AGN: OWDEOEN. 
IPT AMT Bee Ne IeXCs 
Species 71, (Mus. Cuming in Brit.) 
Anopon Kexetit. An. testa tenui, compressa, subensi- 
formi, oblongo-ovatd, levigatd, ad latera leviter ru- 
gata, viridi, intus et ad umbones pallideé fulva ; latere 
postico elongato, subexpanso, prope maryinem dorsalem 
oblique depresso, margine dorsali recto, ad terminum 
subcuneato, margine laterali curvilineari, termino acu- 
minatim producto, margine ventrali equaliter et valde 
inflato ; latere antico brevi, subacuminato, angustato, | 
umbonibus parvis, complanatis, tenuiter undulatis. 
Ketint’s ANopon. Shell thin, compressed, subensiform, 
oblong-ovate, smooth, lightly wrinkled at the sides, 
green, pale fawn within and at the umboes ; posterior 
side elongated, subexpanded, obliquely depressed near 
the dorsal margin, dorsal margin straight, subcuneate | 
at the end, lateral margin curvilinear, acuminately 
produced at the end, ventral margin equally and very 
much inflated; anterior side short, subacuminated, 
narrow, umboes small, flat, finely undulated. 
? MS. in Cuming’s Cabinet. 
Hab. ——? 

Species 72. (Mus. Cuming in Brit.) 
Anopon Rayr. An. testa tenui, subinflata, oblongo-sub- 
trigond, levigatd, pallidé olivaced, obscure radiaté, 
intus subceruled ; latere postico expanso, angustato, 
margine dorsali elevato, recto, cuneato, margine late- 
rali obliquo, convexo, obscure biangulato, margine ter- 
minali truncato, infra acuminato, margine ventrali 
rectiusculo ; latere antico angusto, umbonibus tubercu- 
latis. 
Ray’s Anopon. Shell thin, subinflated, oblong-subtri- 
gonal, smooth, pale olive, obscurely rayed, bluish 
within; posterior side expanded, angular, dorsal 
margin elevated, straight, cuneate, lateral margin 
oblique, convex, obscurely biangular, terminal margin 
truncated, acuminated below, ventral margin rather 
straight; anterior side narrow, umboes tuberculated. 
Durvy, 5 
Hab. 

? 


Species 73. (Mus. Cuming.) 
ANODON LacusTRIs. Ax. testd obliqué ovatd, tenui, le- 
vigatd, subinflatd, aurantio-flavidd, ad latera sub- 
Juscd, obscuré radiata ; latere postico expanso, obtuse 

biangulato, ad terminum acuminato, margine dorsali 
elevato, superné area compressa alato, margine ventrali 
prope angulum paulo elevato; latere antico brevi, su- 
perne subquadrato, umbonibus undulatin trifariam tu- 
berculiferis. 
THE LAKE ANopoN. Shell obliquely ovate, thin, smooth, 
subinflated, orange-yellow, brownish at the margins, 
obscurely rayed; posterior side expanded, obtusely 
biangular, acuminated at the end, with the dorsal 
margin elevated, winged above in a compressed area 3 
ventral margin a little raised near the angle; anterior 
side short, rather square above, umboes with three 
rows of undulating tubercles. 
Lea, Obs. on Unio, vol. viii. p. 45. pl. 62. f. 188. 
Hab. Lakes in New York. 

Species 74. (Mus. Cuming in Brit.) 
ANODON SALMONEA. An. testa tenui, tumidd, ovato-sub- 
cuneatd, levigatd, obscure olivaced, intus et ad umbones 
salmoned ; latere postico oblique angulato, angulo ele- 
vato, ared postangulari obscure biangulatd, margine 
dorsali recto, subelevato, margine laterali concavo, ter- 
mino inferiori acuminato, margine ventrali leviter ar- 
cuato; latere antico angustato, rotundato, margine 
dorsali subcuneato, umbonibus prominentibus, leviter 
tuberculatis. 
THE SALMON-TINTED ANODON. 
subcuneate, smooth, dark olive, salmon-tinted within 
and at the umboes; posterior side obliquely angular, 
Shell thin, tumid, ovate- 
angle elevated, postangular area obscurely biangular, 
dorsal margin straight, slightly elevated, lateral mar- 
gin concave, lower termination acuminated, ventral 
margin slightly arched; anterior side narrow, rounded, 
dorsal margin subcuneate, umboes prominent, slightly 
tuberculated. 
Lea, Obs. on Unio, vol. ii. p. 45. t. 14. f. 41. 
Hab, Ohio. 
The elevated posterior angle of this shell distinguishes 
it from others, which it nearly resembles. 

Species 75. (Mus. Cuming in Brit.) 
ANODON DactyLus. dn. testd oblonga, cylindraced, crassa, 
aurantio-fuscd, levigatd, intus pallidissimé rosed ; la- 
September, 1867. 
