U N I 



Specie^ 14.7. (Mus. Cuiiiiiij;.) 



Uvio INOltN'ATUS. Uii. (eslii oblonyo-ovatu, siibiiuoicn- 

 lari, leiiiii, ij'Moniiiscidd, latere uiifico coi/ipressi at- 

 leniiato, Lreci, i-uliiuduto, poslico dectirH Jliwitunu-an- 

 (julato, miperne coiicavo, rudialo ; fiih-o-ulivand, li- 

 vido-viridi iincld. 



The unadouned Unio. SlicU oblong-ovate, somewhat 

 boat-shaped, thin, rather gibbous, anterior side coin- 

 pressly attenuated, short, rounded, posterior slopingly 

 tlexuously angled, concaved and rayed at tiie upper 

 part ; fulvous-olive, tinged with livid grceii. 



Hanley, MS. in ^lus. Cuming. 



Ilab. Cambojia; Mouliot. 



A distinct and very characteristic type, collected by the 

 late M. Mouhot in Cambojia. 



Species 148. (Mus. Cuming.) 



Unio iris. Un. lestd subelungato-obloiigd, conipresslus- 

 culd, conceiUrice striata, umbonibus corruyalis, latere 

 aidico brevi, rotundato, posiico valde prodiido, obscure 

 truncato-aiigidalo ; fuh-o-olkaced, ciridi radkld el 

 fasciatd. 



The rainbow Unio. Shell rather elougately oblong, 

 somewhat compressed, concentrically striated, ura- 

 boes wrinkled, anterior side short, rounded, posterior 

 much produced, obscurely truncately angled ; I'ulvous- 

 olive, rayed and banded with green. 



Lea, Trans. Amer. Phil. Soc. 1829 ; Obs. vol. i. p. 53. pi. 

 ll.f. 18. 

 Unio nebuhms, Conrad. 



ilab. Ohio. 



A prettily-painted species, rather elongately produced 

 I in the posterior side. 



Species 119. (Mus. Cuming-.j 

 Unio uonTkadens. Un. testa elliptico-oblungd, Irevicjcdd, 

 latere antico breoissimo, attenuato-rolitndato, postico 

 amplilef Jtexuoso-angulato, declivi-truncato ; fnlvo- 

 olivaceo, poslice idgricante'Viridi tinctd. 

 The opposite-toothed Unio. Shell ellipticnlly oblong, 

 smooth, anterior side very short, attenuately rounded, 

 posterior largely tte.\uously angled, slopingly trun- 



green. 

 Lea, Trans. Amer. Phil. Soc. I8:jlj; Obs. 



pi. 18. f. 58. 

 Ilab. Eiver Mezherdeli, Tunis. 



A shell of 



)anaki 



Species 150. (Mus. Cuming.) 



L'NIO aUUatus. Uu.tesld urctiatim elongald, versus 

 giuem oentraleni compressu, latere antico brevis 

 rotundato, postico valde produclu, arcualim rulun 

 vijc angulato ,• fnlvo-oliimced, rereo tinctd. 



The golden Unio. Shell arcuately elongated, 

 pressed towards the ventral margin, anterior 

 very short, rounded, posterior much produced, 

 ately rounded, scarcely angled; fulvous-olive, ti 

 with bronze. 



SffAiNsoN, MS. in Mus. Cuming. 

 Unio depressus. Lesson. 

 Unio C/iduensis, I'hilippi. 

 Unio Gassiesii, Philippi. 



Hab. Island of Chiloc, Chili ; Cuming. 

 01 a ])eculiar goklen or rather bronze hue. 



Species 151. (Mus. Cuming.) 



Unio oBLIQUIKAdiatus. Un. testa ubtongo-ovutd, snb- 

 obliqad, latere antico brevissimo, allenuato-ruti/itdn/;. 

 postico latiote, delude nubattenuato-rotundalo, cix <iii- 

 gulato ; fusco-olivaced, viridi mulliradiutd. 



The obliquely-kayed Unio. Shell oblong-ovate, ra- 

 ther oblique, anterior side very short, attenuately 

 rounded, posterior broader, then somewhat attemi- 

 ately rounded, scarcely angled; fuscous-olive, many- 

 rayed with green. 



Ilab. ? 



Of an obli(|Ue form, with the anterior side peculiarly 



attenuately reduced. 



Species 152. (Mus. Cuming.) 

 Unio Mknziesianls. Un. testa uhUiiu'e uvula, ienuicida. 



June, 1865. 



