66 



U K I O . 



Unio Nilssoni. Koch. 



Unio Bucalis. Meek & Hay. 



Unio nuciformis. Bibb. 



Unio Oriovacensis. Horn. 



Unio orthonotus. Con. 



Unio ovalis. (Anthracosia, King) Turlon. 



Unio paradoxus. Fisch. Brown. 



Unio parallelus. Sow. 



Unio penultimus. Gabb. 



Unio peregrinus. Phill. 



Unio petrosus. Mort. 



Unio phaseolus. Sow. 



Unio Phillipsii. Williams. Bronn. 



Unio Pianensis. & Wood. 



Unio pictorum. Zam. 



Unio pinguis. Sand. 



Unio planus. Romer. Bronn. 



Unio porrectus. $bw. Mant. 



Unio primigenius. Con. 



Unio priscus. Meek & Hayden. 



Unio problematicus. Klip. Bronn. 



Unio radiatoides. Zea. 



Unio Eoanokoides. Lea. 



Unio robustus. Sow. 



Unio Komeri. Bunk. Bronn. 



Unio rostratus. <& TFoocZ. 



Unio Eouxii. Noul. 



Unio saxulum. A/oW. 



Unio Slavonicus. Horn. 



Unio Solandri. Soiu. Flem. 



Unio splendens. Gold/. Bronn. 



Unio Staffinensis. Forbes. 



Unio striatus. Gold/. Bronn. 



Unio Stricklandii. Phill. 



Unio strictiplicatus. Aom£. 



Unio Sturi. Horn. 



Unio subconstrictus. (Anthracosia, King.) 



jSW. Flem. 

 Unio subporrectus. Homer. Bronn. 

 Unio subrotundoides. iea. 



Unio subrugosus. Mathe. Bronn. 



Unio subsinuatus. A"ocA. 



Unio subspatulatus. JfefeeA & Hayden. 



Unio subtetragonus. A Wood. 



Unio subtriangularis. Brown. 



Unio subtrigonus. Desh. Bronn. 



Unio subtruncatus. Fitton. 



Unio subtumidus. 1 D'Orb. 



Unio sulcatus. Eichio. Bronn. 



Unio suprajurensis. Romer. Bronn. 



Unio tellinarius. Gold/uss. 



Unio terrenus. Jlbr£. 



Unio Toulouzanii. Mathe. Bronn. 



Unio transversalis. J/, cfe >Serr. 



Unio transversus. Brown. 



Unio trigonus. 2 Homer. Koch. 



Unio truncatosa. J/i'c/t. 



Unio tumidus. >SW. 



Unio tumulatis. J/br<!. 



Unio turgida (Carbonicola). M'Coy. 



Unio umbonatus. Fisch. Bronn. 



Unio uniformis. «Sb«;. Flem. 



Unio Urii. Flem. 



Unio Valdensis. Mantell. 



Unio ventricosus. Bouil. Bronn. 



Unio Verae-Pacis. Tristram. 



Unio vetusta. Meek. 



Unio Voltzii. Koch. 



Unio Vukontinovici. Horn. 



Unio "Walteri. Mant. Bronn. 



Unio Wetzeleri. Dunk? 



Unio Zelebori. Horn. 



Unio . &w. 4 



Deshayes, 7Vat<. Flem., vol. ii. p. 215, says 

 M. Noulet found, in tbe Middle Tertiary of the 

 Sub-Pyrenean basin, nineteen species of fossil 

 Uniones; but he does not give their names, nor 

 the work of M. Noulet. 



1 D'Orbigny's Prod. Paleeonto., vol. ii. p. 306, substitutes subtumidus for tumidus, Sow., it being pre- 

 occupied. 



2 U. trigonus was described by Romer in Nord. Ool. 1836. I published my trigonus in Trans. Am. 

 Phil. 1831, and therefore have precedence. 



3 In Pictet, Traite", vol. iii. p. 529. 



4 Referred to by figure in Mag. Nat. Hist., vol. ii. p. G47. It has the form of Uttoralis, and is found 

 at "Gray's." 



