SCALIDH OF THE WEST INDIA ISLANDS. 203 
33. SCALA FILARIS, Mérch, n. sp. 
T. imperforata, subulata, tenuis, nitida, striis spiralibus parcis obsoletissimis, albescens, sutura 
utrinque fascia flava lata; anfr. ult. costis xiv antice obsoletis, ad basin linea elevata cireum- 
scriptus. Apertura subovalis. 
Long. 104 mm.; diam. 34 mm.; apertura alt. 3 mm. 
Hab. St. Martin (Krebs, Swift), spm. trita. 
Differt a precedente anfr. convexioribus et costis tenuioribus. 
Scala fusca, Sowb., from Sierra Leone, is not very unlike. 
Sect. ******_ Janthoscala. 
34. SCALA MopEsTa, C. B. Adams. 
T. imperforata, abbreviato-turrita, flavescente alba, solida; anfr. convexi, sutura simplex ; costz 
regulares crassiusculz xxi in anfr. ult., interstitiis levigatis. Apertura ovalis, pariete aper- 
turali tenuissima; peristomate postice angulato. 
1 . ] 1 
Long. 24 mm.; diam. 1} mm. 
Scalaria modesta, C. B. Adams, Proc. Bost. Soc. Jan. 1849, Po: 
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 concinna, 
Sowb. Thes. No. 55, f. 66, is much more nearly allied. 
30. SCALA INCONSPICUA, Sowb. 
T. obtecte perforata, ovata, solidula, lactea, anfr. convexi, ad suturam impressam depressi, striis 
spiralibus remotis ; costs regulares lineares xxxi in anfr. ult. Apertura ovalis, columella 
recta antice subeffusa, peristomate subcontinuo. 
Long. 6} 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, *****%*, Qnalia, H. & A. Adams. 
36. ScALA (OPALIA) CRENULATA, Kiener. 
T. abbreviato-turrita, imperforata, crassa, lactea, spiraliter subtiliter et confertissime, teeniatim 
fortiter striata; periomphalo costa crassa obsoleta; lira crassa spirali in anfr. ult. sub sutu- 
ram evanescens; sutura canaliculata foveolato-dentata; coste continu, in anfr. ult. evan- 
escentes, dentes suturales 13 solum substant. Apertura oblongo-ovalis obliqua. 
