CYPK.EA. 27 



margine basiqueluteo; apertura augustiore flexuosa ; utroque 

 latere regulariter dentatis ; dentibus elongatis, interstitiis 

 excavatis." 



Note. — From the description given, I placed this shell here 

 as its probable position in the series. The drawing subse- 

 quently received shows that it is a near ally of bicallosa, if 

 not a very large specimen of the same, with the callosities 

 unformed or partially obliterated. In the drawing, however, 

 there are no traces of the marginal pits characteristic of the 

 A** group. 



83. Sauls;, Gash., (f. 85, 86). — C. testa oblongo-ovata, 

 antice subattenuata, fulvescente fusco punctulata, maculS, 

 magna mediana dorsali, maculisque parvis lateribus casta- 

 neis ; basi subrotunda, pallescente ; apertura angusta, sub- 

 flexuosa, antice latiuscula ; columella postice subgibbosa ; 

 dentibus prominulis, albidis, interstitiis aurantiacis ; extre- 

 mitatibus prominentibus, subreflexis ; marginibus prominen- 

 tibus, subangulatis ; spira profundi umbilicata. 



84. geacilis, Gash., (f. 315, 316, 317).— C. testa, C. Saul* 

 simili, sed magis pyriformi, sulco columellari angusto ; den- 

 tibus tenuioribus, punctis basalibus sparsis, dorsalibus 

 nullis ; macula dorsali nulla. 



Note. — Saulw and gracilis. — There is no danger of con- 

 founding these two shells, although somewhat similar in 

 form. In Saulce there is no distinct columellar groove, it is 

 less pyriform than gracilis, and is marked by a conspicuous 

 dorsal spot. 



85. dndata, Lamh., (f. 131-134). — C. testa subpyriformi, 

 ventricosa; dorso violaceo-castaneo, zonis duabus aut pluribus 

 undulato-albis ornato ; lateribus basique albis, punctis paucis 

 nigricantibus notatis ; dentibus brevibus, validis, labio colu- 

 mellas postice superante, columella postice retrorsa, callosa. 



86. ziczac, Linn., (f. 135-138). — C. testa quam C. undata 

 minori, angustiori, notis linearibus flexuosis, et zonis pallide 

 flavescentibus ; basi et lateribus rufo-aurantiis, nigro vivide 

 punctatis ; dentibus tenuioribus. 



87. ldtea, Gron., (f. 142-144). — C. testa G. undatae 

 simili, magis elongata ; dorso fusco-grisescente, fasciis tribus 

 latis zonato, punctis luteo-fuscis irregulariter creberrime 

 asjDerso ; basi lateribusque creberrime punctatis ; apertura 

 angustiori, rectiuscula ; dentibus tenuioribus ; variat zonis 

 conspicuis, punctis minutis sparsis. 



