28 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
the upper, slender, and composed of ten to twelve segments. The 
peduncle of the antenna reaches slightly beyond the eye. The acicleis 
slender, slightly curved, and reaches to the tip of the peduncle, and 
inside its base there is a minute tooth, while outside there is a straight 
spine toothed or spined along its inner edge, acute at the tip and half 
as long as the acicle itself. The flagellum is nearly naked, and about 
three times as long as the carapax. 
The exposed parts of the oral appendages are very nearly as in #. 
bernhardus. 
The chelipeds are longer, much narrower, and more nearly equal in 
size than in E. bernhardus, and, as in that species, are almost entirely 
naked, but beset with numerous tubercles and low spines. ‘The right 
cheliped is about as long as the body from the front of the carapax to 
the tip of the abdomen. The merus and carpus are subequal in length, 
while the chela is about once and a half as long as the carpus. The 
carpus and chela are rounded above and armed with numerous tuber- 
cles, which are smaller and more crowded on the chela than on the 
carpus, but the sarface between the tubercles is smooth and polished. 
The dorsal surface of the carpus is limited along the inner edge by a 
sharp angle armed with a double line of tubercles, while the outer edge 
is rounded. The chela is very little wider than the carpus, and is nar- 
rowed from near the base to the tips of the digits, and both edges are 
rounded. The digits are rather slender, about half as long as the entire 
chela, slightly gaping, with acute and strongly incurved chitinous tips, 
and the prehensile edges armed with a very few obtuse tubereculiform 
teeth. The left chela is much more slender than the right, but reaches 
to or a little by the base of its dactylus. The carpus is slender, higher 
than broad, only slightly expanded distally, and with the narrow dorsal 
surface flattened, naked, nearly smooth, and margined either side with 
a single line of spiniform tubercles, while the rest of the surface is beset 
with low, squamiform, setiferous tubercles. The chela is about a third 
longer than the carpus, slender, about two and a half times as long as 
broad, and the dactylus about two-thirds the entire length. The dorsal 
and outer surface is tuberculose, and a low obtuse ridge extends from 
near the middle of the base along the propodal digit, which tapers from 
the base to the tip, while the dactylus is nearly or quite smooth except 
for a few fascicles of seta, more slender than the propodal digit, and 
tapered only near the tip. The chitinous tips of the digits are slender, 
acute, and strongly incurved, and the prehensile edges are sharp, and 
armed with a closely set series of slender spines or sete. 
The ambulatory legs reach considerably beyond the right cheliped, 
and the second pair reach to the tips of the first pair. In both pairs 
the meri and propodi are approximately equal in length and longer than 
the carpi, while the dactyli are about once and a half as long as the pro- 
podi, slender, strongly curved, and distally strongly twisted. The two 
