ORTMANN: UNIONTID2 OF WESTERN PENNSYLVANIA. 180 
12. Unio multiradiatus Lea = Lampsilis multiradiata (Lea). 
‘¢ mytiloides Rafinesque = Quadrula obliqua (Lamarck) 
Da. (form: pyramidata (Lea) ). 
‘6 obliquus Lamarck = Quadriula obliqua (Lamarck). 
14. 6 occidens Lea = Lampsilis ventricosa (Barnes). 
15. ‘** parvus Barnes = Lampsilis parva (Barnes). 
16. ‘*¢ phaseolus Hildreth = Ptychobranchus phaseolus (Hildreth). 
17. ‘¢ pustulosus Lea = Quadrula pustulosa (Lea). 
18. ‘* rectus Lamarck = Lampsilis recta (Lamarck). 
Ig. ‘** securis Lea = Plagiola securis (Lea). 
‘6 ~subovatus Lea = Lampsilis ventricosa (Barnes), see no. 14. 
20. §¢ subrotundus Lea = Quadrula subrotunda (Lea). 
21. Anodonta undulata Say = Strophitus undulatus (Say) (incl. 
edentulus (Say) ). 
22. Margaritana marginata Say = Alasmidonta marginata Say. 
2)3) oe rugosa Barnes =.Symphynota costata ( Rafinesque ). 
24. Ch 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. lgamentina, 
L. recta, Ptychobranchus phaseolus, Strophitus undulatus, Symphynota 
costata, Alasmidonta 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 Zampsilis 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 Lampszlis luteola (Lamarck) in Harn’s list is re- 
markable. But this species, which is common in other parts, is also 
at present absent from the Kiskiminetas drainage, and this makes it 
