250 CRABS OF THE FAMILY PERICERIDZ—RATHBUN. 
The difference in the size of the antenne, noted by Stimpson, is not 
constant, but varies with the specimen. The four spines of the dorsal 
surface are situated on the cardiac, gastric, and at the inner angle of the 
branchial region. In addition to the close pubescence of the carapace, 
the front, the gastric region and the lateral portions of the branchial 
region are clothed with long hairs curved at the extremities. The lateral 
and posterior spines are longer, more slender and upturned than in 
trispinosa. 
Total length of large male, 37 millimeters; total width, 29.5 milli- 
meters. 
RECORD OF SPECIMENS EXAMINED, 
Florida: 
Indian Key, among rocks, near low tide; H. Hemphill (15140). Key West; U. 
S. Fish Commission, 1885 (15141). Off Cape Sable; Lieut. J. F. Moser, U.S. 
Navy, U.S. C. S. S. Bache, 1887 (18757). Marco; H. Hemphill (15139). Lat. 
28° 43’ N., long. 82° 56’ W., 17 feet (13055), lat. 28° 50’ N., long. 83° W. 
(13048), lat. 28° 56’ N., long. 82° 55’ W., 19 feet (13064), Cedar Keys (15138) ; 
Lieut. Moser. 
Macrocceloma diplacantha (Stimpson). 
Pericera diplacantha Stimpson, Ann. Lyc. Nat. Hist. N. Y., vu, p. 188, 1860. (Des- 
bonne and Schramm, Crust. de la Guadeloupe, p. 16, pl. v, figs. 16-18, 1867.) A. 
Milne Edwards, Miss. Sci. au Mexique, pt. 5, 1, p. 55, pl. x11, fig. 2, 1873. 
Macrocaloma diplacantha Miers, Challenger Rept., Zool., xv11, p. 79, 1886. 
RECORD OF SPECIMENS EXAMINED. 
Key West, Florida; H. Hemphill, 1885; one female (9365). 
St. Thomas; U.S. Fish Comm., 1884; one male (16182). 
Old Providence; U.S. Fish Comm., 1884 (9156). 
Recorded from Guadaloupe. 
Macrocceloma subparallela (Stimpson). 
Pericera subparallela Stimpson, Ann. Lyc. Nat. Hist. N. Y., vu, p. 182, 1860. A. Milne 
Edwards, Miss. Sci. au Mexique, pt. 5, 1, p. 54, pl. x11, fig. 3, 1873. 
Pericera vilpini (Desbonne and Schramm, Crust. de la Guadeloupe, p. 12, pl. V, figs. 14, 
15, 1867). 
Macroceloma subparallela Miers, Challenger Rept., Zool., X vu, p. 79, 1886. 
A male from Florida (?) (16054), 26 millimeters long, has on the pos- 
terior portion of the carapace, back of the transverse row of spines and 
tubercles, the short, tough pubescence arranged in irregular ridges sep- 
arated by a network of grooves. This character is less strongly 
marked in the two females from St. Thomas (16183) and Old Providence 
(16184), U.S. Fish Commission, 1884. 
Recorded from Guadaloupe. 
Macroceloma septemspinosa Stimpson. 
Pericera septemspinosa Stimpson, Bull. Mus. Comp. Zool., 11, p. 113, 1870. A. M. Ed- 
wards, Miss. Sci. au Mexique, pt. 5, 1, pp. 59, 200, pl. xv A, fig. 2, 1873. 
Macroceloma septemspinosa Miers, Challenger Rept., Zool., XV, pp. 79, 80, 1886. 
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