194 A DESCRIPTIVE CATALOGUE OF THE 
6. ScaLa spuRIA, Mérch, n. sp. 
T. imperforata, alba, polita, turrita, gracilis; anfr. disjuncti, sutura aperta, hians; costs com- 
presse, continu viii-ix in anfr. ult. suturam versus angulati, pagina antica obsolete malle- 
ata; apertura adnata, ovata, labio recto, antice producto. 
Long. 14 mm.; lat. 53 mm; alt. apertura 3 mm. 
Pseudo-scalata, Scala spuria, Chem., Conch, Cab. iv, p. 275, f. 1438? 
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., Pl. 29, fig. 6. 
T. imperforata, elongato-conica, solidula, albida, nitidula; anfr. disjuncti xi convexiusculi; coste 
vi-vii in anfr. ult., rectee, alte, ad suturam foliaceze, auricula inflexa uncinata. Apertura 
suborbicularis adnata. 
Long. 144 mm.; diam. 5} mm. 
Scalaria foliaceicosta, D’Orb., Cuba, p. 17, ix, f. 26-28. 
Scalaria aculeata, Sowb. Thes., p. p. fig. 35. 
Hab. St. Thomas (Riise, Candé, Verkingen), St. Croix (Swift), Anguilla 
(Krebs); Martinique, Guadaloupe (Candé). 
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&-ROSH, Morch, n. sp. 
T. turrita, alba, imperforata; anfr. vix disjuncti, ad suturam planati; costz crass, in anfr. ult. 
x continue, oblique, compressze, non reflexee, ad suturam spina brevi divergente; ambulacra 
torta sigmoidea; apertura subcircularis. 
Long. 7} mm.; lat. 3} mm. 
Hab, St. Thomas (H. Krebs), specimen unicum. 
Analogue of Scala aculeata, Sowb., Thes. fig. 37. 
9. SCALA CENTIQUADRA, Morch, Pl. 29, fig. 4. 
T. imperforata, abbreviato-turrita, alba, tenuis, pulcherrime decussata; line spirales confertis- 
sime, alternatim majores et minores, line incrementi approximate, capillares, sat regulares ; 
anfr. convexi, sutura profundissima; cost foliaceze et preesertim postice subreflexe, ad 
suturam spina brevi inflexa munite, pagina antica lineis transversis rugulosa. Apertura 
subovalis, labro strictiusculo, antice incrassato. 
