148 BULLETIN OF THE 



Callinectes ornatus Ordway. 

 CaUinectes ornatus Ordway, Monograpli of the genus Callinectes (1861), p. 6. 



Found al Key West in from •_' to •"» fathoms. 



The Callinectes ornatus of Smith (Trans. Conn. Acad, of Arts and 

 Sci. II, 8) is probably not the same as that of Ordway, as the Brazilian 

 specimens are described as having the carapax deeply areolated, which is 

 not the case in specimens from the Florida coast. 



Acheloiis Ordwayi Stm. 

 Acheloiis Ordwayi Stimpson, Notes on N. American Crustacea (1SG0), p. 90. 



Smith, Trans. Conn. Acad, of Arts and Sciences, II, 9. 

 Neptunus Ordwayi A. Milne-Edwards, Arch, du .Museum d'Hist. Nat., X, 

 Add. 



The carapax is everywhere granulated above, except on certain spaces 

 about the middle. The depressed pubescent areas on the male abdomen 

 are characteristic. 



For the differences between this species and A. spinimanus and A. 

 cruentatus, see the excellent description of Smith, referred to in the 

 synonymy. 



Dredged in from 5 to 7 fathoms between Fast and Middle Keys, 

 Tortugas. 



Acheloiis spiniearpus nov. sp. 



Carapax convex, and rendered uneven by granulated ridges and protu- 

 berances similar to those seen in all species of Acheloiis, hut which are 

 generally much less prominent than in the species tinder consideration. 

 The branchial ridge (that extending inward from the lateral spine) is 

 sinuous and strongly convex forward. The lateral spine is long, equalling 

 in length two thirds that of the entire antero-lateral margin. The eight 

 smaller teeth of the anterolateral margin vary somewhat in si/e, the 

 second, fourth, and sixth, counting from the front, being smaller than the 

 others. Front moderately prominent, projecting slightly beyond the 

 level of the outer angles of the orbit; teeth sharp, triangular, rather 

 deeply cut. and about equal in size, hut the median ones are more promi- 

 nent than the outer ones. The postero-latural angles of the carapax are 

 armed with a slight tooth. In the chelipeds, the meros-joint is armed 

 in front with lour or five spines (usually four on one side and five on the 

 other) ami with one spine at the outer extremity. The inner spine of 

 the carpus is xrry long, two thirds as long as the palm of the hand. The 

 outer .-pine of the carpus i- short. There is only one spine on the 

 superior margin of the hand. There is no spine on the meros-joint of the 

 posterior pair of ambulator) feet, bul the margins of this joint are den- 

 til date. 1 both above and below, most strongl) so toward the extremities. 



