OXYSTOMATOUS AND ALLIED CRABS OF AMERICA IQ'^ 



Measurements. — Male holotype, entire length of carapace 37, length 

 without spine 34, entire breadth 37, breadth without spines 32.2 mm. 

 Male (Trinidad), length 17.5, breadth 17, spines excluded (Gordon 

 in lift.). 



Range. — West Indies to Brazil. 3 to 17 fathoms. 



Material examined. — See table 51, page 162. 



PERSEPHONA LICHTENSTEINII Leach 



Plate 45, Figures 1, 2 

 Persephona lichiensteinii Leach, Zoological miscellany, vol. 3, p. 23, 1817 (type 

 locality not given; types, male and female, in Brit. Mus.).— Bell, Trans. 

 Linn. Soc London, vol. 21, p. 293, pi. 31, fig. 6, 1855. Not P. Uchtensteini 

 Finnegan, 1931. 



Diagnosis. — Three posterior spines of good length, forming an 

 equilateral triangle. A short tooth at subhepatic angle and another 

 at middle of lateral margin. Arm wholly granulate. 



Description (after Bell). — Carapace orbicular, depressed, sparsely 

 granulated; subhepatic angle produced into a prominent tubercle 

 or tooth; another on lateral margin on each side; between them is a 

 row of 10 large contiguous bead granules; three posterior spines equal, 

 so placed as to form the points of an equilateral triangle. Front 

 broad, nearly straight. External maxillipeds with the inner stalk 

 in the male nearly plain, with only a slight longitudinal groove; in 

 the female more deeply grooved toward inner margin. Chelipeds 

 more slender than in punctata, orbicularis, and edwardsii; arm wholly 

 covered with tubercles, very large at proximal end, becoming much 

 smaller at distal end; a Hne of granules on outer side of wrist. 



Measurements. — Length of carapace of male 26, width 26.4 mm, 

 spines excluded (Gordon in litt.). 



Range. — Known only from 2 specimens, male and female, in 

 British Museum; female is type (Leach). Locality not known. 



PERSEPHONA CRINITA Rathban 



Plate 43, Figures 2, 3; Plate 44, Figures 1-3 



Persephona crinita Rathbun, Journ. Washington Acad. Sci., vol. 21, p. 128, 

 pi. 2, 1931 (type locality, Horn Island Pass, Miss., about 3 fathoms; holotype 

 male and paratype female, U. S. N. M. no. 63739). 



Diagnosis. — A tubercle on lateral margin at middle or widest 

 part; another less than halfway to hepatic protuberance. No definite 

 marginal line. 



Description. — Male: Carapace slightly longer than broad, more 

 convex from side to side than anteroposteriorly ; front little pro- 

 duced; hinder end with three similar, short, conical spines, the 

 median one forming an angle not much in excess of a right angle. 

 Dorsal surface covered with a dense coating of short, hooked hairs 

 that conceal the small and widely separated bead granules; granula- 

 tion denser near lateral and posterior borders and continued on lower 



