OPEAS. 357 



to the Old "World form, retaining 0. subula for the American 

 shells. 



The British Museum possesses specimens received from Button 

 who collected them at Mirzapore ; these measure 13'5 x 3'5 mm. 

 My own collection contains specimens composed of nine whorls 

 and measuring 13 mm. in length. One of these contained four 

 spherical calcareous eggs 0*75 in diameter. Major Peile has 

 collected the species at Bassein and Bombay Island, some of the 

 latter having the periostracuin in a beautiful fresh state, a rather 

 rare occurrence. 



Var. panayensis, Pfeiffer. 



Bulimus panayensis, Pfeiffer, P. Z. S. 1846, p. 33 ; ibid., Mon, 



Helic. Viv. ii, 1848, p. 156. 

 Stenogyra panayensis, von Martens, Preuss. Exp. Ost-Asien, Zool. 



Theil, ii, 1867, pp. 83, 376, pi. 22, fisr. 8; Tapparone Canefri,. 



Ann. Mus. Civ. Geneva, xix, 1883, p. 87; ib., xx, 1884, p. 144; 



Semper, Reisen Arch. Philipp. 2** Teil, iii, 1885, p. 137, pi. 8, 



fig. 15 (shell), pi. 11, fig. 17 (anat.), fig. 21 (dentition) : Wester- 



lund, Vega Exped. Vetensk. Jakt. iv, 1887, p. 187; Hidalgo, 



Jouru. Conchyl. xxxvi, 1888, p. 34 ; Fischer Dautzenberg,. 



Mission Pavfc, iii, 1904, p. 411. 

 Stenogyra (Opeas) panayensis, Pfeiffer Clessin, Nomencl. Helic.. 



Viv. 1881, p. 321 ; von Martens in Max Weber, Zool. Ergebn, 



Reise Niederl. Ost-Indien, ii, 1891, p. 243. 

 Opeas f/racile, var. panayensis, Pilsbry, Man. Conch, ser. 2, xviii, 



1906, p. 131, pi. 18, figs. 1, 2. 



Original description: "Bui. testa imperforata, subulata, tenui, 

 laBvigata, pellucida, cereo-hyalina ; spira elongata, apice obtuso ; 

 anfractibus 8, latis, vix convexiusculis, ultimo | longitudinis vix 

 a3quante, columella brevi, strictiuscula ; apertura ovali-oblonga y 

 basi subangulata; peristomate simplice, recto, margine columellari 

 breviter reflexo, appresso. 



" Long. 11, diam. 2| mill." (Pfnffer.} 



Hab. Ceylon : Point de Galle ( WesterluncT). 



Said to have a general distribution from Indo- China to the 

 Moluccas and Aru Islands. Collected in Ceylon by the Vega 

 Expedition. 



Var. cereus, Reeve. 



Hulimus cereus, Reeve, Couch. Icon, v, Bulimus, 1849, sp. 50I r 



Achatina, pi. 17, fig. 81. 

 Bulimus aracilis, var. ? ceretis, Pfeiffer, Mon. Helic. Viv. 1853 y 



p. 399. ' 

 Stenoc/yra (Opeas) yracilis, var. cereus, Pfeiffer & Clessin, Nomencl. 



Helic. Viv. 1881, p. 321. 

 Opeas gracile, var. cereus, Pilsbry, Man. Conch, ser. 2, xviii, 1906, 



pp. 127, 128, pi. 18, fig. 7. 



Original description : " Shell subulate, umbilicated, thin, whorls 



