23G 



OlSr THE TOrOGlJArilY AKD GEOLOGY 



C. D o ni i n i c e n s i s . Gabb, n. s. . : . ~' 



Shell very similar to G. lurida in form, skies sub-parallel, anterior end tapering more than the posterior, base 

 slightly flattened ; inner lip flexuous in advance ; teeth small, very numerous and not extended over the base. 



This shell is closely allied to C. liirida and C. j>*?f?c7?/rrt, but differs from hoth in that 

 its teeth are small, regular, uniform and end ahruptl}' along a straight line. This last 

 character at once separates it from the latter, while the size of the crenulations equally 

 distinguish it from the former. The largest specimen is 1.5 inch long. 



PUSTULAR! A. Swains. . - ' 



P. nucleus. Linn., sp. .. , 



C?/ir/Yca,, Linn., Syst., (12 Ed.), p. 1181. • , . . ■ . 



Four good specimens were found. - . 



CANCELLAPJA. Lam. * ' - 



C. reticulata, Linn., sp., Syst. Nat., (12 Ed.), p. 1190. ' - 

 G. Bavrctti, Guppy, Quart. Jour., Vol. XXIL, p. 289, pi. 17, fig, 11, . . ■ 



C. Moore i. Guppy, Quart. Jour., Vol. XXIL, p. 289, pi. 17, fig. 11. * ' . 



C. Ia3vescens. Guppy, Quart. Jour., Vol. XXIL, p. 280, pi. 17, fig. 12. 



C. brevis. Sby., Proc. Zool. Sec, 1832, p. 52. 



C. tcssellata . Sby., Proc. Zool. Soc, 1832, p. 51. , . 



C. Guppyi. Gabb, n. s. 



Shell sub-globose, spire elevated, about three fifHis as long as the aperture ; whorls eight, the first two nuclear ; 

 suture slightly channeled. Surface finely cancellated by nearly equal revolving and longitudinal ribs ; umbilicus 

 small. Inner lip covered with a strong plate bearing three prominent folds, the lower terminal. These folds are dis- 

 tinctly grooved on top. ' ~ 



Allied to the C. reticulata, this shell can he at once distinguished by its short sub- 

 globose form its channeled suture, its tinel}^ sculptured surface and l)ythe coluraellar 

 plates being broad and gTOoved on top, instead of being thin and acute. 



All of the above species of Cancellaria are rare ; C. Moorei being the only one of 

 which a really good series has been found. 



CERITHIUM. Brug. 



C!. p r i s m a t i c u m . Gabb, n. s. 



Shell large, robust, elevated, v/horls numerous, suture deeply impressed ; surface marked by a deeply square-cut 

 groove below the suture, and one less distinct adjoining the suture ; below these there are a few very large tu- 

 bercles, five or six to a volution, the whole crossed by a few revolving lines, most mai'ked on the upper whorls. 

 Ax^erture with a single large fold on the pillar lip. 



I have but a single fragmentary specimen of this species. It is 2.3 inches long 

 and possesses but five volutions. Originally it must have been considerably over 3 

 inches in length. Its immense tubercles and the deep groove below the suture are 

 unlike any other known species. 



C. ni i c r o 1 i n e a t u m . Gabb, n. s. 



Shell large, turreted, many whorled, sides of whorls flattened, suture linear undulated ; surface marked by a row 



