135 



to place it near that species. B. sinistrosics is a very different 

 type of shell to JBaJea australis, Forbes, which is a decided 

 connecting link with Clausilia, whilst the present species is a 

 divergence from the typical Bnlimi towards JBalea. 



Bttlimtts IKDUTUS, Menlce, var. pallldus, nor. 



The large Bulimus so profusly abundant over the Bunda 

 Plateau agrees so accurately in its dimensions with B. indutus of 

 Western Australia that, despite the differences of coloration, I 

 am constrained to regard them as of one species. Our shell has 

 a white semi-fossilized ajipearance, and its columella is grayish- 

 white, and the aperture is dull- white within. Menke describes 

 the type as fulva albida, and the aperture as white within. 

 Cox gives it a yellow epidermis, and the columella flesh- 

 coloured. 



The classification of the Australian Bulimi adopted by Dr. 

 Cos places B. dux and B. indutus in different sections, an 

 arrangement with which I cannot agree, as I believe that the 

 two species are not more distantly related than B. indutus is 

 to the variety above described. B. Mastersi belongs to the 

 same natural group. 



B. indutus var. pallidus is widely diffused over the Bunda 

 Plateau, and the dead shells are to be met with in such 

 prodigious numbers in many places that a barrow-load could 

 be gathered within an hour, and over the less sterile portions 

 a foot can hardly be set down without crushing one. "Westward 

 it extends to the Boe Plains, and eastward to Coymbra, and 

 inland from thence for a few miles. It does not inhabit the 

 country east from Powler's Bay. 



Plecotbema cii.ia.ta, nov. spec. PI. v., figs. 7a 7b. 



Shell imperforate, fusiformly ovate, solid ; shining brown- 

 black, with a narrow light-coloured band near the suture, and 

 between which is a reddish-coloured one. Surface ornamented 

 with incised longitudinal lines and regularly wrinkled 

 transversely ; at the intersections of the lines, punctatedly 

 impressed and ciliated ; the cilia, yellowish-brown, filiform. 

 Sjnre conoidal, rather pointed. Whorls seven, scarcely convex, 

 with one shallow groove near the suture, the last forming 

 three-fourths of the total length. Pillar with a posterior white 

 tubercular tooth, and an anterior compressed .spiral plait ; 

 columella with a similar plait, but smaller ; outer Tin with two 

 tubercular teeth. Columella expanded and reflected at the lower 

 angle to form a false umbilicus. Length, - 3 ; breadth, - 16. 



Animal with the foot and neck bluish-grey ; muzzle with 

 dark annular streaks, short, broad, and flattened, slightly 

 sinuated in front ; tentacles with dark annular coloration, 

 short, not extending to front of muzzle, pointed, dilated at the 



