196 A DESCRIPTIYE CATALOGUE OF THE 



Sect. •«■**. 



18. ScALA PERNOBiLis, Fischer and Bernardi, 



T. imperforata, tenuis, alba, abbreviato-conica ; anfr. v-vi convexi, lamellis copiosis elevatis, 

 recurvis, superne subaugulatis, ad marginem tenuibus simplicibusque ; anfr. ultimus dila- 

 tatus, permagnus, non solutus. Apertura rotunda, columella incrassata, callosa, umbillcum 

 tegens, peristomate crasso, lamella valida, superne producta et angulata. 

 Long. 40 mm. ; lat. 33 mm. 



Scalaria pernobilis, Fisch. and Bern., Journ. de Conch. 1854, p. 293, t. 8, f. 23. 



Hab. Guadaloupe (Cora. Bean). 



The only known specimen was found on a fisherman's bow-net, together with 

 Pleurotomaria quoyana, Crosse, and like this inhabited by a hermit crab. It is 

 now preserved in the " Musee des Colonies" in Paris. 



A very similar species, but very thick in the shell and fossil, is in the Jardin 

 des Plantes and was obtained as the type specimen. 



14. ScALA OCCIDENTALIS, Nyst. 



T. imperforata, tenuis, alba, loevis; anfr. subsoluti, ad sutnram depressi; costas foliacese, obliquse, 

 continuae, ad suturam angulatse, hue illuc subauriculat^, postice excavatse, xiii-xiv in anfr. 

 ult. Apertura reniformi-ovalis. Operculum flavum. 

 Long. 13 mm.; diam. 6;^ mm. 



Scalaria tenuis, Sowb., Proc. Zool. Soc. 1844, p. 110 (non Gray), 



Sowb., Thes. p. 87, fig. 67. 

 Scalaria occidentalism Nyst, Tableau 1873, p. 48. 



Hah. St. Thomas (Hornb., Kiise, Krebs, H. Kock.), Nassau (Krebs); Crabben 

 Island (Unger). 



Var. AURiTA ; in anfr. ult. costis xi crassiusculis. 

 Long. 11 mm.; diam. 5 J mm. 



Hab. St. Thomas (Riise). 



This variety reminds rae of Scala foUaceicosta, D'Orb. 



15. Scala erectispina, Morch, n. sp. 



T. minuta, imperforata, elongata-turrita, solidula, alba; anfr. contabulati, suturis excavatis 

 profundis; costse xiii in anfr. ult. postice excavatse ad suturam, auriculis acutis erectis 

 subreflexis vel tortis, postice excavatis uti canaliculatls. Apertura circularis, labio antice 

 incrassato, producto, torto. 

 Long. 4f mm.; diam. 2^ mm. Aperturse alt. 1;^ mm. 



Hab. St. Thomas (Riise). 



