II08 TAJ^RKVSIA 



Unio corritgatus var. Icuznrostris Hani.ey and Theohald, 



Conch. Ind., 1876, p. 21, pi. xrjv, figs. 5, 6. 

 Parreysia corriigata var. Icevirostris Simpson^ Syn., 1900, p. 



842. 



Var. nagpoorensis (Lea). 



A rather thin, somewhat elongated, subrhomboid form with 

 reddish-brown, striate, rayless, epidermis. The type is in the 

 Wheatley collection, and there are no examples in the Lea 

 collection. It may be a valid species, but I am inclined to agree 

 with Hanley and Theobald in considering it a variety of cor- 

 rugata. 



Nagpoor. Bengal; Burma? 

 Unio nagpoorensis Lka, Pr. Ac. N. Sci. Phila., Ill, 1859, p. 

 331 ; Jl. Ac. N. Sci. Phila., I\^, i860, p. 270, pi. xr.v, fig. 150; 

 Obs., VII, i860, p. 88, pi. xT.v, fig. 150. 

 Margaron (Unio) nagpoorensis Lka^ Syn., 1870, p. 38. 

 Unio corrugatus Miill. var. nagpoorensis Hanley and Theo- 

 bald, Conch. Ind., 1876, p. 21. 

 Parreysia corrugata var. nagpoorensis Simpson^ Syn., 1900, p. 

 842. 



Parreysia wynegung.^nsis (Lea). 



Shell oblong, subrhomboid or subelliptical, slightly inflated, 

 solid, inequilateral ; beaks high, moderately full, sculptured 

 strongly with zigzag-radial bars that extend well out on to the 

 disk ; posterior ridge rounded : anterior end rounded or often 

 slopingly truncate above ; base line curved, sometimes a little 

 fuller behind the middle ; dorsal outline arcuate ; outline of 

 dorsal slope obliquely rounded or sulitruncate : surface with 

 rather strong, concentric growth lines, the dorsal slope and 

 sometimes the upper part of the anterior end having wrinkled 

 sculpture ; epidermis generally olive, often dark, occasionally 

 banded faintly, subshining ; pseudocardinals much torn and 

 ragged ; laterals two in the left valve, the lower the stronger, 

 semidouble in the right valve : anterior scars deep ; posterior 



