154 BULLETIN OF THE 
Length of carapace, 6.5 mm.; breadth, 10.25 mm. 
Station 3897. 85 fathoms. 1 male. 
In this species the carapace is short, the posterior margin wider than usual 
in the genus. In its general aspect it recalls P. santhiformis A. M. Edw.; 
the meri of the ambulatory legs are denticulated on their upper margins as in 
canthiformis, but in latus the carapace is much broader and more convex in 
an antero-posterior sense, the front is less prominent and destitute of lobes at 
the lateral angles, the carpal tooth is blunt, etc. 
Panopeus tanneri, sp. nov. 
Carapace moderately convex both Jengthwise and transversely, smooth and 
polished in the central and posterior part, coarsely granular on the anterior 
gastric and hepatic regions. The gastric and hepatic areas are well marked 
off by depressions, Front nearly straight, divided by a median triangular fis- 
sure, and projecting as a blunt tooth at each lateral angle ; a double edge is 
formed by a groove which runs along the front, the lower edge projecting far- 
ther forward than the upper edge; both upper and lower edges are finely 
granulate. The antero-lateral margins of the carapace are cut into triangular 
teeth ; the first and second of these teeth are small, coalesced, connected by a 
shallow sinus; the third and fourth are of about an equal size; the fifth is 
much smaller; all the teeth are granulous on their anterior border, smooth on 
posterior border ; the depressions between the third and fourth and the fourth 
and fifth teeth are continued in as furrows for some distance on the carapace, 
finally uniting and meeting the cervical furrow. The upper margin of the 
orbit forms a tooth at the inner angle above and outside of the external mar- 
ginal tooth of the front; there is a closed fissure near the middle of the supe- 
rior orbital border; the external fissure is a triangular notch; a blunt tooth at 
the inner angle of the lower margin. There is no subhepatic tubercle. A 
transverse row of tubercles on the front of the eyestalk (when viewed re- 
tracted within the orbit) just inside the eye. Chelipeds unsymmetrical; carpus 
squamoso-rugose, with a slight transverse groove, and armed with a prominent 
but not very sharp internal tooth ; propodus robust, superior border rounded 
and squamoso-tuberculate, outer surface smooth, fingers of larger chela gaping, 
movable finger armed with a blunt tooth at base ; fingers of smaller chela slen- 
derer, without prominent teeth; fingers of both hands black, hooked at extrem- 
ities, tips crossing. Base of abdomen entirely covers the sternal segments ; 
penultimate segment of abdomen short, posterior angles prolonged backward ; 
last segment short, pentagonal. In young specimens the granules of the carpus 
and propodus are more numerous and sharper pointed. 
Length of carapace, 6,25 mm.; breadth, 10 mm. 
Station 3405. 53 fathoms, 5 male (3 adult, 2 young). 
ie 709094. OIM 1 male. 
