190 



Helix (Caracolla) ANCErs. T. lenticular!, pallide cornea acute 

 carinata, supra striata, subtus nitida, vix perforata; anfr. C, supra 

 plauulatis, sutura submarginata ; apertura lunulari, labro simpuci, 

 angulata. Diam. ^ ; alt. -£■$ poll. 



In general form, color, and sculpture it resembles //. acies Fer., but 

 is much smaller and not umbilicated. 



Vitrina pr^estans. T. depressa, fragili, nitida, straminea ; anfr. 

 tribus, striis incrementi et striss volventibus reticulatis ; apertura sub- 

 coarctata. Lat. £ ; alt. f poll. 



The largest species yet described. 



Bulimus atricallosus. T. solida, imperforate, oblongo-ovata, 

 vix striata, sulphurea ; anfr. 7 convexiusculis, ad suturam constrictis ; 

 apertura lunato-ovali, basi sub-effusa, labro albo, reflexo, marginibus 

 callo atro junctis. Long. 21 ; lat. 1 poll. 



Allied to B. vittatus, Dryas, &c, from Philippine Islands. The 

 colors of the aperture are distributed as in B. iostoma. 



Clatjsilia insignis. T. fusiformi, sinistrorsa, solida, castanea ; 

 anfr. 9 convexis, leviter striatis; apertura purpurea, rotundata, la- 

 mellis duabus fortibus postice, quinque tenuibus, per testam apparen- 

 tibus, intus instructs ; labro valde reflexo. Long. 1 ; lat. \ poll. 



Allied to C. Ilacarana, and is the largest and most ponderous 

 species known. 



Cyclostoma pernobilis. T. depresso-conica, apice acuta, late 

 umbilieata ; anfr. 6 subdepressis, striis incrementi conspicuis et striis 

 volventibus rugulosis, ultimo carina costali albida cincto; apertura 

 magna, intus ca?rulescente, labro crasso, expanso, vivide sanguineo : 

 coloribus piceis et lutescentibus superne varie nubeculata ; infra al- 

 bida, lineis piceis volventibus interrupta. Alt. 1 ; lat. 2 poll. 



This superb species closely resembles C. involvulus Sowb. [Said 

 to be C. aurantiaca Schum., figured by Chemnitz ; but it certainly 

 does not agree with his figure, though it does agree with the figure of 

 Kuster, pi. 23, fig. 45.] 



Cyclostoma sectilabrum. T. turrita, spira acuminata, arete 

 umbilieata, brunnea ; anfract. 8 sub-ventricosis, vix striatis, penultimo 

 sub-fibbo ; apertura sub-orbiculari, intus rubescente, peritremate 

 duplici, incrassato, albo, prope angulum posticum canali parvo inter- 

 rupta. Alt. 1 ; lat. | poll. 



Resembles C. altum, Sowb., but has the fissure of the peritreme on 

 the opposite side. C. croceum Sowb., may be a faded specimen of 

 this shell. 



Unio Tavoyensis. T. rotundata, solida, sub-equilaterali, fusca, 

 postice dilatata, sub-angulata ; umbonibus elevatis, una cum latere 



