UNIO.— Platk LXVII. 



Species 3-i2. (Mas. Tnylor.) 



Unio EMARGlNATUS. U)i. testd oblongii, subci/Vuidraccii, 

 tamidd, oUvacm, mridi conceiitrice fasciatd, iidus 

 albd ; latere pudico obtuse anijulato, marg'me. dorsali 

 nrtlmculo, luieruli obliquu, iermino basali obtiiso^ 

 viargine vmtrali I'ectimculo, medio mbcontraclo, um- 

 boiiibiis promidulis, lavibus ; latere utdico subtruncato. 



The emauginate Unio. Shell oblong, subeyliudriciil, 

 tuiniil, olive, concentrically banded with green, white 

 within ; posterior side obtusely angulai-, dorsal margin 

 rather straight, lateral oblique, basal end obtuse, 

 ventral margin rather straight, middle slightly con- 

 tracted, iimboes rather prominent, smooth ; anterior 

 side subtruncated. 



I.KA, Ob?, on Unio, vol. i. p. 174. pi. ix. f. Hi. 



Uab. -1 



Figure 343. (Mus. Taylor.) 

 Umo .Iayensis. AVe figure this elongated specimen as 

 more nearly approaching the variety named (rquiUiis 

 by Mr. Lea. 



Species 345. (Mus. Sowerby.) 



Unio sagiunatvs. L'n. testd subrotundd, lenticidari, so- 

 lidd,Jluvid(j-fiiscd,conceHli-icerugaid,nnmdegranulatd, 

 intiis ulbd, dentihm atdicis quadrjjariam dieisis, um- 

 bonibiis elevatin, rotundis ; latere poslico ad Icrtiduaiii. 

 subacumiiiaid, maryiue dorsuli decliri, laterulder com- 

 presm ; hdere untico hrevhsimo, niargine superiuri 

 valde decliri, termino acMiiiualu, ;nurgine reidrali 

 rotundo. 



The SHAGKEENEi) Unio. Shell snbrotnnd, lenticular, 

 solid, yellowish-brown, coueeutiically wrinkled, mi- 

 nutely granulated, inside white, with anterior teeth 

 divided into four, iimboes elevated, round ; posterior 

 side rather acuminated at the end, dorsal margin 

 sloped, laterally rompressed ; anterior side veiy short, 

 upper margin strongly sloped, end acuminated, ven- 

 tral margin rounded. 



SoWEItliY. 



Hab. V 



