179 
sitis ; margine superiore atque inferiore leviter convexis, paral- 
lelis, valvulis intus nitidis, pallide aurantiacis ; cardine angusto, 
utraque valva inequaliter bidentato ; dente posticalit brevissimo, 
truncato, subquadrangulari. 
Hab. Insula Zebuensis Philippinarum. 
28. ScintrtuA Forsesi, Desh. S. testa ovato-transversa, soli- 
dula, equilaterali, subsymmetrica, extremitatibus equaliter obtusa, 
intus extusque pallide flavescente, nitida, hyalina, transversim ob- 
solete striata, densissime et minutissime albo punctulata ; punctis 
irregulariter sparsis depressis; margine superiore et inferiore 
rectis, parallelis ; cardine crassiusculo, bidentato, altero uniden- 
tato, dentibus duobus subequalibus acutis minimis ; dente posticali 
brevissimo in valvula sinistra bifurcato ; fossula ligamenti minima, 
angusta. 
Hab. Insula Borneo. 
A la mémoire de Ed. Forbes, ?un des plus éminents naturalistes 
de la Grande Bretagne, et dont la science pieurera longtems la perte 
A jamais regrettable. 
299. ScINTILLA AURANTIACA, Desh. S. testa ovato-transversa, 
turgida, subcylindracea, angusta, inequilaterali, pallide aurantiaca, 
nitida, tenui, hyalina, substriata, punctulis minutissimis distan- 
tibus, albis, irregulariter sparsis, depressis, ornatis, ad marginem 
inferiorem ovoideis ; latere antico paulo breviore et angustiore ; 
umbonibus minimis magis concoloribus ; margine superiore pa- 
rum obliquo, recto, inferiore leviter convexo, subparallelo ; car- 
dine angusto; dentibus duobus inequalissimis in valvula sinistra, 
unico validiore conico, in altera; dente posticali brevissimo, approz- 
imato, conico. 
Hab. Australia septentrionalis. 
30. Scrntrtua Apamst, Desh. S. testa elongato-transversa, ovata, 
equilaterali, inflata, tenui, pellucida, pallide luteo-flava, nitidissima, 
transversim obsolete striata, albo punctatissima, punctulis albis 
depressis, minutissimis, irregulariter sparsis ; umbonibus mini- 
mis, obtusis, oppositis, vix prominentibus ; margine cardinali 
crassiusculo, recto, inferiori recto, parum obliquo ; dentibus in 
valvula sinistra duobus inequalissimis, obliquis; in valvula dextra 
dentibus duobus subequalibus ; dente posticali punctato, brevi sub- 
quadrangulari ; latere antico paulo angustiore. 
Hab. Insula Boholensis Philippinarum. 
A M. Arthur Adams, le savant auteur du Genera des Mollusques 
Vivants, des Mollusques du Samarang, &c. 
31. Scrntitza Owent, Desh.  S. testa ovato-transversa, tur- 
gida, equilaterali, subsymmetrica, tenuissima corneo-alba, hyalina 
vitrea, zonulis angustis opacioribus ad margines notata, nitidissima ; 
lateribus equaliter obtusis ; umbonibus obtusis, brevissimis, oppo- 
sitis, viv prominentibus ; margine superiore recto, angusto, inferiort 
parallelo ; cardine brevi, dentibus minimis duobus inequalissimis, 
