SCALID^ OF THE WEST INDIA ISLANDS. 199 



24. ScALA EBURNEA, Pot. and Mich., PI. 29, fig. 10. 



T. turrita, tenuiuscula, imperforata, albida, nitida, striis spiralibus obsoletissimis parcis ; anfr. 

 convex!, sutura impressa ; costae xii-xiii in anfr. ult. argutae, margine reflexo prsesertim ad 

 suturdm ; ambulacra angusta toi'ta. Apertura subovalis, pariete obtecto ; labio antice 

 incrassato. 

 Long. 20 mm. ; diam. 1^ mm. (spm. permagnum). 



Scalaria eburnea. Pot. and Mich. 1838, Cat. Douai, p. 344, t. 31, f. 1-2. 

 Scalaria fragiUs, Gray, Hanley, Textbook, 1842, pp. 63, 158; Sovvb., Thes. 1, 

 p. 88, t. 33, f. 164, 65, 66. 



Scalaria albida, D'Orb., Cuba, p. 17, t. 20, f. 24, 25 (1853). 

 Scalaria ligata, C, B. Adams, Contr. No. 4, p. 67'? 



Var. a. Angusta. 

 Hab. Cuba (Auber); St. Thomas (Dr. Ravn, Bardenfl., Eiise, Krebs); St. Mar- 

 tin (Krebs); Trinidad, Barbadoes (Krebs) ; Anguilla (Hornb.); St. Vincent (Sowb.). . 

 Var. (3. "? Costis membranaceis valde reflexis. 

 Long. 14 mm. ; diam. 65 ram. 

 Hab. Nassau (Krebs). 

 Var. y. \ Pumilio. 



Long. 7i mm. ; diam. 4 mm, 

 Hab. Porto Plata, St. Barth. (Krebs). 



25. ScALA LAMELLOSA, Lam, 



T. imperforata, clavata; anfr. convexi sutura impressa; costae compressae acutse, xii-xiii in anfr. 

 nit. ; ambulacra fere recta. Apertura subovalis, labio antice angulato. Color albus, fascia 

 suturali, periomphali et maculis intermediis fuscis. Operculum flavum, ovale, nucleo excen- 

 trico, striae incrementi capillai'es. 



Long. 40 mm,; diam, 16 mm. (spm, giganteum). 

 Long, 31 mm,; diam. 14j mm, (spm, typ.). 



Yar. a, unicolor, castanea ; Kien, spec. gen. t. 3, f. 7\ 



Yar. (3, alba, fascia suturali fusca. 



Var. y, alba, fascia suturali et basali (supra lineam) fuscis. 



Yar. S, alba, fascia suturalis et basali (infra lineam) fuscis, 



Yar. e, costae reflexa, crassitil varia et alternatim non contiguse. 



Yar. ^, costse ultimse tres latissimse confluentes ; lat. 8 mm.; long, testae 

 30 ram. 

 Turbo clathrus, L, S, N. xii, p, 1237, n. 631, non S, N, x. 

 Scalaria pseudoscalaris, Brocchs, D'Orb., Cuba, p, 15, n. 191. 

 Scalaria clathrus, L,, Sowb., Thes, p, 101, f, 134, 131, 132, 

 Hab. Very common throughout the West Indies — St. Thomas, St. Jean, Pas- 



