EVOL. XV, - PROCEEDINGS OF THE NATIONAL MUSEUM. 253 
Rostrum very slender, more than half as long as the remainder of the 
-earapace. Horns subcylindrical, tapering to a fine point; outer margin 
spinulose for its posterior half; a narrow interspace at base; horns con- 
tiguous for the middle third; slightly divergent at tips. 
Orbits slightly projecting. Praocular and postocular teeth distinct, 
acute. Basal antennal joint with a short spine at the antero-external 
angle, visible from above. There is a tooth at the insertion of the sec- 
ond joint, pointing downward; and an obtuse tooth on the outer mar- 
gin. Remaining joints very slender. 
Chelipeds long, slender, pubescent except on the fingers. Merus and 
carpus tuberculate. Hand long, compressed, not dilated, granulate. 
Fingers in male gaping at base; tips brown; a short broad tooth on the 
dactyl. Ambulatory legs very slender, pubescent. First pair much 
longer than the others. Dactyls spinulose beneath. 
Length of carapace, including rostrum and posterior spine, 22; length 
of rostrum, 7.5; branchial width, including spines, 10; without spines, 
8.5; width between tips of preocular teeth, 6 millimeters. 
One individual, a male, was taken in the tangles, between Jamaica 
and Hayti, lat. 17° 44’ 05” N., long. 75° 39’ W., 23 fathoms, coral, 
broken shells, station 2138, 1884, U.S. Fish Commission (6929), 
This species can not be confounded with any other described species 
of the genus, on account of its narrow, elongated carapace and slender 
rostrum. 
Microphrys bicornutus (Latreille). 
_ Pisa bicornuta (Latreille, Eneye. Méth., x, p. 141, 1825). 
Pericera bicorna Milne Edwards, Hist. Nat. des Crust., 1, p. 337, 1834. 
Pisa bicorna Gibbes, Proce. Amer. Assoc. Ady. Sci., 3, p. 170, 1850. 
Pericera bicornuta Guérin, in La Sagra’s Hist. of Cuba, p. x11, 1856. Martens, Arch. fiir 
Natur., XxXXvill, p. 85, pl. 1v, fig. 5, 1872. 
Pericera bicornis Saussure, Rev. et Mag. de Zool., (2), 1x, p. 501, 1857; Mém. Soc. 
Phys. Genéve, xiv, p. 428, pl. 1, fig. 3, 1857. 
Milnia bicornuta Stimpson, Ann. Lye. Nat. Hist. N. Y., vir, p. 180, 1860; Bull. Mus. 
Comp. Zool., 11, p.111,1870. Smith, Trans. Conn. Acad., 11, pp. 1, 33, 1869; Amer. 
Jour. Sci., XLVI, p. 389, 1869. 
Pisa galibica (Desbonne and Schramm, Crust. de la Guadéloupe, p. 18, 1867). 
Pisa purpurea (Desbonne and Schramm, loc. cit.). 
Omalacantha hirsuta Streets, Proc. Acad. Nat. Sci. Phila., (3), 1, p. 288, 1871. A. Milne 
Edwards, Miss. Sci. au Mexique, pt. 5, 1, p. 65, 18738. 
_ Microphrys bicornutus A. Milne Edwards, Nouy. Archiy. Mus. Hist. Nat., vu, p. 247, 
1872; Miss. Sci. au Mexique, pt. 5, 1, p. 61, pl. xiv, figs. 2-4, 1873. Miers, Chal- 
lenger Rept., Zool., xviI, p. 83, 1886. Heilprin, Proc. Acad. Nat. Sci. Phila., p. 
318, 1888. Aurivillius, K. Sv. Vet.-Akad. Hand., Bd. 23, 1, p. 55, pl. 2, fig. 4, 1889. 
Pocock, Jour. Linn. Soc. London, xx, p. 507, 1890. Ives, Proc. Acad. Nat. Sei. 
Phila., p. 178, 1891. Kendall, Bull. U. S. Fish Comm., 1x, p. 303, 1889 (1891). 
Microphrys bicornuta Kingsley, Proce. Acad, Nat. Sei. Phila., XXXI, p. 386, 1879. 
; RECORD OF SPECIMENS EXAMINED. 
Florida: 
Cape Florida; Drak. Palmer, 1884 (9360). Key Largo; H. Hemphill (15116). 
Lower Matacumba Key, among grass, below low tide; H. Hemphill (15114). 
Indian Key; H. Hemphill (15117), Florida Bay (Union College Coll.). 
