SCALID^ OF THE WEST INDIA ISLANDS. 19t 



This species is very like the preceding in the contabulate whorls, but is exceed- 

 ingly small ; from the following species it differs in being more elongate, not per- 

 forated, and having the aperture less lobed anteriorly. 



16. ScALA MiCROMPHALA, Morch, n. sp. 



T. minuta, obtecte-perforata, abbreviato-turrita, alba, spira flavescente ; anfr. contabulati sutura 

 profunda; costae xviii in anfr. ultimo, valde reflexse, postice excavatee, auriculis erectis 

 postice canaliculatis paululum reflexis. Apertura circulavis, columella producta lobata. 

 Long. 5 mm.; diam. 3 mm.; aperturse alt. 2 mm. 



Hab. Vieque (Riise) ; spm. unicum. 



8calaria neglecta, Ad. and Reeve, is very like in shape. 



17. SCALA QUINDECEMCOSTATA, Morch, n Sp. 



T. turrita, angusta, lactea, nitida ; anfr. couvexi disjunct! sed rima sutnrali angustissima ; costse 

 regulares, acutse, compressas, validse, candidse, xv in anfr. ult. Apertura subovalis, antice 

 obsolete angulata, labio duplice. 



Long. 8| mm.; diam. 3 mm. 



Hab. St. Thomas (A. H. Riise) ; spm. unicum. 



Differt a Sc. dathratula, Mtg., testa majore, anfr. disjunctis. 



18. ScALA VENOSA, Sowb., PI. 29, fig. 9. 



T. elongato-turrita, imperforata, laevis, lactea ; anfr. 9 disjuncti, varicibus xi in anfr. ult., crassis, 

 valde reflexis, approximatis, ad suturam subangulatis impressione torta. Apertura oblique 

 ovalis. 



Long. 18 mm.; diam. 5 mm. 



Scalaria venosa, Sowb., Thes. I. p. 89, t. 33, f. 72-73. 



Var. a varicibus vix reflexis. 

 Hab. St. Thomas (Swift, Krebs, Riise) ; Puerto Cabello, in the Lagoon (Dr. 

 Prosch) ; Maracaibo (Riise) ; Vieque (Riise). 

 Seal, modesta, C. B. Adams ; Coll. Swift. 



19. ScALA Orbignyi, Nyst. 



T. elongato-turrita, solida, alba, imperforata, sutura profundissima ; costse xiv in anfr. ult. bre- 

 vissimse, ad suturam angulata ; apertura ovalis. 

 Long. 15 mm. ; diam. 6j mm. 



Scalaria elegans, D'Orb., Am. m^r. p. 389, t. 54, f. 1-3 (non Risso). 

 Scalaria Orbignyii, Nyst. Tabl. 1873, p. 48. . 

 Hab. St. Thomas (Krebs). 

 50 



