CANTHARIDUS. 147 



C. YOKOHAMENSis Bock. PI. 40, fig. 40. 



Shell imperforate, acutely j^yrainidal, dull white, marked at 

 intervals with irregular dark brown blotches, and the base orna- 

 mented with brown lines radiating from the center (where they are 

 paler, almost orange) to the periphery. Whorls 7, quite flat, 

 spirally ridged ; ridges crenulate or subgranular through being 

 crossed by oblique raised stride ; on the upper whorls there are 

 about 6 ridges, and on the last, which is acutely angled at the mid- 

 dle, they are about 14 in number ; that at the carina consisting of 

 two or three small approximated ones, and hence broader than the 

 rest. Aperture slightly oblique, subquadrate, upper half above the 

 carina shallowly sulcate, lower poxlion smooth; columella white, 

 callous, terminating in an oblique truncation. 



Alt. 18, diam. 15 mill. {Bock.) 



Yokohiivta, J(tpan. 



T. (Thalotia) yokohamensis Carl Bock, Proc. Zool. Soc. London, 

 1878, p. 727, t. 46, f 3. 



C. GiLvus Philippi. PI. 51, fig. 15. 



Shell small, conical, imperforate, transversely granulate-sulcate, 

 white, longitudinally painted with dirty yellowish stripes ; whorls 

 flattened, marginated and prominent at base, the last one angular, 

 encircled by six elevated granose cinguli ; base flat, closely sulcate, 

 scarcely granulate ; aperture depressed, rhomboidal ; columella 

 slightly oblique, cylindrical, scarcely truncate at base. 



Alt. 11, diam. di mill. (Philippi) 



Habitat unknown. 



T. gilvus, Phil., Zeitschr. f. Mai. 1849, p. 157 ; Conchyl. Cab., p. 

 298, t. 43, f 16. 



C. MUNDULA Adams and Angas. Unfigured. 



Shell elevated-conical, subperforate, whitish, obsoletely painted 

 with longitudinal purplish flammules ; whorls plane, concave in the 

 middle, at the sutures with a prominent rounded ridge, transversely 

 lirate, lir?e equal, subgranulose, base concentrically lirate, with 

 radiating stri?e in the interstices ; aperture subquadrate ; lip arcuate, 

 ending anteriorly in an obtuse tooth ; lip obsoletely sulcate within. 



Alt. 12, diam. 9 mill. (Ad. and Ang.) 



Shark's Bay, Western Australia. 



Thalotia muadula Ad. and Ang. P. Z. S. 1864, p. 37. 



