C. furcata, rur. raceniosa, I^Moo k. 



Mononualia : lar^c patcJirs (in m'ouiid under rlicstuut^. 

 Dillc's. Mci-ccr: same Livowth iindci- oal^s. near I'cavt^' 

 Spi-inu'. 



C. cristatella. Tiu k. 



Monongalia : on an old dccavi'il lou'. Falling Run 

 (1886). - ■ • ' 



DIATOMACE/E 



(Only one attei^ipt-'lias liecn made :<o I'ar to colleet spe- 

 cies in. tliis sub-claes ; this was a dredging in a small 

 ])asture pool near Morgantown. The result was kind- 

 ly i'xamine(l.-and the species identitie<l. hv the J^ev. 

 Albert Monn. -Ir.) 



Cymbella gastroides. Kuetz. 

 turgidai ( ; r u n . ) . (J reg. 



Stauroneis Phoenicentron, ]]liih. 



Navicula viridis, Kuetz. 

 major. Kuetz. 

 nobilis; Khrh.j, Kuetz. 

 rhomboides, Ehrh. 

 borealis^EIirb.), K\ietz. 

 trinodis, Lewis. 



nir. 



Achnanthes lanceolata, Ihch. 

 Synedra Ulna( Xitzsch.j, Ehrh. 

 Xif:-sr/ii(i ^lii,p/n<).ri/.-<, ra/' intermedia, (irun. 



