OXYSTOMATOUS AND ALLIED CRABS OF AMERICA ]^Q]^ 



Measurements. — Male holotype, length of carapace, spine excluded, 

 31, width 28 mm. Female (69291), length 34, width 32.8 mm. 



Range. — From Gulf of California, Mexico, to Ecuador; 2 to 58 

 fathoms. 



Material examined. — See table 50, page 162. 



PERSEPHONA FINNEGANAE Rathbun 



Figure 37; Plate 42, Figures 4, 5 



Persephona Uchtenstcini Finnegan, Journ. Linn. Soc. London, ZooL, voL 37, p. 



614, fig. 2, 1931; not P. Uchtenstcini Leach, 1817, nor P. lichtcnsteinU Bell, 



1855.1' 

 Persephona finncganae Rathbun, Proc. Biol. Soc. Washington, vol. 46, p. 184, 



1933 (t3'pe locality, Sao Sebastiao, Brazil; holotype male, U. S. N. M. no. 



67989). 



Diagnosis. — Seven strong spines, one hepatic (paired) and one at 

 widest part of carapace (paired); of the posterior spines the median 

 reaches half again as far back as the lateral pair. 



Figure ST.— Persephona ftnneganae, male, type (Brit. Mus.): Carapace, X3. 



Description. — Carapace, exclusive of spines, slightly longer than 

 wide; subglobular, posterior half narrower than anterior. Surface 

 covered with coarse, separated granules on a ground of fine, close 

 granulation interspersed with punctae. Intestinal region partially 

 defined by shallow furrows; two pairs of short, thumbnail, almost 

 longitudinal indentations just behind the middle of carapace. Seven 

 slender, acute spines; the hepatic are more triangular than the bran- 

 chial spines and of subequal length; between them, but nearer the 

 branchial spine there is a low, blunt tooth; of the posterior spines the 

 pair on the posterior border are a little longer than the hepatic spines; 

 the median or intestinal spine is about one and one-half times the 

 length of the posterior lateral spines and forms a right angle with 

 them. In a small specimen from Trinidad (66784) the median spine 

 is longer and heavier than the other spines, being twice as long as the 

 neighboring spines. 



" Dr. Finnegan overlooked Bell's description and figure. 



