194 A DESCRIPTIVE CATALOGUE OP THE 



6. ScALA SPURIA, Morch, n. sp. 



T. imperforata, alba, polita, turrita, gracilis; anfr. disjancti, sutura aperta, hians ; costse com- 

 pressse, contimise viii-ix in anfr. ult. suturam versus angulati, pagina antica obsolete malle- 

 ata; apertura adnata, ovata, labio I'ecto, antice producto. 



Long. 14 mm. ; lat. 5^ mm ; alt. aperturse 3 mm. 



Pseudo-scalata, Scala spuria, Chem., Conch. Cab, iv, p. 275, f. 1438 1 



Hab. St. Thomas (Riise, Swift); Anguilla (Hornb.). 



Is nearest allied to Scala muricata, Sowb., Thes. fig. 29. The shell is more 

 elongated, the ribs only feebly angulated and not auriculated by the suture. 



Chemnitz indicates St. Croix as habitat, and states that the operculum is 

 yellow ; but it must be recollected that the figured specimen was from Martini's 

 Collection, and the described specimen from that of Chemnitz. 



7. Scala foliaceicosta, D'Orb., PI. 29, fig. 6. 



T. imperforata, elongato-conica, solidula, albida, nitidula ; anfr. disjuncti xi convexiusculi ; costse 

 vi-vii in anfr. ult., rectse, altse, ad suturam foliacese, auricula iuflexa uncinata. Apertura 

 suborbicularis adnata. 



Long. 14|- mm. ; diam. 5J mm. 



Scalaria foliaceicosta, D'Orb., Cuba, p. 17, ix, f, 26-28. 



Scalaria aculeata, Sowb. Thes., p. p. fig. 35. 



Hah. St. Thomas (Eiise, Cande, Verkingen), St. Croix (Swift), Anguilla 

 (Krebs); Martinique, Guadaloupe (Cande). 



This species is analogous with Scala tenuicostata, Sowb., Thes. fig. 76, from 

 the Philippine Islands. The ribs are auriculate at the sutures, produced and 

 inflected. 



8. Scala spin^-ros^, Morch, n. sp. 



T. turrita, alba, imperforata; anfr. vix disjuncti, ad suturam planati ; costae crassas, in anfr. ult. 

 X continuse, obliquae, compressse, non reflexse, ad suturam spina brevi divergente; ambulacra 

 torta sigmoidea ; apertura subcircularis. 

 Long. YJ mm. ; lat. 3^ mm. 



Hab. St. Thomas (H. Krebs), specimen unicum. 

 Analogue of Scala aculeata, Sowb., Thes. fig. 37. 



9. Scala centiquadra, Morch, PI. 29, fig. 4. 



T. imperforata, abbreviato-turrita, alba, tenuis, pulcherrime decussata; lineaa spirales confertis- 

 simas, alternatim majores et minores, line incrementi approximatse, capillares, sat regulares; 

 anfr. convexi, sutura profundissima ; costse foliaceae et prsesertim postice subreflex^e, ad 

 suturam spina brevi inflexa munitse, pagina antica lineis transversis rugulosa. Apertura 

 subovalis, labro strictiusculo, antice incrassato. 



