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266 CRABS OF THE FAMILY PERICERTD22—RATHBUN. — 
become blunt, and each tooth consists of a central spine or tooth with 
a cluster of tubercles surrounding it. One female, however, measuring 
20 millimeters wide between the tips of the spines, has teeth even more 
slender than in large specimens. The carpus in small specimens is 
more or less tuberculous. 
Length of largest specimen from tip of rostrum, 86.5 millimeters ; 
width, including spines, 114 millimeters. 
RECORD OF SPECIMENS EXAMINED. 
Off Cape Fear, North Carolina, 14 to 17 fathoms, stations 2616 to 2619; U. 8. Fish 
Commnission, 1885. : 
Blackfish Banks, off Charleston, South Carolina; R. E. Earll, U.S. Fish Commission, 
1880 (5760). 
Florida: ; 
Lower Matacumba Key; H. Hemphill (15077). Indian Key ; H. Hemphill (15076). 
Florida Bay (Union College Coll.). Key Vaccas; H. Hemphill (15806). Be- 
tween Salt Pond Key and Stock Island; Dr. E. Palmer (9282). Four miles 
northeast of Key West; Dr. E. Palmer (9253). Key West (Union College 
Coll.). Eastern Dry Rocks; Dr. E. Palmer (13853). Mareo; H. Hemphill 
(6983). Oyster Bay; H. Hemphill (15079). Sarasota Islands; Walker and 
Stearns (16050). Sarasota Bay (Union College Coll.). Off northwest end St. 
Martins Reef; Lieut. J. F. Moser, U. S. Navy, U. 8. S. C. 8. Bache, 1887 
(13044). Lat. 28°56’ N., long. 82°55’ W., 19 feet; Lieut. J. F. Moser (13063). 
Cedar Keys; Lieut. J. F. Moser (12474). Pensacola; S. Stearns, 1882 (4501), 
trom stomach of fish (9372). 
Coast of Southern United States; U.S. Fish Commission, 1880 (5780). 
Gulf of Mexico; U.S. Fish Commission, 1885: 
Lat. 26° N., long. 82° 57’ 30” W., 24 fathoms, station 2413 (15080). 
Lat. 28° 47’ 30’ N., long. 84° 37’ W., 24 fathoms, station 2407 (15805). 
Bermudas; G. Brown Goode, 1876-1877. 
Bahamas: 
Andros Island (Stearns Coll.); Abaco, U.S. Fish Commission, 1886 (16302). 
Jamaica; T. H. Morgan, 1891. 
West Indies; U. 8. Fish Commission, 1884: 
St. Thomas (7651); Curagao (16192); Old Providence (16193). | 
Brazil; R. Rathbun, Hartt Explorations, 1875-1877. (All the branchial spines long ii 
and sharp): 
Bom Fim, Bahia, onstone reef. 
Plataforma, Bahia. 
Mithrax sinensis, sp. nov. | 
1 
Plate xxxviur, fig. 2. | 
q 
Carapace ovate, a little longer than broad, covered with tubercles. 
A deep sulcus divides the hepatic and branchial from the gastrie and 
cardiac regions. 
Front shaped much as in hispidus; rostrum consisting of two taber- 
culiform and granulate teeth separated by a rounded_sinus. Prieocu- 
lar angle obtuse; margin denticulate. Orbit with six teeth besides 
those of the antennal joint: three on the superior margin, one at the 
external angle, and two on the inferior margin. 
