180 Annals of the Carnegie Museum. 



12. Unio multiradiatus Lea = Lampsilis multiradiata (Lea), 



" mytiloides Rafinesque = Quadrula obliqua (Lamarck) 



13. J (form: pyraynidata (Lea)). 



'' obliquus Lamarck = Quadrula obliqica (Lamarck). 



14. " occidens Lea = Lampsilis vetitricosa (Barnes). 



15. *' parvus Barnes ^ Z<7w/j-///j-/<zrz;« (Barnes). 



16. " phaseolus ¥i:\\d^xQ,\}ci—Ptycholn-anchusphaseolus{Js^\\^xt\\{). 



17. '* pustulosus Lea = Quadrula pustulosa (Lea). 



18. ** rectus Lamarck = Lampsilis recta (Lamarck). 



19. *' securis Lea ^ Plagiola securis (Lea). 



" subovatus Lea = Lampsilis ventricosa (Barnes), see no. 14. 



20. ** subrotundus Lea := ^//rt^/r/zAz j-«<^r(?/««^^ (Lea). 



21. Anodonta undulata ?)Z.y = Strophitus undulatus (Say) (incl. 



ede II lulus (Say) ). 



22. Margaritana marginata Say = Alasmidouta marginala Say. 



23. ** rugosa Barnes ^^jv/zZ/nv/^/^ r<?jA?^z (Rafinesque). 



24. " undulata Say. = Alasmidonta undulata (Say). 



If the last species is correctly identified by Harn, it cannot be from 

 the Kiskiminetas drainage, since it is positively absent from the Ohio 

 drainage. Yet the species is found not very far from Blairsville, in the 

 drainage of the West Branch of the Susquehanna (Clearfield Creek) in 

 Cambria County. 



Of this list of twenty-three species (disregarding the eastern form 

 just mentioned), nine have been found recently in the Kiskiminetas 

 drainage, although of some of them only dead shells have been secured, 

 or seen ; viz. : Lampsilis ventricosa, L. multiradiata, L. ligamentina, 

 L. i'ecta, Ptychobranchus phaseolus, Strophitus undulatus, Symphynota 

 costata, Alasfnidonta marginata, Unio gibbosus, and Pleurobema clava. 

 Two additional species not enumerated by Harn have been recently 

 found in the Kiskiminetas drainage : Anodonta grandis Say and 

 Quadrula coccinea (Conrad). 



The rest of the fauna is irreparably lost in the Kiskiminetas drain- 

 age, but most of these species still exist in the Allegheny River in 

 Armstrong County. In order to now find Lampsilis parva and Quad- 

 rula kirtlandiana, we are compelled to go up the Allegheny River as 

 far as French Creek and its tributaries. 



The absence of Lampsilis luteola (Lamarck) in Harn's list is re- 

 markable. But this species, which is common in other parts, is also 

 at i)resent absent from the Kiskiminetas drainage, and this makes it 



