io eS ‘ § & es Oe 
256 CRABS OF THE FAMILY PERICERIDA—RATHBUN. 
tact for one-half their length, diverging at the extremities in slight 
curves convex to each other, each appendage terminating in a right- 
angled hook, the point.of which is directed toward the median line of 
the carapace (Pl. XxXxIV, fig. 2). 
The chelipeds are variable, in full grown males usually slender, 
shorter than the first pair of ambulatory legs and not much stronger 
than in the female; but in five out of fifteen large males the chelipeds 
are from one and a half times to nearly twice as long as the carapace, 
and are of the same character as in aculeata. The palms are, however, 
longer and narrower, and the merus more cylindrical and less angled 
than in aculeata, in which species the merus has three depressed tuber- 
cles on the upper margin. The two species agree in the widely gaping 
fingers of the male, with a tooth near the base of the dactyl, and in 
the short, weak chelipeds of the female, with fingers evenly dentate 
and in contact. 
The carpal joints of the ambulatory legs are longer and more slender 
than in aculeata, and have a shallow groove on the outer surface which 
in aculeata is broad and deep, leaving a conspicuous ridge on either side. 
The carapace of lherminieri is smoother and more pubescent; that of 
aculeata more tuberculous; a character most noticeable in very young 
specimens. 
RECORD OF SPECIMENS EXAMINED. | 
Florida: 
Key Largo (15090), Lower Matacumba Key (14085), No Name Key (14077); H. 
Hemphill. Harbor Key (Union College Coll.). Key West; H. Hemphill | 
(9286); D. S. Jordan (15093), U.S. Fish Commission (15092). South Florida; | 
S. Stearns (3463). Marco (15091), Punta Rassa (13837), Charlotte Harbor | 
(15096); H. Hemphill. Charlotte Harbor, young (Union College Coll.). 
Sarasota Bay; H. Hemphill (6424, 6431); (Union College Coll.). Boca Ceiga 
Bay; ‘1. Hemphill (15094). Off northwest end St. Martins Reef; Lieut. J. 
F. Moser, U. 8. N. (15097). Cedar Keys; H. Hemphill (15095). 
Jamaica; T. H. Morgan, 1891. q| 
West Indies; U. 8. Fish Commission, 1884: 
Jamaica (16188); St. Thomas (16189); Curacao (16190); Old Providence (9133). 
Sabanilla, United States of Colombia; U. S. Fish Commission, 1884 (15820). | 
On the west coast of Florida where lherminieri is abundant, aculeata | 
rarely occurs, but one small specimen in the Union College collection | 
representing that region. 
O. lherminieri has been recorded from Guadaloupe and Cuba. 
Othonia carolinensis, sp. nov. 
Plate Xxxvy, figs. 1 and 2. 
The following description is based on two imperfect male specimens 
collected off Charleston, S. C., by Mr. R. E. Earll, U. 8. Fish Com- 
mission, 1880: 
Carapace nearly as broad as long, tapering posteriorly, broadest at 
the third antero-lateral tooth; regions well defined. Width of front 
intermediate between that of aculeata and lherminieri. Carapace with, 
