GEOGRAPHICAL DISTRIBUTION OF NEW YORK TJNIONID^E 51 



Several species which do not appear in the preliminary list 

 have been reported to me from New York or from near by extra- 

 limital localities. A list of these species is given further on, but 

 they are not discussed in this paper. But little information con- 

 cerning them has been received, as attention was not called to 

 them in the preliminary list, and some of them, as, for example, 

 Unio Liebii, Anodonta cepiniana, Tryonii, salmonia and decora 

 have not been generally recognized by collectors. 



After making the changes proposed above, the list contains 

 54 species which were contained in the original list, and 10 spe- 

 cies which have been reported in addition, as follows : 



Unionidae inhabiting New York. 



alatus (Unio) Say. 

 anodontoides (Unio) Lea. 

 Benedictii ^Anodonta) Lea. 

 Boydianus (Unio) Lea. 

 cariosus (Unio) Say. 

 clavus (Unio) Lamarck. 



* U. patulus, Lea. 

 coccineus (Unio) Lea. 

 complanata 'Margaritana) Barnes, 

 complanatus (Unio) Solander. 

 crassidens (Unio) Lamarck, 

 deltoidea (Margaritana) Lea. 

 edentula (Anodonta) Say. 

 elegans (Unio) Lea. 

 ellipsis (Unio) Lea. 

 fabalis (Unio) Lea. 

 Ferussaciana (Anodonta) Lea. 



*A. Subcylindracea, Lea. 

 fluviatilis (Anodonta) Dillwyn. 

 Footiana (Anodonta) Lea. 

 fragilis (Anodonta) Lea. 

 gibbosus (Unio) Barnes, 

 gracilis (Unio) Barnes, 

 heterodon (Unio) Lea. 

 Hildrethiana (Margaritana) Lea. 

 imbecilis (Anodonta) Say. 

 implicata (Anodonta) Say. 

 Iris (Unio) Lea. 



*Novi-Eboraci, Lea. 



lacustris (Anodonta) Lea. 

 Lewisii (Anodonta) Lea. 

 ligamentous (Unio) Lamarck, 

 lateolus ( Unio) Lamarck, 

 margaritifera (Margaritana) Lin- 

 naeus. 



marginata (Margaritana) Say. 

 multiradiatus (Unio) Lea. 

 nasutus (Unio) Say. 

 Occidens (Unio) Lea. 

 ochraceus (Unio) Say. 

 ovatus (Unio) Say. 

 parvus (Unio) Barnes, 

 perplexus (Unio) Lea. 

 phaseolus (Unio) Hildreth. 

 pressus (Um<)) Lea. 

 radiatus L T nio) Lamarck, 

 rectus (Unio) Lamarck, 

 rubiginosus (Unio) Lea. 

 rugosa (Margaritana) Barnes, 

 spatulatus (Unio) Lea. 

 Tappanianus (Unio) Lea. 

 triangularis (Unio) Barnes, 

 trigonus (Unio) Lea. 

 undulata (Anodonta) Say. 

 undulata (Margaritana) Say. 

 undulatus (Unio) Barnes, 

 ventricosus (Unio) Barnes, 

 verrucosus (Unio) Barnes. 



Considered synonymous with the name preceding. 



