120 ' KUTIIIM' 1 . 



ii BUMETA, M'.rch. 1*68. 



Lateral ami marginal teeth of the radula finely pectinate. C. 

 MI, 1 1, v. M'-rch. A'--/-//" rn Seas. 



Bubgei u LSOCOCHLIS, Dtmker and Metzger, 1*7 J. 



Shell HiiMral. elongated. glBDOfle, canal twisted. L. GRAN06A, 



The dentition of tlii- BpeciOB i> a> near that of Trirlmfrnjiis as 

 ind von Martens has put it in Trichotropida- : but the 

 athnitie- of the -hell appear to he Cerithid. 



Genoa CKIMTKLLA. Morris and Lyeett. 1850. 



Shell >mall. -inooth, with >har]> spire and flattened whorls, the 

 laM whorl hirrt'. veiitrirosr: aperture elongatetl, ohli.pR-, narrow, 

 terininatiiiLf in a very >h..rt canal, slightly turned outwards, lip 

 thin, coluniella >niooth. i'ounde<l, >ul>rerlected at the l>a-e. 



i \. Morri* and Lyeett iXfrnrt. n,nl Sifst. (.'nnch. y t. 60, f. 

 .Jura ie. Kut/fnml. 



Section Ti-i;iri:i:. IMette, 1856. 



Shell formed like Artinm, the last whorl eyliixlrical, larire ; ap-r- 

 ture loiiL r . the lip thin. >iniple, dtxviidiiiir as far antei'iorly as the 

 eanal ; canal huiir. thin, tule-like. 



Ml. A, Tiette. .Illl'aic. 



Co."/' ///;' r, Meek, 1863, may prolwMy be referred here. 



n l'n:ri.\. I'iette. }^1. 



Shell ehuiL'-ated : coluniella >t i-aiiiht with a rudimentary umbilical 

 groove near the |, : ,. M . : ,,,iter lip n..t<-hed at the suture; l>a>e of 

 aperture with a -li-ht canal, or rounded and entire, depending upon 

 it- aj^. 



: M.I L00A, I'iett,. (Struct. <><! N//N/. Conch., \. ii. f. 56). L'l 



p. .Inraic to Cn-iaee,,u- : ]-]m^^ . l,n]\n. 



ii EU8TOMA, Piette, L856. 



Shell when yoiin- re-rmblin-j- ( 'erithiuni : in the adult there i- a 

 r. nam-u. ii.-arly -trai-ht anterior canal, and an a.-cendiiiLr 

 ehaiinel. the lip i- dilated, and there i- a lar-e >preadin_ir 

 cohiinellar callosity. 



i. I'ieti,- I'l. i!i. fig, ; . Jurassic, 

 Qenni TKinnns. Deehayee, L824, 



11 elongated, ODlStral, L r ranular: whorl- nunierou>; aperture 



