U N I 



Species 68. (Mus. Cuiuing.) 

 UiS'lo NUCLEOPSls. Uii. testa oblique ovata, so/idit, pos- 



tice vix umjulatd ; lavigata,fidvo-oHvaced. 

 The kernel Unio. Shell obliquely ovate, solid, poste- 

 riorly scarcely angled ; smooth, i'ulvous-olive. 

 CoNiiAD, Anthony, MS. in Mus. Cuniiiii;-. 

 Hah. North America. 

 Of very simple cliaracter. 



Species 09. (Mus. Cuming.) 



Unio Cii.\ttanoogaensis. L'h. testa peroblique cuncald, 

 versus um&oiies Imnidd, antice brevissiiiid, postice atte- 

 nuato-productd ; fiilvo-olivaced, nigricaiiie-vlridi con- 

 centrici sitbremoti fasclald. 



The Cii.vtta.sooga Unio. Shell very obliquely wedge- 

 shaped, swollen towards the umboes, anteriorly very 

 short, posteriorly attenuately produced ; fulvons-olivc, 

 concentrically rather distantly banded with dark- 



Lea, Journ. Acad. Nat. Sci. Phil, second series, vol. iv. 



Obs. vol. vii. p. 27. pi. 25. f. 30. 

 ILiL. Chattanooga, North America. 



A very characteristic species, peculiarly obliquely wedge- 

 shaped, painted with rather distant concentric bands. 



Species 70. (Mus. Cuming.) 



Unio Eaveneliensis. Un. testa oblique ovatd, compres- 

 siiisc/ild, autice rotundatd, postice declici-productd, 

 vix aiir/idatd ; bruimescente-olivaced. 



Ravenel's Unio. Shell obliquely ovate, rather com- 

 pressed, anteriorly rounded, posteriorly slopingly 

 produced, scarcely angled ; brownish-olive. 



Lea, Trans. Amer. Phil. Soc. 1832. Obs. vol. i. p. lU. 

 pi. 3. f. 5. 



Ilab. Tennessee Eiver, Nortli America. 



A rounded form of oblique growth, compressed towards 

 the ventral marniii. 



Species 71. (Mus. Cunii 

 s. Un. tesld puruhliqiii 



I'ifortiii, 



iiiiibones crassd, gibbosd, autice alibreviato-lriiucatd, 

 postice compresse elongato-productd ; luleseente-oliva- 

 ced, nigrieaute-viridi obscure irregulariler concentrice 

 fasciatd. 



The eallen Unio. Shell very obliquely wedge-shaped, 

 thick and gibbous towards the umboes, anteriorly 

 shortly truncated, posteriorly compressly elongately 

 produced ; yellowish-olive, obscurely irregularly con- 

 centrically banded with dark-green. 



Lea, Trans. Amer. Phil. Soc. 1830. Obs. vol, i. p. 103. 

 pi. 13. f. 23. 



Hab. Alabama Eiver, North America. 



Peculiarlv thick and heavv about the umbces. 



Species 72. (Mus. Cuming.) 



Unio muxdvs. Uu. testa sublaii cune'iformi, crassd, au- 

 tice brevissimd, postice oblique decUvi-productd ; ful- 

 vescente-olivaced, viridi concentrice maculatd. 



The neat Unio. Shell rather broadly wedge-shaped, 

 thick, auteriiirly very short, posteriorly obliquely 

 slopingly pimliirid ; fulvous-olive, concentrically 

 blotched Willi -ivrn. 



Lea, :\IS. in Mus. (Auuiug. 



Hab. North Aiiieiica. 



Of a broad wedge-shaped form, with the green colour- 

 ing in concentric band-like blotches. 



Species 73. (Mus. Cuming.) 



Unio cuneatus. Un. testa oblongo-cuneiforml, valde 

 cowpresm, medio contrricld, postice declivi-productd, 

 vix augulutd ; Jaho-olicaced, viridi radiatim macu- 

 latd. 



The vvedge-shai'Ed Unio. Shell oblong wedge-shaped, 

 very compressed, contracted in the middle, posteri- 

 orly slopingly produced, scarcely angled: fulvous- 

 olive, radiately blotched with green. 



Eafinesque, Mon. Coq. de la riv. Ohio, Ann. (ien. Sc. 

 Phys. Bru.x. 1S20, vol. v. p. 287. 



Ilab. North America. 



A very compressed 

 painting not in eonceii 



ith tl 



November' 1864. 



