SCALID^ OF THE WEST INDIA ISLANDS. 203 



33. ScALA FiLARis, Mofch, n. sp. 



T. imperforata, subulata, tenuis, iiitida, striis spiralibus parcis obsoletissimis, albescens, sutura 

 utrinque fascia flava lata; anfr. ult. costis xiv antice obsoletis, ad basin linea elevata circum- 

 scriptus. Apertura subovalis. 

 Long. 10^ mm.; diam. S^ mm.; apertura alt. 3 mm. 



Hah. St. Martin (Krebs, Swift), spra. trita. 



Differt a prsecedente anfr. convexioribus et costis tenuioribus. 



Scalafiisca, Sowb., from Sierra Leone, is not very unlike. 



Sect. ******. Janthoscala. 



34. ScALA MODESTA, C. B. Adams. 



T. imperforata, abbreviato-turrita, flavesceate alba, solida ; anfr. convexi, sutura simplex ; costse 

 regulares crassiusculse xxi in anfr. ult., interstitiis Isevigatis. Apertura ovalis, pariete aper- 

 turali tenuissima ; peristomate postice angulato. 

 Long. 2|- mm.; diam. 1\ mm. 



Scalaria modesta, C. B. Adams, Proc. Bost. Soc. Jan. 1849, p. 5. 



Scalaria modesta, Sowb., Reeve, Iconica, 1873, t. xi, f. 78. 



Hab. Porto Plata (Krebs), spm. unicum ; Jamaica (C. B. Adams), without 

 umbilicus much thicker, more elongate than the following species. Scala concimia, 

 Sowb. Thes. No. 55, f. 66, is much more nearly allied. 



35. Scala inconspicua, Sowb. 



T. obtecte perforata, ovata, solidula, lactea, anfr. convexi, ad suturam impressam depressi, striis 

 spiralibus remotis ; costse regulares lineares xxxi in anfr. ult. Apertura ovalis, columella 

 recta antice subeffusa, peristomate subcontinuo. 



Long. G^ mm. ; diam. 4 mm. 



Scalaria inconspicua, Sowb. Thes, p. 90, No. 30, t. 33, f. 53. 

 Var. a, inflata. Long. 9 mm.; diam. 5| mm, 



Hab. St. Croix, St. Thomas (Swift, Riise) ; Vieque (Riise). The var. from 

 St. Thomas (considered a distinct species by Professor Dunker) is in the collection 

 of Mr. Riise. 



Sect. ******* Opalia, H. & A. Adams, 

 36. Scala (Opalia) crenulata, Kiener. 



T. abbreviato-turrita, imperforata, crassa, lactea, spiraliter subtiliter et confertissime, tseniatim 

 fortiter striata; periompbalo costa crassa obsoleta; lira crassa spirali in anfr. ult. sub sutu- 

 ram evanescens ; sutura canaliculata foveolato-dentata ; costse continuse, in anfi*. ult. evan- 

 escentes, dentes suturales 13 solum substant. Apertura oblongo-ovalis obliqua. 



