1879.] NATURAL SCIENCES OP PHILADELPHIA. 409 



domen and its appendages resembling those of the allied genera, 

 but narrower. Length of carapax 12 mm., breadth 6 mm., ratio 

 100:50. 



Genus HIPP A Fabr., Edw. 

 Hippa emerita Fabr. 



? Cancer emerita Linue, Syst. Nat. Ed., xii. p. 1055. 



Cancer testudinarius Herbst, pi. xxii. f. 3. 



Hippa emerita [>s] Fabr., Suppl. Ent. Syst., p. 370. Desmarest 



Consul., p. 174, pi. xxix. f. 2. Edw. Hist. Crust., ii. p. 209. Dana, 



U. S. Ex. Ex. Crust., p. 409, pi. xxv. f. 9. Miers, Journ. Linn. 



Soc, xiv. p. 313, pi. v. f. 9. 

 Hippa talpoida Say, 1. c, i. p. 1G0. Dekay, op. cit., p. 18, pi. vii. f. 



17. Smith, U. S. Fish Comra., p. 548, pi. ii. f. 5. Ibid., Trans. 



Conn. Acad., iii. p. 311. 



In the Union College collection appear specimens from the 

 beach of Chesapeake Bay opposite Fort Monroe, Beaufort, N. C, 

 Sarasota Bay, Fla. Specimens from the first locality measure 

 26 mm. in length of carapax. Mr. Miers has made a mistake in 

 quoting Prof. Gibbes, as this species does not occur at Boston 

 except in collections. 



Cape Cod to Florida (Smith), Venezuela (Miers), Cuba and 

 Mexico (Guerin), Rio Janerio (Dura, Heller, Miers), Corinto, 

 West Coast Nicaragua! (McXiel). These specimens are certainly 

 H. emerita, and not H. analoga, Stra. 



Family ALBTJNEIDiE. 



Genus ALBUNEA Fabr., Stni. 

 Albunea paretii Guerin. 



Albunea paretii Guerin, Revue et Magazin de Zoologie, II. v. p. 48, pi. 



i. f. 10. 

 Albunea oxi/ophthalma Leach (MS.), White, List Crust. Brit. Museum, 

 p. 57 (sine descr., teste Miers). Miers, Journ. Linn. Soc, xiv. p. 329, 

 pi. v. f. 14-15. 



A single specimen from Sarasota Bay agrees with Mr. Miers's 

 description and figures, except that the median emargination is 

 less deep and the lateral portion of the front more advanced and 

 more curved, the eyes also appear to be rather more slender. It 

 agrees well with Guerin's short description, and, as his was the 

 first published description, his name will of course hold. Miers 

 gives as localities 1* t. Christophers, Cayenne, and Brazil. Guerin 

 was not certain of the locality of his specimens, they were either 

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