if found at all, are 
but rudimentary, while there are no spines on the submarginal carina or along 
the lateral boundaries of the cardiac area, where they are present in W. lepto- 
dactyla. The third maxilliped bears only a slender epipod ; the membrane 
that conneets this limb with the body carries a small, but perfeetly formed 
gill (arthrobranehia) According to Spence Bate, this gill is absent in 
W. leptodactyla. 
Station 3374. 1823 fathoms. 8 males, 6 females. 
o ane + 1 male, 1 female ovig. 
i SESS alba 2 males, 4 females (1 ovig.). 
16.598899; O t€ 2 males, 1 female. 
* — 3400. 1322 ‘i l female. 
VOL, XXIV. — NO. 7, 4 
