ORDER DECAPODA — HYAS, 3 
(EXTRA-LIMITAL.) 
Genus Lepropopra, Leach, Exterior antenne short. Rostrum slender and much elongated, not 
emarginate. The second pair of feet much longer than all the others; pincers slender, 
linear. Eyes not retractile, and on a short peduncle. 
L. calcarata. (Say, Jour. Acad, Nat. Sc. Vol. 1, p. 455. Epwarps, l.c. Vol. 1, p. 276.) Third joint 
of the last four pair three-spined at their tips; the middle spine obtuse, and half as long as the next 
joint. Ocular peduncles slightly projecting before the eyes in an obtuse spine. Length, 1-0; 
transverse diameter, 0°25. Charleston, S. C. 
GENUS HYAS. Leach. 
Shield very tubercular, subtriangular, rounded behind, with the rostrum advanced and emar- 
ginate. First joint of the exterior antenne larger than the second, and compressed and 
dilated externally. Pincers larger but shorter than the other feet. Eyes on short pedun- 
cles ; orbits with a fissure above and behind. Feet all terminated with a long conic and 
somewhat arched nail. 
Hyas CoarcTata. 
PLATE VII. FIG. 14. 
Hyas coarctata, LeAcuH, Malacostr. Podopth. Brit. pl. 21, B. 
Ef. 4a: DesmareEst, Consid. générales, p. 148. 
Lissa fissirostra, Say, Jour. Acad. Nat. Sciences, Vol. 1, p. 79. 
H.  coarctatag. M1Lne-Epwarps, Hist. Nat. des Crust, Vol. 1, p. 312. 
HH id, Gou xp, Invertebrata of Mass. p. 326. 
Description. Shield wide in front, tapering from behind to the orbits, verrucose, and co- 
vered with short hooked hairs. External angles of the orbits with a large triangular spine. 
Rostrum depressed, broad at the base, and deeply cleft. Hands equal, linear, not much 
larger than the feet, but shorter. The shield strongly coarctate on the sides behind the external 
orbital angles. 
Color, greenish brown; but on the removal of the incrustation, brownish tinged with 
reddish. 
Length, 2°0. Greatest transverse diameter, 1°5. 
This Crab, which was first described by Leach, occurs along the coast of Long island, and 
is found in deep water along the northern coast, where it affords an abundant supply of food 
to the Cod-fish. It is probably a boreal species, not extending south of the seacoast of 
New-York. 
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