496 BULLETIN 129, UNITED STATES NATIONAL MUSEUM 



MICBOPHRYS WEDDELLI Milne Edwards 



Plate 271, figs. 2-7 



Microphrys weddelU Milne Edwards, Ann. Sci. Nat., ser. 3, Zool., vol. 16, 

 1851, pp. 251 [31] and 291 [71], pi. 10, figs. 1 and 2 (type-locality, Peru; 

 type in Paris Mus.). 



Microphrys weddellii A. Milne Edwards, Crust. R^g. Mex., 1873, pi. 14, 

 figs. 1-lc; 1875, p. 60. 



Diagnosis. — Carapace very little longer than wide. Two marginal 

 spines on hepatic region, two large spines on margin of branchial 

 region at widest part of carapace. A long spine on carpus of first 

 three legs. 



Description (after A. Milne Edwards) .- — Body and legs with little 

 hair; tiiere are only those stiff, hooked hairs which adorn the rostrum, 

 the prominent parts of the carapace, and the upper part of the feet. 

 Carapace pyriform, very wide at the branchial regions. The regions 

 are little areolated and bear on their prominent parts some feebly 

 marked tubercles; on the post-branchial lobes, however, these tuber- 

 cles are more elevated and become spiniform. A line of pearllike 

 granulations extends parallel to the posterior margin to a point 

 above the fourth pair of feet. 



Frontal horns of medium length, pointed and divergent. On 

 either side there is a stout spine belonging to the basal segment of 

 the antenna. Preorbital angle little advanced, bearing a small spine. 

 Lateral margins rough with spines; two very small on the hepatic 

 region, three of the same size on the epibranchial lobe, two others, 

 large and strong, arm the metabranchial lobe. 



Chelipeds of male very strong; hand very high and a little com- 

 pressed; fingers gaping. In the female, the chelipeds are slender 

 and the hand almost cylindrical. In both sexes the arm has about 

 three spines above. Legs short and stout, those of the second pair 

 are longer than the succeeding, and are armed on the merus and 

 carpus with a series of sharp spines; one spine on the carpus of the 

 first three pairs. 



Color. — Carapace reddish brown; feet the same color, clouded 

 with violet. 



Measurements. — Total length of carapace 36, greatest -width of 

 same 33 mm. 



Range. — From Ecuador to Chile; Guadeloupe. 



Material examined. — 



Paraca Bay, Peru; U. S. C. S. S. Hassler; 1 male (2095, M. C. Z.). 



Peru; cotypes (Paris IVIus.). 



Peru; Guerin collection; T. B. Wilson, donor; 1 male, 1 female 

 (IMus. Phila. Acad. Nat. Sci.); perhaps cotypes; labeled (by Guerin 

 probabl}^ "n. g. and n. sp., Cat. du Mus. de Paris." 



