20 STALK-EYED CRUSTACEA. 
equal size; the fifth is much smaller; all the teeth are granulous on their an- 
terior border, smooth on their 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 marginal tooth of the front; there is a 
closed fissure near the middle of the superior orbital border; the external 
fissure is a triangular notch; a blunt tooth at the mner angle of the lower 
margin. ‘There is no subhepatic tubercle. A transverse row of tubercles on 
the front of the eye-stalk (when viewed retracted 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 stout, superior border rounded and squamoso-tuberculate, 
outer surface smooth; fingers of larger chela gaping, movable finger armed 
with a large blunt tooth at base; fingers of smaller chela slenderer, without 
prominent teeth; fingers of both hands black, hooked at extremities, tips 
crossing. Upper edge of merus of ambulatory appendages lightly denticu- 
lated, excepting the posterior pair. 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 males (3 adults, 2 young). 
ONS 0G se AOOnr aa 1 male. 
The name Micropanope polita was published a short time before Panopeus 
tanneri, but if this species is referred to the genus Panopeus, the specific name 
politus cannot be used, since it was applied to a different species by Professor 
8. I. Smith in 1869. The genus Micropanope has not been clearly defined 
either by Stimpson or A. Milne Edwards. The type of the genus, M/icropan- 
ope sculptipes Stimps. (= M. pugilutor A. M. Edw.), does not seem to belong 
to the same assemblage of species as Panopeus tannert, which differs from the 
typical species of Panopeus merely by the granulation of the carapace and 
the serration of the meri of some of the ambulatory appendages. These pecul- 
iarities do not, in my opinion, justify the separation of P. tannerd from the 
genus Panopeus. 
