MUSEUM OF COMPARATIVE ZOOLOGY. 153 
finely denticulate, and separated from the orbital areolets by a groove. Antero- 
lateral border of the carapace armed with four spines or teeth, E, N, T, 8, of 
Dana’s nomenclature, there being no tooth at the external orbital angle; of 
these teeth the first is the smallest, the third the largest, and the second and 
fourth are of about equal size; the margins of all the teeth are denticulate. 
The chelipeds are short and unsymmetrical; the merus is granulated on its 
outer face, spinulose on the upper edge, and grooved near the articulation with 
the carpus. The carpus is granulated on its outer side, and furnished with a 
median internal tooth. The meri of the ambulatory appendages are spinulose 
along their upper edges. 
Length of carapace, 8 mm.; breadth, 11 mm. 
Station 3355. 182 fathoms. 1 male, 1 female. 
2 BBA SB ae 1 male, 3 females. 
Panopeus latus, sp. nov. 
Carapace broad, convex in antero-posterior direction, granulated, especially 
on the hepatic, branchial, and cardiac regions; areolations well marked and 
protuberant. Front divided by a small median incision into two slightly con- 
vex lobes, whose edges are simple and not produced into teeth at the lateral 
angles. Antero-lateral margin cut into five teeth; post-orbital tooth small, 
separated from the second tooth by a shallow granulated sinus ; the third tooth 
is the broadest, and rounded off at the apex; the fourth is the most salient, 
and acute; the fifth is very small, and acute; all the teeth have crenate or else 
spinulose margins. The margin of the orbit is minutely crenulate; its upper 
part is marked by two closed fissures; the external hiatus of the orbit has the 
form of a triangular notch; the lower margin is produced to form an obtuse 
tooth at the inner angle. The subhepatic region is granulous, but not pro- 
vided with a tubercle. The merus of the third pair of maxillipeds is also 
granulated. The carpus of the chelipeds is rough with small tubercles, grooved 
along the distal margin of the outer side, and armed internally with a small 
blunt tooth; the hands are robust, inflated, smooth except near their articu- 
lation with the carpus where scattering granules appear ; upper and lower mar- 
gins rounded; fingers long, down-curved, smooth, canaliculate, their cutting 
edges irregularly armed with small and rather sharp teeth, without any promi- 
nent basal tooth; when closed the fingers are separated by a slight gape, and 
their tips cross one another; the color of the fingers in alcoholic specimens is 
very light brown. The chele of the right and left sides are unequal in size, 
but similar in shape. The ambulatory appendages are setose, their merus 
joints furnished with small teeth along their upper edges. The seventh seg- 
ment of the sternum in the male is entirely concealed by the base of the abdo- 
men. The coxe of the fifth pair of legs are in contact with the third abdominal 
segment. The penultimate segment of the abdomen has concave sides, the 
terminal segment is broad and rounded. 
