65 
lariter convexo ; lunula magna, angulo obtusissimoe superne cir- 
cumscripta, plicata, macula elongata, rufescente notata, plicis 
latis, abrupte terminatis ; area magna, obsolete plicata, angulo 
obtuso circumdata ; umbonibus acutis, brevibus, oppositis ; car- 
dine angusto; dente cardinali tenui, brevissimo, sub angulo recto 
aperto; fossula lata explanata ; dentibus lateralibus compres- 
sis, longiusculis, equalibus ; sinu pallit brevi, lato, obtuso, sub- 
trigono. 
Hab. New Zealand. 
14. Macrra opposita, Desh. M. testa parvula, transversa, 
trigona, turgidula, subequilaterali, transversim obsolete sul- 
cata, grisea, radiis numerosis rufis, pallidis, interruptis picta, 
intus violaceo transversim zonulata; umbonibus acutis, brevi- 
bus, oppositis, apice violaceis; latere antico posticoque equaliter 
declivibus, angulo obtuso equaliter distinctis ; lunula areaque 
planulatis, tenue striatis, macula violacea notatis ; cardine an- 
gusto ; fossula cardinali minima, angusta, dentibus lateralibus 
compressis, prominentibus, postico breviore; sinu pallu lato, 
satis profundo, obtuso, superne parum dilatato. 
Hab. Luzon, Philippines. Coll. Cuming. 
15. Macrra rapiouaTa, Desh. WM. testa trigona, obliqua, in- 
e@quilaterali, turgida, cordiformi, sub epidermide flavescente, 
tenui alba, intus extusque eleganter rufo-rubescente radiata ; 
latere antico paulo breviore, late rotundato, postico rapide de- 
elivi, attenuato; lunula .areaque plano-concaviusculis, regula- 
riter striatis ; umbonibus tumidis, prominentibus, parum obh- 
quis ; cardine crassiusculo, fossula profunda, dentibus laterali- 
-bus laminatis, prominentibus, triangularibus ; sinu pallii brevi, 
oblique semicirculari. 
Hab. Zebu, Philippines. Coll. Cuming. 
16. Macrra SCALPELLUM, Desh. WM. testa transversa, angusta, 
late trigona, equilaterali, subsymmetrica, superne equaliter de- 
clivi, anterius tantisper obtusiore, utroque latere attenuata, in- 
ferne regulariter convexa, albo-cornea, nitidissima, area lunula- 
que tenue plicatis ; cardine in medio dilatato, fossula basi pro- 
minente, trigona, lata; dente cardinali parvo, obliquo, denti- 
bus lateralibus lamellosis, antico paulo longiore; sinu pallit 
elongato. 
Hab. New Zealand. 
17. Macrra sericra, Desh. WM. testa ovato-transversa, tumida, 
tenui, subequilaterali, postice paulo hiante, epidermide sericea, 
tenue striata vestita, levigata substriatave, latere antico paulo 
brevior'e, compressiusculo, rotundato, postico paulo magis atte- 
nuato, margine inferiore regulariter arcuato ; umbonibus 
acutis, brevibus, apice violaceis; area planulata, viv convexa, 
suleata, lunula equaliter sulcata, in medio carinata; cardine 
No. CCLXIV.—Procrenpines or THE ZOOLOGICAL SOCIETY. 
