ANO 
PLATE 
Species 141. (Mus, Burrough.) 
ANODON GLozosa. An. testd subeequilaterali, lata, tenuit, 
valdé inflatd, ovato-subglobosd, pallidé  olivaced, 
lineis fuscis concentricis cincté, lineis numerosis 
anticis et medianis numerosis et Jasciis tribus postan- 
gularibus viridibus radiata, inths alba ; latere antico 
brevitisculo, umbonibus plenis, undulatis ; margine 
ventrali, concavo, dorsali elevato ; latere postico lato, 
expanso, superné angulato, subacuminato, margine 
dorsali elevato, ared postangulari, Jasciis tribus 
radiato ; margine ventrali sursdm acclivi, 
GLOBOsE ANopon. Shell subequilateral, wide, 
elevated, thin, much inflated, ovate-subglobose, 
pale olive, girt with concentric brown lines, rayed 
with numerous anterior and central lines and 
three postangular green bands; white within ; 
anterior side rather short, umboes full, undulated, 
ventral margin concave, dorsal elevated ; posterior 
side wide, expanded, angular above, subacumi- 
nated, dorsal margin elevated, postangular area 
rayed with three bands; ventral margin sloped 
upward. 
Lea. Obs. on Unio, vol. iii. p- 79, pl. 24, f. 56, 
Hab. Concha Lake, near Vera Cruz, Mexico, 
THE 

Species 142. (Mus. Lewis.) 
Anopon Lewis. An. testd elongato-subcylindracea, 
levigatd, tenebroso-olivaced, ints ceeruleo-alba iride- 
scenti ; latere antico brevissimo, angusto ; latere 
postico elongato, subarcuato, obscuré biangulato, ad 
terminum truncato ; margine dorsali elevato, laterali 
perobliquo, undulatim convexo ; umbonibus acutis, 
prominulis, ad apices rugoso-undulatis ; margine 
ventrali convexo. 
Lewis's ANopon. Shell elongate-subcylindrical, smooth, 
dark olive, bluish white, iridescent within; an- 
terior side very short, narrow; posterior side 
elongated, slightly arched, obscurely biangular, 
truncated at the end, dorsal margin elevated, 
lateral very oblique, wavily convex ; umboes acute, 
rather prominent, roughly undulated at the 
apices. 
Lea. Obs. on Unio, vol. viii. 
187. 
Hab. Erie Canal and Mohawk River, 
p- 44, pl. 62, fig. 
DON. 
XXXV. 
Species 143. (Mus. Brit.) 
Anopon Sna@rrerranus. An. testd subrhomboidea, ob- 
longa, crassa, inflata, castaned, nitidd, obscure 
radiata, intus salmoned ; latere antico brevi, angusto, 
rotundo ; medio obliqué depresso, umbonibus subau- 
rantiis, ad apices undulatis, margine ventrali rec- 
tidsculo ; latere postico latitisculo, biangulato, mar- 
gine dorsali elevato, laterali obliqué convexo, terminali 
truncato, 
Sua@rrer’s Anopon. Shell subrhomboidal, oblong, 
thick, inflated, chestnut, smooth, obscurely rayed, 
salmon within ; anterior side short, narrow, round; 
middle obliquely depressed, umboes slightly 
orange, undulated at the apices, ventral margin 
rather straight; posterior side rather wide, bian- 
gular, dorsal margin raised, lateral obliquely 
convex, terminal truncated. 
Lea. Obs. on Unio, vol. v. p. 44, pl. 26, fig. 50. 
fab, Horn Lake Creek, Tennessee. 

Species 144, (Mus. Wheatley.) 
Anopon Linneanus. An. testd lata, elevatd, inflata, 
subequilaterali, luteo-olivaced, concentricé striatd, 
obscuré radiata, ints salmoned; latere antico 
rotundo, margine dorsali brevi, recto, vix cuneato ; 
medio inflato, umbonibus amplis, ad apices rugoso- 
undulatis, margine ventrali vald2 convexo; latere 
postico angulato, subacuminato, latissimo, margine 
dorsali elevato, recto, ared postangulari trigond, 
Shell broad, elevated, inflated, subequilateral, yellowish 
olive, concentrically striated, obscurely rayed, 
salmon within; anterior side round, dorsal 
margin short, straight, scarcely cuneated ; middle 
inflated, umboes full, roughly wrinkled at the 
apices, ventral margin very convex; posterior 
side angulated, slightly acuminated, very broad, 
with dorsal margin elevated, straight, posterior 
angle trigonal. 
Lea. Obs. on Unio, vol. v. p. 45, pl. 27, f. 51. 
Hab. Lake Concordia, Louisiana. 
Much more nearly equilateral than Anodon globosus, 
with thesurface a little striated and therefore less shining 
The dorsal margin is much more elevated, and the 
posterior angle more decided and less oblique. 

June, 1870. 
