44 A MONOGRAPH OF 



according to Mr. HempMU (Quarterly Journal of Conchology, February 

 1876), lias been obtained in various parts of Northern America, and 

 that investigator obtained it quite abundantly at the White Pine 

 mining district of Nevada, at an elevation of 8000 feet. It is an open 

 question as to whether it has been introduced into that country, or is 

 indigenous. Mr. Brazier infurms me that he found it at Norfolk Island 

 in 1865 in great plenty, under stones and loose wood in the old Gaol 

 yard, and conjectures that it and others that have become so thoroughly 

 acclimatised throughout Australasia, were in all probability introduced 

 in cases with plants. 



Another European species has been introduced into New South 

 Wales ; it is the Helix nitada ( Midler ) — Cox, 3Ion, 1868 — and also 

 Bulvmus junceus [Old.) from the New Hebrides. It is well to note 

 these alien acquisitions to our terrestrial mollusca, as in course of time 

 they may modify or supersede the indigenous forms. I may state that 

 two of the most abundant freshwater shells in this island are introduced 

 European species, y\z., Limncea peregra ( L. Hoharljensis — Tenison-Woods) 



and Lmincea stagnalis (L. Tasmanicus — TenisonhWoods ). 



tu.. 



/• 



Genus-BULIMUS-r'S'coi^oZi. ; 



Shell oblong or turreted ; aperture with the longitudinal margins 

 unequal, toothless or dentate ; columellar entire, revolute externally, or 

 nearly simple ; peristome simple or expanded. 



Animal like Helix. 



Bulimi are found in most parts of the world, the largest and most 

 beautifully coloured in the tropics. There are nineteen species 

 enumerated as Australian. 



1. — BuLiMUS ( ) DuFRESNi — Leach. 



Mis. Zoo., p. 153, pi. cxx. 



Wood, Index Testa,, Hanley, 1856. pi. Vii, fig. 28. 

 Cone. Icon., Eeeve, sp. 219. 

 Chenu, Manual Con., vol. 1, p. 438, fig. 3224. 

 Legrand's Col. for Mon., sp. 1. 

 ' Helix — T)ufresni. 



Fer. Hist,, pi. cxiii.,fig. 1-3. 



Shell imperforate, ovately oblong, rather solid, shining and almost 

 smooth, although marked with longitudinal, irregular, rugose lines of 

 growth, and faintly granulate all over, dark maroon-brown, encircled by 

 a narrow dark-brown, almost black, spiral band, flanked by much paler 

 ones ; spire obtuse j suture crenulated below ; whorls 5, slightly convex ; 

 aperture oval, very slightly oblique, pale violet-brown within ; peristome 



