66 



UNIO. 



Unio Nilssoni. Koch. 

 Unio nucalis. Meek <fr Hay. 

 Unio nuciformis. Hibb. 

 Unio Oriovacensis. Horn. 

 Unio orthonotus. Con. 

 Unio ovalis. (Anthracosia, King.) Turton. 

 Unio paradoxus. Fisch. Bronn. 

 Sow. 

 (7aJ6. 

 Phill. 



Unio parallelus. 

 Unio penultimus. 

 Unio peregrinus. 

 Unio petrosus. 

 Unio phaseolus. 

 Unio Phillipsii. 

 Unio Pianensis. 

 Unio pictorum. 

 Unio pinguis. 



Sow. 



Williams. 

 . Wood. 

 Zam. 

 Sand. 



Bronn. 



Unio planus. Homer. Bronn. 



Unio porrectus. /SW. Mant. 



Unio primigenius. Cbn. 



Unio priscus. Meek & Hayden. 



Unio problematicus. Klip. Bronn. 



Unio radiatoides. iea. 



Unio Roanokoides. Lea. 



Unio robustus. Sow. 



Unio Romeri. Dunk. Bronn. 



Unio rostratus. . TFooc?. 



Unio Rouxii. Noul. 



Unio saxulum. J/or/. 



Unio Slavonians. Horn. 



Unio Solandri. Soiu. Flem. 



Unio splendens. Goldf. Bronn. 



Unio Staffinensis. Forbes. 



Unio striatus. Goldf. Bronn. 



Unio Stricklandii. Phill. 



Unio strictiplicatus. JVbwZ. 



Unio Sturi. Horn. 



Unio subconstrictus. (Anthracosia, King.) 



(SW. Flem. 



Unio subporrectus. Homer. Bronn. 

 Unio subrotundoides. 



Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 

 Unio 



subrugosus. MatJie. Bronn. 

 subsinuatus. Koch. 

 subspatulatus. J/ee& < Hayden. 

 subtetragonus. & Wood 

 subtriangularis. Brown. 

 subtrigonus. Dcsh. Bronn. 

 subtruncatus. Fitton. 

 subtumidus. 1 D'Orb. 

 sulcatus., Eichw. Bronn. 

 suprajurensis. Homer. Bronn. 

 tellinarius. Goldf uss. 

 terrenus. J/orf. 

 Toulouzanii. Mathe. Bronn. 

 transversalis. J/. cfe /Sfcrr. 

 transversus. Brown. 

 trigonus. 2 Homer. Koch. 

 truncatosa. Mich. 

 tumidus. /Saiy. 



tumulatis. J/or<. 







turgida (Carbonicola). J/' Coy. 

 umbonatus. Fisch. Bronn. 

 uniformis. Sow. Flem. 

 Urii. Flem. 

 Valdensis. Mantell. 

 ventricosus. Bouil. Bronn. 

 Verje-Pacis. Tristram. 

 vetusta. Meek. 

 Voltzii. Koch. 

 Vukontinovici. Horn. 

 "Walteri. J/a?i<. Bronn. 

 Wetzeleri. Dunk? 

 Zelebori. Horn. 



Deshayes, TVm'tf. Mem., vol. ii. p. 215, says 

 M. Noulet found, in the 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. Palseonto., 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. 

 1'liil. 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. 647. It has the form of littoralis, and is found 

 at "Gray's." 



