FRESHWATER SHELLS OF AUSTRALIA. 265 



ing remark : — " Under water and old dead logs, and embedded in 

 mud." On comparing these with the type of V. intermedia, I 

 cannot trace any specific distinction. 



19. ViviPARA Alisoni, Brazier. 



Vivipara Alisoni, Brazier, Proc. Linn. Soc. N. S. Wales, 1879, vol. lii. 

 p. 221. 



Hab. Dalmatia Eiver, Queensland. 



From the brief description of this species, it appears to differ 

 from F! suhlineata in the whorls being only " slightly convex " 

 and " smooth." The latter character, if it apply to the absence of 

 spiral striation, at once distinguishes this species from all the 

 other known forms inhabiting Australia. 



20. YiviPAEA TEiciNCTA, n. sp. (Plate VII. fig. 16.) 



Shell globosely conical, narrowly rimate, moderately solid, 

 greenish yellow, encircled with three slightly raised, dark brown, 

 subequidistant thickish lines, sculptured by the lines of growth 

 and minute spiral lirulse visible only under a lens, most conspi- 

 cuous upon the spire and unequal in strength. "Whorls 5, mode- 

 rately convex, the penultimate somewhat bicarinated by the two 

 raised brown lines, which are considerably paler, yet more promi- 

 nent than upon the last volution ; upon this the uppermost and 

 lowermost lines are more raised than the interjnediate one. 

 Aperture ovately circular, bluish white, the exterior bands being 

 visible only far within, occupj'ing rather more than half the entire 

 length of the shell. Peristome simple, thin; coiumellar margin 

 narrowly reflexed and depressed, united to the termination of the 

 outer lip by a thin bluish-white callus. 



Length 22 millim., greatest diameter 18, above aperture 14; 

 aperture 12 long, 10 broad. 



Hab. North Australia {J. E. Elsey). 



This species, of which there are eleven specimens in the Museum, 

 has the bands in the same position as the three chief ones in 

 V. essingt07iensis. In the latter, however, they are not raised. 

 The whorls are less convex, the umbilicus much smaller, and the 

 substance stouter. The prominence of the lines upon the penul- 

 timate volution, amounting almost to keels, is very peculiar. The 

 apex also is not purplish to the extent it is in V. essingtonensis. 



21. YlVIPARA DIMIDIATA, U. Sp. (Plate VII. fig. 17.) 



Shell ovately conical, thiunish, umbilicated, olivaceous above 



