13 
38. Mexamevus (Traut) mitrauis, H. & A. Adams. . testa 
elongato-ovali, spira producta, apice obtuso, livido, pallide casta- 
nea, fusco-fasciata, levi, nitida ; anfractibus supremis longitudi- 
naliter plicatis, ultimo basi subgibboso ; apertura angusta ; colu- 
mella antice uniplicata, plica spirali; labro acuto. 
Hab. ? Mus. Cuming. 
39. Mevamrus (TRauiA) ExARATuS, H. & A. Adams. WM. testa 
ovata, fusca, spira elata, apice obtuso ; anfractibus planis, trans- 
versim liratis, longitudinaliter decussatim striatis ; apertura ob- 
longa, in medio subdilatata; columella biplicata, plicis validis, 
postica spirali; labro margine acuto, in medio subangulato. 
Hab. Catbalonga, island of Samaar. Mus. Cuming. 
4. Descriptions or New SprciEs OF SHELLS, FROM 
THE CoLLEcTION oF H. Cumine, Esa. 
By M. G. P. Desuayes. 
1. Battssa rnsients, Desh. B. testa ovato-orbiculari, oblique 
inequilaterali, tumida, tenui, intus violacea, epidermide nigro- 
virescente, nitida vestita, in latere antico late sulcata, sulcis 
remotis, ad lunulam sepius inter se conjungentibus ; umbonibus 
prominentibus, erosis, antice inclinatis ; eardine angusto, ob- 
liquo, inequaliter tridentato; dentibus in valva sinistra an- 
gustioribus, mediano bifido, in dextra crassioribus, simplicibus ; 
dentibus lateralibus angustis, postico valve sinistre laminato, 
apice regulariter serrulato. 
Hab. Calamang, Island of Luzon, Philippines. 
2. BATISSA TRIQUETRA, Desh. B. testa trigona, obliqua, ine- 
quilaterali, cuneiformi, levigata, epidermide nigra vestita, de- 
pressiuscula ; margine antico rectilineo, postico valde convexo, 
dilatato, inferiore vix arcuato ; umbonibus profunde erosis ; 
lamina cardinali angusta, dentibus cardinalibus tribus, inequa- 
libus, brevibus, subcanaliculatis ; lateralibus elongatis, angus- 
tis, subequalibus, antico cardine adnato, postico remoto ; valvis 
tenuibus, intus albis. 
Hab. Philippine Islands; Australia. 
3. Barissa propucta, Desh. JB. testa suborbiculari, valde ob- 
liqua, inequilaterali, depressiuscula, crassa, solida, transversim 
late et obsolete plicata, vel subundulata, epidermide polita, atro- 
virescente vestita, intus superne alba, postice inferneque viola- 
cea; umbonibus magnis, productis, antice obliquatis ; cardine 
lato, crasso, valde obliquo, inequaliter tridentato, dentibus ma- 
joribus superne obsolete canaliculatis, lateralibus validis, antico 
crasso, obsolete rugoso vel striato, postico compressiore et paulo 
longicre ; latere antico brevi, rotundato, postico dilatato. 
Hab. Philippine Islands. 
