17 
angusto, in medio prominentiore ; dentibus lateralibus lamellosis, 
antico breviore et eminentiore ; sinu pallii brevi, lato, vie inflexo. 
Hab. Port Essington. Coll. Cuming. 
12. Macrra Cuviert, Desh. WM. testa ovato-trigona, tenui, fra- 
gili, tumidissima, cordiformi, inequilaterali, trunsversim irregu- 
lariter et obsolete striata, cuticula tenuissima, pellucida, flaves- 
cente vestita, alba, radiis rubescentibus, roseo maculatis picta ; 
umbonibus tumidis, cordatis, involutis, oppositis, separatis ; latere 
antico longiore, tumido, dilatato, obtuso; lunula magna, ovata, 
concaviuscula, tenue et regulariter striata; latere postico brevi, 
declivi, sensim attenuato, subrostrato, cuneiformi; area angus- 
tissima, elongata, impressa, duplici, sulco marginata ; valvis tenu- 
ibus intus albis, in latere postico rufo-castaneo maculatis ; cardine 
angusto, dentibus lateralibus lamellosis, brevibus, prominentibus ; 
sinu pallit lato, brevissimo, 
Hab. Molluccas. Coll. Cuming. 
13. Macrra #QUILATERALIS, Desh. WM. testa triangulari, equi- 
laterali, tumida, levigata, antice striata, albo-grisea, cuticula fla- 
vescente vestita, antice posticeque angulata, latere antico posticali 
subequante, latere postico plano, lato, angulo acuto circum- 
scripto ; lunula permagna, depressa, areaque levigatis; valvis 
crassis, intus nitidis, albo-griseis ; cardine angusto, crasso, brevi ; 
dente cardinali parvo, dentibus lateralibus crassis, brevibus, an- 
tico longiore ; sinu pallii lato, profundo, semielliptico. 
Hab. New Zealand. Coll. Cuming. 
14. Macrra symmetrica, Desh. UM. testa trigona, equilaterali, 
turgidula, levigata, nitida, ad marginem inferiorem transversim 
sulcata, pallide flavicante, lateribus equaliter declivibus et atte- 
nuatis, superne convexiusculis, margine inferiore regulariter ar- 
cuato ; lunula areaque equalibus, eleganter striato-plicatis, pli- 
cis ad peripheriam abrupte terminatis ; umbonibus minimis, acutis, 
oppositis, antice macula violacea notatis ; cardine angusto, fossula 
brevi, luta, dentibus lateralibus subequalibus, parum prominenti- 
bus ; sinu pallii brevi, angusto, obtuso, horizontali. 
Hab. New Caledonia. Coll. Cuming. 
3. DESCRIPTIONS OF TWO NEW SPECIES OF CLEMENTIA, 
IN THE COLLECTION OF HuGH Cuming, Esa. 
By G. P. DesHayes. 
1. Crementia Strancet, Desh. C. testa ovato-subtrigona, ob- 
lique inequilaterali, tenui, papyracea, candida, translucida, trans- 
versim regulariter intus extusque plicata et obsolete striata, antice 
brevi, lata, obtusissima, postice angustiore, obtusa; umbonibus 
prominulis, parum obliquis ; lunula vie distincta, depressa ; area 
angusta, sublevigata ; sinu pallii elongato, triangulari, ad apicem 
convexiusculo, oblique ascendente. 
Hab. Australia (Moreton Bay). Coll. Cuming. 
No. CCXLIX.—Proceepinecs or THE ZOOLOGICAL SOCIETY. 
