U N I 



Species 375. (Mus. Cuming in Brit.) 



1'niu DlscoiDEUS. Uii. iestd maynd , ienid, iiiflatd, a/a/ii, 



oviild, concenlrice rugatd, olivaced, iidiis purpurea, 



cardiue tenia, dentibus lateruUbits hmlnatis ; latere 



jio-stico lato, iiijlato, obscure bianr/idato, ■mnrgiiie dur- 



riiKjun 

 ncclie 



""'J'' 



dor 



sail in alam elevatam expanso, term 

 fruiicato, margine veiitrall poslice 

 ■medio rectiuscido ; latere aiiiico bre 

 sail siibalato, rectiuscido. 



'J'he discoid L'nio. Sliell large, tliiu, inflated, winged, 

 oval, conceutrically wrinkled, olive, purple within, 

 iiinge tliin, lateral teeth laminar; posterior side wide, 

 inflated, obscurely biangular, dorsal margin expanded 

 into an elevated wing, end traucated between the 

 angles, ventral margin posteriorly sloping upwards, 

 rather straight in the middle; anterior side short, 

 dorsal margin slightly alated, rather straight. 



I.KA, 'rnins. Amcr. Phd. Soc. vol. v. t. 11. f. 33. 

 r,iiu leuiiis, Grillitli. 

 I'uiu hiagiiijicus, Lea. 

 I cannot i)ut regard the Unio maguificiis as a variety ol' 



this species, although larger iu size. 



Uni 



Species 276. (Mus. Cuming in Brit.) 

 NiCKLlNlANUS. Un. testd magnd, laid. 



complaiiatd, nigricaiiti, snbcioieatd, poslice oblique an- 

 giddto, rugis talis divaricntis ui/dato, nodidis parvis 

 riigato, aiitice covceidrice nndato, nodidifero, it/Ins 

 nlbo, margine eardiiiali lato, crasso ; latere postico 

 lata, margine dorsali alato, complanalo, termino infrii 

 Iniiicalo, iiiiirijiiie veiitrall coiivexo ; latere anlicu 

 bred, acnminalu, margine dorsali declivi, rerlo. 



Nicklin's Unio. Shell large, wide, thick, flattened, 

 blackish, subcuneate, obliquely angular behind, waved 

 with wide, diverging wrinkles, roughened with small 

 nodules, concentrically waved in front, noduliferous, 

 white within, cardinal margin wide, thick ; posterior 

 side broad, dorsal margin winged, flattened, truncated 

 beneath at the end, ventral margin convex ; anterior 

 side short, acuminated, dorsal margin sloping, 

 straight. 



Lea, Trans. Araer. Phil. Soc. vol. v. t. 1. 



JIab. China. 



More trui 

 The scidptur 



than U. 



inpla 



November, 18GC. 



