554 



BULLETIN 129, UNITED STATES NATIONAL MUSEUM 



tened. Merus of maxillipeds triangular, its internal angle truncate^ 

 Upper surface of arm and hand of cheliped dilated toward middle; 

 margins with a few obscure teeth, also denticulate. Crests of legs 

 denticulate. Sternum very concave in front; a deep hollow fits ter- 

 minal segment of abdomen; on each side of this hollow is a strong 

 dentate crest prolonged to basal article of cheliped. 



Measurements. — Male (15185), length of 

 carapace 6.3, width of same 7.6 mm. Fe- 

 male (49201), length of carapace 9, width 

 of same 12 mm. 



Range. — West coast of Florida to Bahama 

 Banks and St. Thomas, West Indies. 

 Depth, 4 to 34 fathoms. 



Material examined. — See table, page 551. 



Fig. 151.— Crtptopodia concava 

 (.49226), MAXILLIPED, X 28 



CRYPTOPODIA HASSLERI, new species 



Plate 202, figs. 1 and 2 



Type-locality. — Magdalena Bay, Lower 

 California, Mexico; Hassler; holotype, male 

 (Cat. No. 2074, M. C. Z.). 



Diagnosis. — Carapace much broader than 

 long. Length and breadth of rostrum sub- 

 equal. Closed fissures between marginal 

 teeth extending well up on the carapace. 

 Description. — -Closely allied to C. concava, from which it is dis- 

 tinguished by its greater breadth (1.6 times its length), narrower 

 rostrum, rounder postero-lateral angles, greater extent of the closed 

 fissures between the marginal teeth. 



Measurements. — Male, holotype, length of carapace 6.3, width 10.2 

 mm. 



Range. — Known from type-locality only. 

 Material examined. — The unique type. 



Genus HETEROCRYPTA Stimpson 



Heterocrypta Stimpson, Ann. Lye. Nat. Hist. New York, vol. 10, 1871, p. 

 102 [129]; type, H. granulata (Gibbes). 



Differs from Cryptopodia in having posterior border of carapace 

 slightly overlapping abdomen but not distinctly produced; lateral 

 clypeiform expansions less produced than in Cryptopodia, so that 

 the legs when even moderately extended can be seen beyond them; 

 pterygostomian and subhepatic regions traversed by a granular 

 ridge which runs parallel to antero-lateral border from angle of 

 buccal cavity to base of chelipeds. 



Range. — California to Panama; southern New England to West 

 Indies; eastern Atlantic; Mediterranean; Red Sea; India; Japan. 



