10 A MONOGRAPH OF 



elevated ; whorls 5, the last rather inflated, not descending ; coarsely and 

 widely transversely striated throughout with rib-like strise.. the interstices 

 being again finely striated ; aperture oblique, almost round ; peristome 

 simple, not reflected ; columellar margin dilated. 



Diameter, greatest 0-31, least 0-25 ; height, 0-12 of an inch. 



Habitat. — Mount Wellington, Brown's River to Recherche Bay, 

 Circular Head to Tamar River, around Launceston, Chudleigh, Mount 

 Bischofi", Macquarie Harbour (?). 



Somewhat variable, both in size, colouration, and even sculpture, 

 although as a rule the same general aspect is present. In colour 

 it varies from a greenish white to dark brown, and even occa- 

 sionally assumes a bronzed appearance ; the sculpture is more or less 

 prominent in picked specimens, but all have a granular, decussate 

 sculpture, witJi distant prominent striae. Specimens collected on the 

 densely-timbered banks of the Leven River are fully twice the size of 

 the typical from Mount Wellington, and on this account Dr. Cox has 

 formed them into a distinct species under the name of Bu Cani. This 1 

 retain for future observation, although I have but little doubt it is but a 

 local variation in size \ other slight variations have occasioned the for- 

 mation of the following — Milligani, sompulus, and Floodi ; the spire is 

 occasionally a little more elevated or depressed than in normal examples, 

 and in a specimen collected at the foot of Mount Welling con the shell 

 was flat with the suture much indented. This Mr. Brazier has named 

 Pascoei. I have united these so-called species, after the examination of 

 some hundreds of specimens from numerous localities, which clearly 

 show they are variations of one form, and, as before remarked, it is 

 quite possible that the preceding, present, and five following species are 

 but extreme variations of one generally distributed form. The specimens 

 named by Dr. Cox as coepta are but young individuals, wanting the 

 developDjent of the last whorl. 



11.— Helix ( ) Du Cani.— Coa;. 



Legi-and, Col. for Mon. , species 56. 



Shell widely umbilicated, convexly depressed, transversely, finely, 

 obliquely, granularly striated, and longitudinally regularly striated with 

 slightly waved striae, thin, transparent, pale yellow-brown ; whorls 6, 

 rounded ; suture deep ; spire slightly raised ; peristome simple, thin, 

 straight, margins approached ; columellar margin not dilated or reflexed. 



Diameter, greatest 0-78, least 0-G2 ; height, 0-50 of an inch. 



Rahitat.—]^OYt\l-^Y^^s>t Coast, from Tamar Heads to Table Cape. 



I found this sj^ecies (?) in considerable numbers under decaying 

 masses of vegetation in the thick, almost impenetrable undergi'owth on 

 the banks of the Leven River, in company with gigantic specimens of 



