48 NEW YORK STATE MCBfcUM 



on the authority of Lea, and ten species were hypothetically 

 included in the list, making sixty-three species in all, as follows : 



Preliminary List of New York Unionidae. 



1 alatus 'Unio), Say. 



2 anodontoides { Uhio), Lea. 



3 Benedictii (A.nodonta), Lea. 



4 Boydianus (Unio), Lea. 



5 cariosus (Unio), Say. 



6 clavus (Unio), Lamarck. 



7 coccineus { Unio), Lea. 



8 complanata {Margaritana), 



Lames. 



9 complanatus (Unio), Solander. 



10 crassidens (Unio), Lamarck. 



11 deltoidea {Margaritana), Lea. 



12 edentula t Anodonta), Say. 



13 elegans {Uaio), Lea. 



14 ellipsis ( Unio), Lea. 



15 fabalis (Unio), Lea. 



1 6 Ferussaciana (Anodonta) , Lea. (1) 



17 fluviatilis (Anodonta), Dillwyn. 



18 Footiana (Anodonta;, Lea. 



19 fragilis (Anodonta), Lamarck. 



20 gibbosus (Unio), Barnes. 



21 gigantea (Anodonta), Lea. 



22 gracilis (Unio), Barnes. 



23 heterodon (Unio), Lea. 



24 Hildrethiana {Margaritana), 



Lea. 



25 hippopaeus (Unio), Lea. (2) 



26 imbecillis (Anodonta), Say. 



27 implicata (Anodonta), Say. 



28 iris (Unio), Lea. 



29 lacustris (Anodonta), Lea. 



30 laevissimus (Unio), Lea. 



31 Lewisii (Anodonta), Lea. 



32 ligamentous (Unio), Lamarck. 



33 luteolus (Unio), Lamarck. 



34 margaritifera (Margaritana), 



Linnaeus. 



35 marginata (Margaritana), Say. 



36 multiradiatus (Unio), Lea. 



37 nasutus (Unio), Say. 



38 Novi-Eboraci (Unio), Lea. 



39 occidens (Unio), Lea. 



40 ochraceus (Unio), Say. 



41 ovatus (Unio), Say. 



42 parvus (Unio), Barnes. 



43 patulus (Unio), Lea. 



44 pavonia (Anodonta), Lea. (3) 



45 perplexus (Unio), Lea. 



46 phaseolus (Unio), Hildreth. 



47 plana (Anodonta), Lea. (3) 



48 pressus (Unio>, Lea. 



49 pustulatus { Unio), Lea. 



50 radiatus (Unio), Lamarck. 



51 rectus (Unio) Lamarck. 



52 rubiginosus (Unio), Lea. 



53 rugosa (Margaritana), Barnes. 



54 spatulatus { Unio), Lea. 



55 subcylindracea (Anodonta), 



Lea. 



56 Tappanianus (Unio), Lea. 



57 triangularis (Unio), Barnes. (4) 



58 trig onus ( Unio), Lea. 



59 undulata (Anodonta), Say. 



60 undulata (Margaritana), Say. 



61 undulatus (Unio), Barnes. 



62 ventrieosus (Unio;, Barnes. 



63 verrucosus (Unio), Barnes. 



Unio coccineus, Unio ellipsis, Margaritana deltoidea and Mar- 

 garitana Hildrethiana, which were hypothetically included in 

 the preliminary list, have since been reported from New York 

 localities and are undoubtedly inhabitants of the States. The 

 Museum collection contains specimens of Unio coccineus from 

 the Allegheny river at Warren, Pa., collected by Dr. C. E. 

 Beecher. Mr. S. M. Luther has presented a specimen of Unio 



(1) Erie Canal.— Oe Kay. 



(2) Lake Erie . — Lea. Typical locality. 



(3) Onondaga Lake. — De Kay. 

 (4; Niagara River.— Lea. 



