368 
depressis, ad latus posticum erectis, et in squamulas inequales 
divisis, in valva dextra striis postice subito evanidis ; latere 
antico semi-elliptico, obtuso, paulo longiore; latere postico atte- 
nuato, subrostrato, superne declivi, extremitate truncato, flexura 
profunda, fere levigata ; valvis intus sulphureis ; sinu pallii 
profundissimo, longe ovato. 
“Hab. ? Coll. Cuming. 
229. Tetuina Sresotpu, Desh. T. testa elongato-transversa, 
angusta, lanceolata, tenui, fragili, compressa, inequilaterali, om- 
nino rubro-purpurascente, in valva sinistra transversim tenue et 
satis regulariter striata, in valva dextra striis obsoletis ; latere 
antico elongato, obtuso, superne recto, inferne paulo arcuato ; 
latere postico breviore, valde attenuato, compresso, rostrato ; 
Jlexura angusta ; area posticali angusta, eleganter plicata, angulo 
angusto, tenue et regulariter crenato circumdata ; dentibus late- 
ralibus angustis, elongatis, equalibus, equidistantibus ; sinu pallii 
breviculo, superne gibboso, dein declivi, apice attenuato. 
Hab. Japan. Coll. Cuming. 
230. TeLLina venustTa, Desh. T. testa elongato-transversa, 
tenui, fragili, compressiuscula, inequilaterali, nitida, sulphureo- 
incarnata, ad umbones rosea, et breviter subradiata, radio unico 
angusto, roseo in plicatura posticali, transversim obsoletissime 
striata, in valva dextra, striis ad latus posticum prominentioribus, 
acutis ; latere antico elongato, obtuso, longe semi-elliptico, mar- 
ginibus parallelis ; latere postico triangulari, compresso, attenuato, 
rostrato, plicatura satis profunda, contorto, apice oblique trun- 
cato ; sinu pallit breviculo, attenuato, superne in medio gibbosulo, 
deinde declivi, et paulo excavato ; dentibus lateralibus angustissi- 
mis, elongatis, equalibus. 
Hab. Sandwich Islands, Coll. Cuming. 
231. Tevirna praLeuca, Desh. YT. testa elongato-transversa, 
tenui, fragili, turgidula, inequilaterali, nitida, hyalina, pallide 
flavo-aurantia, ad umbones subvitrea, obsoletissime transversim 
et longitudinaltter striata, striis transversis in latere postico pro- 
minulis, subrotundato-crenatis ; latere antico prelongo, longe 
semiovali, superne recto, inferne conveviusculo; latere postico 
valde attenuato, rostrato, apice breviter truncato, superne recto et 
declivi; flecura profunda, in valva dextra acute biangulata ; 
cardine angusto, inequaliter bidentato, dente laterali antico minimo, 
elongato, valde remoto, postico minore. 
Hab. Pedang. Coll. Cuming. 
232. TeLLrna suLcatina, Desh. T. testa elongato-transversa, 
angusta, compressa, tenui, inequilaterali, inequivalvi, squalide 
flavo-rubente, transversim tenue et regulariter striata, striis planis, 
latis, ad latus posticum rectiusculis, acutiusculis ; latere antico 
longe semi-elliptico, angusto, obtuso, superne inferneque recto, 
marginibus parallelis, latere postico subtrigono, elongato, subros- 
