M. M. SCHEPMAN, LAND- AND FRESHWATER MOLLUSCA ETC. 169 



which to compare it, it has~ some superficial resemblance vvith some of the species of Den- 

 drotrochus, as enumerated by PlLSBRV in his „ Guide to the study of Hélices", pag. 143, but 

 the animal does not belong to this group, having no mucous pore, as that genus ought 

 to hâve, according to Hedlev's inquiries (Records of Australian Muséum, Vol. II, p. 90, 

 PL 21), and the conchological characters are quite différent, on doser examination. Only 

 one spécimen. 



6. Papuina lituus Lesson. 



Lesson. Voy. Coq., Zool. p. 309. 



Pfeiffer. Mon. Helic. Vol. I, p. 326 



Pfeiffer. Martini-Chemn. Conch. Cab. Ed. II, Hélix, Vol. I, p. 433, PI. 151, fig. 3, 4. 



Tapp. Canefri. Fauna Mal. New Guinea, p. 138. 



Pilsbrv. Man. of Conch. Ser. -2, Vol. VII, p. 37, PI. 10, fig. 77, 78. 



Robsox. Trans. Zool. Soc. London, Vol. XX, 1914, p. 296, fig. 10. 



New Guinea. Bivak Island, July 10, 1907; Lorentz River, May 4,1907; Sept. 5/12, 1909; Alk- 

 maar, Sept. 20, 1909; Van Weel's Camp, May 27, 1907. 



The spécimens hâve no band at the periphery, being unicoloured, more or less dark 

 yellowish-brown, with rosy peristome (in one bleached spécimen blackish); they scarcely agrée 

 with the quoted figures of PFEIFFER and PlLSBRY, which are flatter, however Tapp. Canefri 

 states a considérable degree of variability in shape, size and colour of shell and aperture. 

 I hâve united the spécimens agreeing in colour, though in shape they approach often the 

 next species, being however generally flatter below. I am the more so inclined to name them 

 lituus, as the genitalia of a spécimen from the Lorentz-river, though of a juvénile appearance, 

 agrée with the figure of RoBSON (1. c. fig. 10), especially in the long pénis retractor, on which 

 ROBSOX lays much stress. I owe the suggestion that the spécimens should belong to P. lituus 

 to Mr. Dautzenberg. 



7. Papuina taumantias Tapparone Canefri. 



Tapparone Canefri. Fauna Mal N. Guinea, p. 141, PL 3, fig. 13, 14. 

 Pilsbrv. Man. of Conch. Ser. II, Vol. VII, p. 39, PL 5, fig. 85, 86. 



New Guinea. Lorentz River, May 4, June 13, 1907 ; Bivak Island, July n, Sept. 6, 1907 ; Sept. 27, 

 1912 (Versteeg leg.) ; Van Weel's Camp, May 27, 1907. 



I am not quite certain that this species has been well-identified, the colour agrées 

 apparently better with that of P. ridibunda Tapp. Canefri; but the shells are with very few 

 exceptions, considerably larger. They vary in colour, in having more or less bands and in 

 the colour of the aperture, which is blackish, rosy or whitish, the shape is variable, the spire 

 being more or less depressed; the genitalia are considerably différent from the figure of Tap- 

 parone CANEFRI (1. c. PL 6, fig. 4), the pénis being club-shaped, without flagellum, and 

 resembles more the figure of those parts, given by ROBSON for P. lituus, (see under that 

 species), but the pénis retractor is so much shorter, that the identity is quite excluded. One 

 should be inclined to think that the figure of TAPPARONE CANEFRI does not represent the 

 genitalia of taumantias , but that they hâve been changed with those of another species, or 

 that the présent species is an undescribed form. For the moment I judge it better to accept 



