DE LAS 



ABREVIATURAS DE LA LITERATURA CITADA EN ESTE TRABAJO. 



Buslk, Blake Rep. — Bush, K. J., Report on the mollusca dredged by the 

 "Blake" in 1880, iucluding descriptions of several new species, 

 (BulL Mus. Comp. ZooL Harvard ColL voL 23, 1893). 



Conrad, App. Hodge's paper. — Conrad, T. A., Deseription of new sliells. 

 En "J. T. Hodge, Observations on the Secoudary and Tertiary 

 formations of the Southern Atlantic States." (Amer. Jonrn. Sei. 

 a. A. voL 41, 1841). 



Foss. Med. Tert.— Conrad, T. A,, fossils of the Medial Tertiary 



of the United States with an introduction by W. H. Dalí (Re- 

 pnblication Philadelphia, 1893). 



■ Cat. Mioc shells. — Conrad, T. A., Catalogue of the Miocene 



shells of the Atlantic Slope Proc. [Acad. Nat. Sci. Philadelphia 



1862 (1863)]. 

 Cossmann, Paléoconch. comp. — Cossmann, M., Essais de Paléoeonchologie 



comparée, I-V (Paris 1895-1903). 

 Dalí, Syn. Astart. — Dalí, W. H., Syuopsis of the family Astartidae, with 



a review of the american species (Proc. ü. S. Nat. Mus. vol. 26, 



1903). 



Cat. Molí. a. Brach. SE. ü. S.— Dalí, W. H , A preliminary 



catalogue of the shell-bearing marine mollusks and brachiopoda 

 of the Southeastern coast of the United States, with illustra- 

 tions of many of the species (Bull. U. S. Nat. Mus. n. 37, 

 1889). 



Blake Rep. — Dalí, W. H., Report on the mollusca. En "Re 



ports on the results of dredging, under the supervisión of Ale- 

 xander Agassiz, in the Gulf of México (1877-78) and in the 

 Carribbean Sea ( 1879-60 ) by the U. S. Coast Survey Steamer 

 "Blake" Lieut.-Commander C. D. Sigsbee, U. S. N. and Cora- 

 mander J. R. Bartlett, U. S. N. Comraanding. (Bull. Mus. Comp 

 ZooL, vol. 12, 1886; vol. 18, U 



