216 CAECUM. 



C. AURICULATUM, cle Folin. PL 66, fig. 58. 



Shell thin, hyaline, cylindrical, a little curved, white, septum 

 with rounded projection, mouth encircled by a rib. 



Length, '075 inch. Mediterranean Sea. 



This is C. drier eghinianum, Brusina, and perhaps Odontidium 

 glabrum, Cantr. 



C. GLABRIFORMTS, Carp. 



Like C. glabrum, but the septum more tumidly mamillate, 

 nearly hemispherical. Length, '073 inch. 



Mazatlan ; San Diego, Gal. 

 The shell is said not to differ from C. glabrum. 



C. ACHIRONA, de Folin. PI. 66, fig. 59. 



Rather solid, yellowish, shining, transversely very minutely 

 striated, towards the aperture a little inflated and whitish, aper- 

 ture a little oblique, subcontracted below, septum large, mamil- 

 lated, subungulate. Operculum slightly convex, doubly margined. 



Length, *1 inch. Bahia, Brazil. 



C. SOMERI, de Folin. PI. 66, fig. 60. 



Elongated, conical, smooth, whitish, almost opaque, aperture 

 not contracted nor oblique, septum projecting, mamillate at the 

 apex. Length, *095 inch. 



Pernambuco, Brazil. 

 Unfigured Species, and those of which the Figures are 



inaccessible to me. 



C. CORNEUM, Dkr. Brazil. 



C. ORCUTTI, Dall. San Diego, California. 



C. DECURTATA, Monts. Sicily. 



C. PARVULUM, C. MTNUTUM, C. IMPERFECTUM. C. VALIDUM, C. COM- 



PLANATUM, C. MASSILTENSE, C. MODESTUM, C. CARMENENSE 

 (I. Carmen), C. CUCCINA (Vera Cruz), C. ORIENTALS (7. 

 Rhodes), C. VERACRUZ ANUM (Mexico), C. STRIGOSUM (Rio. 

 Janeiro), C. BIMAMILLATUM (La Guayra), C.CIRCUMVOLUTUM 

 (Aspinwall), C. SUBFLAVUM (Cape York, Australia), C. suc- 

 CINEUM (Cape York, Australia), all of de Folin. 



C.coRRUGATULUM,C.REVERSUM,and C. TERES, Carpenter. Mazatlan. 



C. SUBQUADRATUM, Carp. Port Elizabeth. 



C. BIMARGINATUM, Carp. Singapore. 



C. ARMORICUM, Folin. Gulf of Gascony. 



C. INCOMPTA, Monterosato ( C. glabrum, Brusina). Mediterranean. 



