Callinectoi I. 



The African Swimming Crabs. 151 



Callinectes bocourti A. INIilne Edwards. 



int'cte.'i bdcourli A. ^lilne Edwards, Crust. Reg. Mex., 226, 1S79 (variety 

 of ('. (Hnciiiilliiis). Riviere de Mnllins, 20 miles soutli of Belize, Hon- 

 duras. Types examined. 



('o///»fc/('.s c(n/('iiiu'iisis A. INIilne Edwards, loc. ril. (variety of C. diacaiitJivs). 

 Cayenne. Types examined. 



Qdlincctci^ f bocourti Rath bun, op. cit., 'M'tO. Not C. africanus A. Milne 

 Edwards. 



Specimens of C. hocomii from British Guiana in the Britisli Museum are 

 labeled " C. trl^pinosus Leach;" so also are sj^ecimens of C. exasptratus 

 from Jamaica. Probably neither are types, as the locality of Lupa trispin- 

 osa is not given by Leach. 



Distribution.— West Africa: Senegal (V. S. Nat. ]\Ius., No. 18735) ; Libe- 

 ria (Berlin ]\Ius., No. 3647) ; Chinchoxo (Berlin Mus., No. 5566). Ameri- 

 can coast: Honduras to Rio de Janeiro, Brazil. 



Callinectes latimanus Rathbun, new species. 



This species is so closely related to C. toxotes Ordway, from the west 

 coast of America, that it may be described by comparison with that species. 

 Cardiac and inner branchial areolets less elevated. Length of intra- 

 medial area about equal to, but not e.x'ceeding, its posterior width. Four 

 frontal teeth (fig. 6) less advanced, triangular and subacute 

 instead of rounded or lobiform. Suborbital tooth broader y\/\_/^-/\. 

 toward the extremity. Antero-lateral teetli p^^ e —CalH- 

 shorter, that is, less projecting ; margins of nectes latima- 

 second to tifth pairs, inclusive, considerably «'"• Frontal 

 shorter than their basal width. *^^*''- >< ^• 



In the abdomen of the male (fig. 7) the third or compound 

 segment is shorter than in C. toxotes; the penultimate seg- 

 ment is broader at its i)roximal end and much constricted 

 at one-third the distance from the pi-oximal end. Sides of 



manus. .'Vbdo- . . i • i i 



men of male terminal segment Sill uoiis. Appendages reaching beyond 

 X ^. the ti]) of the abdomen. In the female the sixth segment 



is onh' slightly longer than the fifth. 



Meri of chelipeds three-spined on inner 



mai'gin. Propodus of larger chelii)ed (fig. 8) 



with the lower margin very convex below the 



basal half of the pollex. The fingers are there- 

 fore more gaping, the pollex being no wider Fig.s.—C. laiimanus. Larger 



than in C. toxotes. "'^"^^- ^ ^^- 



Dimensions. — (^, No. 19877: Length to median sinus of front, 51 mm. ; 



to tips of frontal teeth, 52.5; width, 115; length of lateral spine, 11.8; 



of preceding tooth, 4.5. 



Tijpe locality . — hugos, Bight of Benin, Guinea ; Sir A. Molony, collector. 



A fine series of this species is preserved in the British JVIuseum (No. 91. 



4. 1). One specimen, a male, has been presented to the TT. S. National 



^luseum (No. l!i877). 



Fig. y.—C. lati- 



