S. I. /Smith on Brazidan Crustacea. 9 



The C. onialus was previously known from South Carolina, Tortu- 

 gas, Ilayti, and Cumana. 



Callinectes larvatus Ordway, loc. cit., p. 573, i863. 



One specimen of this species, a male, was collected at Bahia. It 

 is very much like tlie DancB and the oruatns in the carapax, etc., but 

 diifers remarkably in the male abdominal appendages of the first pair 

 (intromittcnt organs), which are very short, directed inward till they 

 cross and then the extremities curved abruptly outward. 



Length of carapax including sub-frontal spine, 38-8™™ ; breadth in- 

 cluding lateral spines, 8-2-4""" ; ratio of length to breadth, 1 : 2-11. 



Ordway's specimens were from Florida, Bahama, and Ilayti. 



Achelous spinimanus DeHaan. 



Portunus spinimanus Latreille, Encyc, t. x, p. 188 {teste Edwards). 



Lupa spinimana Leach, Desmarest, Considerations generales sur la classe des Crust., 

 p. 98, 1825; Edwards, Histoire naturelle des Crust., tome i, p. 452, 1834; Gibbes, 

 loc. cit., p. 178; Dana, United States Explorinpf Eexpedition, Crust., p. 273 ; Stimp- 

 son. Annals Lye. Nat. Hist., New York, vol. vii, p. 57. 



Achelous spinimanus, DeHaan, Fauna Japonica, p. 8, 1833; White, List of Crust, in 

 the British Museum, p. 28, 1847; Stimpson, Annals Lye. Nat. Hist, New York, 

 vol. vii, p. 221, 1860; A. Edwards, Archives du Museum d'Histoire natureUe, 

 tome X, p. 341, pi. 32, fig. 1, 1861 ; Heller, op. cit, p. 27. 



Three specimens, all females, collected at Bahia, give the following 

 measurements : — 



Length of carapax Breadth of carapax Ratio of 



including frontal teeth. including lateral spines. length to breadth. 



37-Omm 61-5""n 1 : 1 -66 



44-4 77-4 1 : 1-74 



56-0 95-0 1 : 1-70 



All the S]Decimens have the lateral spine of the carapax nearly or 

 quite twice as long as the one next in front of it. They appear to 

 difter m no way from specimens from Florida. 



Achelous Ordwayi Stimpson. 



Achelous Ordwayi Stimpson, Annals Lye. Nat Hist, New York, vol. vii, p. 242, 1860. 

 Xepfuntcs Ordwayi A. Edwards, op. cit, addenda, 186i. 



A male specimen of this fine species was collected, with the last, 

 at Bahia. 



The carapax is narrower than in A. spinimanus, and the front more 

 advanced. In areolation it resembles the spinimanus very much, the 

 elevations however are not quite so thickly granulated. The teeth of the 



