ANODON.—Prate XI. 
levigatd, anticé pallidé fuled, posticé obscure olivaced, 
intis flavidd ; latere antico brevi, angusto, rotundo, 
margine ventrali~subsinuato ; latere postico oblique 
elongato, infra expanso, oblique angulato, post angu- 
lum bisuleato, inter sulcos striato, margine dorsali 
recto, margine laterali obliquo, termino acuminato, 
margine ventrali inflato, sursum acclivi, umbonibus 
parvis, minute undulatim tuberculatis. 
Tur Japan ANopon. Shell compressed, lanceolate, thin, 
smooth, pale-brown in front, dull olive behind, yel- 
lowish within; anterior side short, narrow, rounded, 
ventral margin slightly sinuous; posterior side ob- 
liquely elongated, expanded below, obliquely angu- 
lar, with two grooves behind the angle, striated be- 
tween the grooves, dorsal margin straight, lateral 
margin oblique, end acuminated, ventral margin in- 
flated, sloping upwards, umboes small, with small 
wave-like tubercles. 
Yon Buscu. 
Hab. Japan. 
Resembling Unio tennissimus in outer form. 

Species 34. (Mus. Cuming in Brit.) 
Anopon Bongutn. An. testd solidd, subreniforini, com- 
a Rio aa ieee 5 
pressd, postice viridi, antice fusca, intus subpurpured ; 
latere antico brevissimo, infra inflato, medio depresso, 
contracto, subsinuato ; latere postico expanso, margine 
‘ 
dorsali elevato, margine laterali declivi, infra truncato. 

BonELL’s ANODON. Shell solid, somewhat kidney-shaped 
compressed, green behind, brown in front, purplish 
within; anterior side short, inflated beneath, middle 
depressed, contracted, slightly sinuous; posterior 
side expanded, dorsal margin elevated, lateral mar- 
gin sloping, truncated below. 
Frrussac. 
Hab. Lago Maggiore. 

Species 35. (Mus. Cuming in Brit.) 
Anopon Senpecatunsts. An. testd oblonga, subcom- 
pressa, solida, epidermide fusco-olivaced, crassa, indu- 
ta, strits duplicatis, serratis, radiata; latere antico 
breviusculo, rotundo, medio depresso, subcontracto, 
margine subsinuato; latere postico oblongo, obscure 
angulato, inargine dorsali recto, margine laterali 
obliquo, termino obtuso, umbonibus levigatis, subviri- 
dibus. 
Tne Seneca Anopon. Shell oblong, rather compressed, 
solid, covered with an olive-brown thick epidermis, 
rayed with double serrated strive; anterior side ra- 
ther short, rounded, middle depressed, slightly eon- 
tracted, with somewhat sinuous margin; posterior 
side oblong, obscurely angulated, with dorsal mar- 
gin straight, lateral margin oblique, with obtuse end, 
wnboes smooth, rather green. 
Lea on Unio, vol. vii. p. 78. pl. 41. f. 140. 
Hab. Senegal. 

