ZOOLOGY OF FERNANDO NORONHA. 
523 
longer than the antennnlar peduncle, shorter than the peduncle 
of the antenna. Basal segment of antenna not provided with a 
spine. 
Legs of first pair absent. 
Carpals of the second pair differing upon the two sides, on the 
right side the fifth segment being longer than the second, and on 
the left side shorter. In each case the first is the longest, and 
the third and fourth the shortest. 
Carpus and rneros of third and fourth pairs not produced 
below into a tooth. 
Dactyli of third, fourth, and fifth pairs simple. 
Alpheus, sp. 
(Too mutilated for identification.) 
Carapace furnished in front with a short rostrum, which does 
not project as far as the middle of the first segment of the 
peduncle of the antennula, and is separated by a depression on 
each side from the ocular hoods. Each ocular hood furnished 
with a spine. Antennular spine short, sharp, not reaching to 
the front margin of the basal segment of the peduncle. Second 
segment of the peduncle the longest, the first and third approxi- 
mately equal in length. Antennal scale as long as antennal 
peduncle, a little longer than antennular peduncle. Basal seg- 
ment of antenna furnished with a long, sharp spine, which pro- 
jects as far as the middle of the second segment of the antennular 
peduncle. 
Eirst and second pairs of legs absent. Carpus and meros of 
third and fourth pairs not produced below in front into a strong 
process. Dactyli of third, fourth, and fifth pairs bifid. 
[The Alphei were taken in numbers from the holes in which 
they hid by breaking up the coral-reef. — H. N. A.] 
Family Pe NiE i DiE. 
Genus Stenopusculus, Richters. 
1880. Stenopusculus, Richters, Beitrdge zur Meeresfauna der Iusel Mau- 
ritius und der Seychellen, von Mobius, Richters und v. Martens, p. 167. 
Stenopusculus spinosus, n. sp. 
? Syn. Stenopusculus crassimanus, Richters, t. c. p. 168, pi. xviii. figs. 
27-29. 
Upper portion of cephalothorax sparsely spined ; spines in 
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