4 NEW SPECIES OF HERMIT CRABS—BENEDICT. 
is nearly straight. The prehensile edges of the fingers are armed with 
large tubercles slightly horny near the tips. The merus joints of both 
chelipeds are very smooth on their large surfaces, but bordered with 
spines below. 
The left cheliped reaches to the base of the dactyl of the large hand. 
It is similar in shape and armature, with the exception of the prehen- 
sile edges of the fingers, which are much more horny. The carpus has 
an evenly convex outer and upper surface armed with spines. 
The dactyls of the ambulatory legs are curved, bent and twisted as 
in bernhardue and allied species, but are not compressed. 
Although this species differs from the typical species of the genus, 
in the horny tips of the fingers of the large hand, yet in all other re- 
spects it so closely resembles the characteristic species that I cannot 
place it outside the limits of the genus under consideration. 
East coast of Patagonia. ; 
Bupagurus smithi. 
The three projections of the front are about equally advanced ; all are 
angular but not sharp; the lateral are each armed with a short spine. 
The eye-stalks are short, stout, and much dilated at the corneze. The eye 
scales are short and round. ‘The small subterminal spine shows from 
above. The second article of the antennal peduncle has its outer spine 
produced and spinulose on the inner edge. The terminal article ex- 
tends beyond the eye one-half of itslength. The terminal article of the 
antennular peduncle originates opposite the distal end of the eye-stalk. 
The merus of the large cheliped is compressed. Its anterior upper 
margin and a flattened patch on the distal upper surface are spiny. The 
carpus is covered with small spines, and the inner margin is set with 
about eight large sharp spines curved slightly forward. The outer 
surface of the carpus is flattened, making a distinct surface, but there is 
no dividing line of spines or granules. The hand is broadest at the 
middle of the palm. The outer margin is fringed with short, sharp 
spines. The inner margin is unarmed except the distal half of the dacty], 
which has a few short spines. The upper surface is paved with flat- 
tened plates or tubercles, each of which is surmounted by a small spine. 
The plates are raised above the true surface of the hand and, as in simi- 
lar cases, there are many irregular-shaped fissures between them. The 
plates themselves are not all circular, but many of them havea small 
deep sinus on one side. 
The left cheliped is strong and reaches the proximal end of the dactyl 
of the large cheliped. Its merus is much compressed, making its upper 
margin thin. The distal end of this margin is armed with two strong 
spines, which project directly forward over thecarpus. The carpus is 
broad ; its inner edge is crested with sharp spines. The upper surface 
is covered with small spines, as in the other cheliped. The hand is en- 
