126 STALK-EYED CRUSTACEA. 
In W. leptodactyla the armature, as given by Spence Bate, is as fol- 
lows: — 
Vian cimellemeren ens 8 — 5 — 18 to 23. 
Median ridge .. 6—4. 
The marginal spines which lie behind the cervical groove, when present 
in W. inornata, ave but rudimentary, while there are no spines on the sub- 
marginal carina or along the lateral boundaries of the cardiac area, where 
they are present in W. /eptodactyla. The spine on the anterior margin of the 
carapace at the internal orbital angle is smaller than in W. leptodactyla. If 
the figure of W. leptodactyla given by Bate is correct, there is an important 
distinction between the two species in the tergum of the sixth abdominal 
somite and in the pleuree of the second abdominal somite. In W. inornata the 
dorsal carina of the sixth segment is double anteriorly and in the quadran- 
cular depression on either side there is a raised crescentic figure with its 
concavity turned outward. The horizontal axis of the second abdominal 
pleurze is much longer in proportion to their vertical axis than it is in W. lepto- 
dactyla and these pleuree are much narrower and more produced anteriorly. 
In W. forceps A. M. Edw., the carapace is more inflated, closely beset 
throughout with minute spinules, its sides more convex. 
Station 3374. 1823 fathoms. 8 males, 6 fem. 
Sa ooOle. Mito) wees 1 male, 1 fem. ovig. 
és goons 193) = as 2 males, 4 fem. (1 ovig.). 
cs Ba00e iO es 2 males, 1 fem. 
eS A008 a2 ace 1 fem. 
As in W. leptodactyla, the posterior thoracic appendages are perfectly chelate 
in both sexes. 
The branchial formula is as follows : — 
Somites VIII. IX. Re XI. 2G ONO aN 
Pleurobranchie 0 0 0 1 1 i ear! 
Arthrobranchie 0 1 2 2 2 2 Oa) 
Podobranchie 0 0 1 1 1 if = 
Epipods 0 1 1 1 1 1 C= (5) 
17+ (5) 
The gills and epipods in general are large and well developed, the 
epipods equalling the podobranchix in length. The third maxilliped carries 
only a slender epipod, and the membrane that connects this appendage with 
