THE SPIDEK CRABS OF AMERICA 



523 



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CO cs cc c^ cc 



Ci CO ^ 00 ^ 

 OO OO O 00 05 

 QO 00 00 OO 00 



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Variation. — Varies much in 

 number and prominence of tuber- 

 cles and teeth and in constriction 

 and ornamentation of rostrum; 

 the elevations of the carapace may 

 be spines or tubercles. 



Range. — From the latitude of 

 New Jersey to Grenada. Depth, 

 10 to 134 fathoms. 



Material examined. — See table, 

 pages 520-521. 



PARTHENOPE (PLATYLAMBRUS) EXILIPES 



(Rathbun) 



Plates 184 and 185; plate 277, figs. 1 

 and 2 



Lambrus {Parthenolambrus) exilipes 

 Rathbun, Proc. U. S. Nat. Mus., 

 vol. 16, 1893, p. 234 (type-locali- 

 ty, oflf San Domingo Point, Lower 

 California, 74 fathoms ;holotype, 

 Cat. No. 17365, U.S.N.M.). 



Lambrus hassleri Faxon, Bull. Mus. 

 Comp. Z06I., vol. 24, 1893, p. 

 152 (type-locality. Albatross sta- 

 tions 3368 and 3427, 66 and 80 

 fathoms; cotypes, Cat. No. 20599, 

 U.S.N.M., and Cat. No. 4481, 

 M.C.Z.); Mem. Mus. Comp. 

 ZooL, vol. 18, 1895, p. 14, pi. 3, 

 figs. 1, la. 



Diagnosis. — N ear pourtalesii; 

 carapace broader; branchial re- 

 gions more expanded and inflated, 

 the inflation extending farther in 

 toward the cardiac area so as to 

 involve the oblique row of small 

 tubercles, which in pourtalesii lies 

 low in the fossa between branchial 

 and cardiac regions; interregional 

 depressions shallower; branchial 

 pits deeper; a transversely-oblique 

 line of tubercles across anterior 

 branchial region more conspicuous, 

 spines and teeth of carapace and 

 chelipeds shorter and stouter, those 

 on chelipeds not laciniated to 



