INVERTEBRATE PALAEONTOLOGY. 379 



little sinuous above, and thence nearly straight in outline all the way down. 

 The extremity of its canal is broken away in the only specimen seen; but it 

 seems to have been only moderately produced, and comparatively narrow. 



Whether the Indian Cretaceous species referred by Dr. Stoliczka to 

 Tritonidea belong properly to the above section Cantharulus or not, I am 

 hardly prepared to express a very positive opinion, only knowing them from 

 the published'figures; though I can scarcely doubt that they, as well as some 

 of the European Cretaceous forms described under the name Fusus, really do 

 belong to it. 



The genus Cantharus, as here understood, seems to have been introduced 

 during the Cretaceous epoch, and ranged through the Tertiary formations 

 into our existing seas; where it probably nearly or quite maintains its greatest 

 numerical development. The recent species belong both to the typical sec- 

 tion and the Tritonidea groups, but mainly to the latter. Both of these 

 sections also occur in the Tertiary rocks, while nearly all of the Cretaceous 

 species seem to belong to the Cantharulus section. The fossil species are 

 generally yet referred to Fusus, Murex, Buccinum, &c., as was formerly also 

 done with the recent. 



€ a ii til a rii s (C an til aru lus ) Vanglinni, M. & H. (sp). 



Plate.32, figs. 5, a, b. 



Fusus Vaughani, Meek and Havden (1657), Proceed. Acad. Nat. Sci. Philad., IX, 138. 

 Cantharusl raughaiii, Meek (1864), Smithsonian Check-List N. Am. Cret. Fossils, 22. 



Shell oval-fusiform, rather thick ; spire turreted, Fig. 48. 



moderately elevated, composed of six to six and a half 

 convex whorls, which are obliquely a little flattened or 

 very slightly concave above ; last turn tapering quite 

 abruptly into the rather narrow, moderately-produced 

 canal; suture distinct; surface of each volution orna- 

 mented by about fifteen small, equidistant, vertical folds, 

 equaling the depressions between ; crossing these are a 

 series of small, rather elevated, regular, revolving bands-, Canth « rus (Cantharulus) 



Vaughani 



less than the intermediate spaces; over' the entire surface a dorsal view to cor- 

 very fine, obscure, revolving strife may also be seen by the rectsom " *****«» 



J j j ornamentation of too 



aid of a lens, forming, with the fine lines of growth, a faint figures on plate 32. 

 textile marking, entirely subordinate to, and distinct from, the greatly coarser 

 net-work formed by the crossing of the folds and revolving bands ; aperture 



