46 



usrio. 



03 



y. 



o 



E- 



o 



w 



t- 

 s 

 p 



CD 



Mi 



c 



OVAL. 



*Vanuxemii. Zea. Chenu. 



*constrictus. Cora. 



*placitus. Zees. 



*buxeus. Lea. 



*concavus. Lea. 



*sudus. Z?a. 



*radians. Lea. 



*difficilis. Lea. 



puniceus. Llald. 



*Goiildii. Lea. 



*delodontus. Lam. Chenu. Hupe. 

 Han. 

 Unio lacteolus. Lea. D'Orb. 



*piger. Lea. 



*fabaceus. Lea. 



' :f Uruguayensis. Lea. 



*apprimus. Lea. 



*Moussonianus. Lea. 



luteus. Lea. Blan. 



*Monroensis. Lea. 



OVAL. 



Fellmani. Desk. 

 *Binncyi. Lea. 

 *utriculus. Lea. 

 ^amellatus. 1 Lea. Chenu. Bla? 



curatus. Lea. 

 *viridiradiatus. Lea. 

 *consobrinus. Lea. 



Layardii. Blan. 

 *Menzieni. 2 Gray. 



Keraudreni. Eyd. Blan. 

 *Ferussacianus. Lea. 

 *Delesserti. Bourg. 



eucirrus. Bourg. 



Bagdadensis. Bourg. 



*Vescoi. Bourg. 



Unio SiuerzenuacJcu. Bourg. 



versus. Lea. 

 Unio inornalus? LTan. Reeve. 



*contradens. Lea. Han. 



Unio Javanus. Lea. Chenu. 

 Unio exilis.? Dunk. 

 Unio mutatus. Mouss. 



1 Blanford considers this a variety of marginalis, but they are certainly distinct. I have some from 

 Madras, and I doubt if Mr. B. has ever seen the species. 



2 This remarkably compressed species was given to me by Mr. McAndrews, of Liverpool, under this 

 name. I am not aware where Mr. Gray has described it. 



s Inornatus being preoccupied by me, I change this to versus, not being able to call it after Mr. 

 Hanley or Mr. Reeve, both names being preoccupied by me. 



