138 OPEAS JAVANICUM. 



4. 0. JAVANICUM (Reeve). PI. 12, figs. 14, 16; pi. 16, figs. 

 81, 88 ; pi. 22, fig. 9. 



Shell oblong, turrited; whorls 8, rounded, obscurely, very 

 finely, rudely striated ; columella thin, attenuately truncated ; 

 aperture small. Pale straw color. (Rve.) . 



Java: Wonosari (Zollinger). Flores at Larentuka and 

 the neighboring island of Adenare. Moluccas on the islands 

 Ternate and Amboina (Martens), Sumatra, China, Japan, 

 Hawaiian Is., Mauritius, etc. 



Achatina javanica RVE., Conch. Icon, v, pi. 17, f. 79 

 (1849). PFR., Monogr. iii, p. 493. Stenogyra j., MARTENS, 

 Ostas. Zool., Landschn. pp. 30, 377, pi. 22, f. 11 ; Sitzungsber. 

 Ges. Nat. Freunde zu Berlin, 1877, p. 105 ( Japan). 

 Hapalus j., MARTENS, Beschalte "Weichthiere D. Ost-Afr. p. 

 130. ? Opeas davulinum (Pot. Mich.) BTTG., Nachrbl. d. D. 

 Malak. Ges. 1891, p. 179 (Takao, Formosa; Canton, Hong- 

 kong, Amoy, Hainan, etc., China; Nagasaki and Hakodate, 

 Japan) ; Bericht Senck. Naturforsch. Ges. Frankfurt, 1891, 

 p. 271 (includes S. javana Marts.; Amboina group of the 

 Moluccas; Mauritius, Ceylon, Java, Flores, Adenare, Ternate, 

 Cebu, Mindanao). 



Stenogyra striatissima Gredler, which I have included in 

 Prosopeas (p. 35), should be compared with 0. javanicum. 

 I suspect that it is either identical or very closely related. 



Reeve's figure is copied, pi. 16, fig. 88. An average Javan 

 specimen measures, length 9.5, diam. 3.4 mm., aperture 3.2 

 mm., whorls 7y 2 . The stria tion is very fine, crowded and 

 thread-like, somewhat arcuate and under the compound mi- 

 croscope, weak spirals may be seen in unworn shells. 



From Sumatra, at Batu Sangkar in the Padangsche Boven- 

 land, specimens which I refer to 0. javanicum were brought 

 by Messrs. Harrison and Hiller in 1891. One is figured, pi. 

 16, fig. 81, the specimens being not quite full grown. The 

 shell is imperforate or very narrowly rimate, conic-turrite, 

 thin corneous, opaque, very densely and finely, sharply, arcu- 

 ate striate, the striae superficially cut by impressed spiral lines, 

 which are very fine and most distinct on the penultimate 

 whorl. Whorls 7 to 7 1 /->, moderately convex, parted by a 



