118 MONODONTA. 



would apply to several related species equally as well as to the one 

 described. A positively recognizable description, or details of differ- 

 ences, or a figure of the species, should be rigidly required." TRYON, 

 in Amer. Journ. Conch., i, p. 83. 



M. CJRCUMCINCTA A. Adams. Testa ovato-conoidea, imperforata, 

 Isevi, nitida, crassa, cingulis rubris, albo viridi maculatis afternunti- 

 bus picta ; anfr. convexis ; columella basi tuberculata, dente magno 

 acuto terminate ; labro duplicate, intus lirato. (A. Ad.) 



Id. of Ticao, Philippines, on stones at low water. (Curaing.) 



A. AD., P. Z. S., 1851, p. 175. 



M. TUBERCULATA A. Adams. Testa ovate-conoidea, imperforata, 

 crassa, viridescenti, cingulis tuberculorum oblongorum violaceorum 

 ornata; anfr. convexis; columella basi trituberculata, canali paral- 

 lelo instructa, dente prominente acuto terminata ; labro duplicate, 

 intus lirato. (A. Ad.) 



Habitat unknown. 



A. AD., P. Z. S. 1851, p. 175. 



M. RUGULOSA A. Adams. Testa ovato-conoidea, depressa, atro- 

 fusca, fasciis latis luteo-albis irregulariter picta, cingulis rotundatis 

 interrupts ornata; columella basi bituberculata, canali parallelo 

 instructa, dente magno acuto terminata ; labro duplicata, intus 

 lirato. (A. Ad.) 



Habitat unknown. 



A. AD., P. Z. S., 1851, p. 175. 



M. EXIGUA A. Adams. Testa parva, conoidea, umbilicata, 

 albida fusco variegata, cingulis trans versis granulosis interstitiis 

 longitudinaliter liratis ornata ; anfr. parum convexis, ultimo sub- 

 angulato ; umbilico recto, dente valido acuto terminata ; labro intus 

 sulcato. (A. Ad.) 



Japan. (Siebold.) 



A. AD., P. Z. S., 1851, p. 176. 



May be a JEuchelus, instead of a Monodonta. 



M. SPILOTA A. Adams. Testa parva, ovato-depressa, conoidea, 

 imperforata, Isevi, nitida, viridi, maculis pallidus triangularibus ; 

 columella plana, alba, canali parallelo instructa, dente obtuso 

 terminata ; labro duplicate, intus lirato. (A. Ad.) 



Habitat unknown. 



