134 
CRUSTACEA. 
somewhat rugose, but hardly tuberculous, and 
marked, together with the tarsi, which are at least 
one-fifth longer than the preceding joint, with tufts 
of short hairs, or with depressions, from which the 
hairs have been removed ; these depressions some- 
times form an interrupted sulcus on the upper side 
of the tarsus. Color yellowish ; length of carapax 
rather more than an inch, but perhaps becomes 
larger by age. 
It is labelled as having been brought by Dr. Her- 
ring from Surinam, and may, perhaps, be allied to 
P. oculatus, (Fabr,) and to P. crassimanus, (Edw.) 
it has much resemblance, in form, to the P. Labil- 
lardieri, (Savigni, Egypt, Crust., PL 9, fig. 2.) 
A small specimen, evidently of the same species, 
is preserved in the collection, labelled as having 
been found in the East Indies by J. Longstreth. 
P. decorus. Mus. Acad. 
Testa polita, profunde punctata, fronte rostrata, manibus 
ferrugineis, tuberculosis, apice digitorum albo, pedibus an- 
nulis coccineis cinctis. 
Anterior portion of the thorax longer than broad, 
front with a very small rostrum ; eyes extremely 
small, pedicles slender, bluish, rather longer than 
the anterior margin of the shell, and more than 
twice as long as the appendage of the external an- 
tennse ; carapax bluish, with numerous large punc- 
tures, having their cavities pale; antennae bright 
orange; anterior feet dark reddish, carinate above, 
with somewhat short, triangular, very unequal 
hands studded with white tubercles; the fingers 
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