48 A MONOGRAPH OP 



Germs— SJJCOl'N'E A— (I>rapernaud.) , 



Shell imperforate, thin, ovate or oblong ; spire very small ; aper- 

 ture large, obliquely oval ; columellar simple, acute, straight ; peristome 

 simple, acute, straight. Animal amphibious, large, heliciform ; tentacles 

 short and thick, upper ones of even thickness toward the apex, thence 

 attenuated , foot broad , lingual teeth like Helix. Succinea putris has 

 1)0 rows of 65 teeth each, — Thomson. 



Inhabits damp places, but rarely enters the water. About twelve 

 known Australian species. All the species are closely allied to each 

 other, and very possibly the number will require reduction. 



1. — Succinea Legrandi — Cox. 



Legrand, Col. for Mon., species 2. 



Shell rimate, thin, transparent, smooth, of a dark horny-yellow, 

 shown with transmitted light ; whorls 4, the first three, forming the 

 apex of the shell, are small and rounded, the last proportionately, 

 enormously dilated and inflated, forming three-quarters the length of 

 the shell ; aperture large, oval ; peristome continuous ; margins joined 

 by a callus \ columellar margin dilated and expanded over the 

 perforation. 



Length 0*23, breadth 0-12 of an inch. 



Habitat. — Kangaroo Point, near Hobart Town ; George's Bay (?). 



Allied to S. Eucalypti, from Tiew South Wales and Southern 

 Queensland. 



2. — Succinea Australis — Ferussac. 



Hist. Moll., pi. XII., fig. 2. 



Cox, Mon,, 1868, p, 88, pi, xv, fig, 7, 7a. 



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



Shell ovately-conical, ^thin, rugosely striated, pellucid, pale horny, 



sometimes marked with darker streaks ; s|)ire conical, acute ; whorls 3^, 



•convex, last forming two-thirds of the length ; columellar sub-callus, 



somewhat slightly receding ; aperture acuminately oval, incumbent ; 



peristome simple, straight. 



Lengch 0'47, breadth 0*32 ; aperture 0*32 long, 0*20 broad, of an 

 inch. 



Habitat. — Widely dispersed ; also islands in Bass Straits. 



When met with it is generally in moist places and in some con- 

 siderable numbers. It is generally constant in character, although 

 variations are sometimes met with. A specimen kindly lent me by Mr. 

 A. Simson, got at George's Bay, is of a pale horny-green with streaks of 

 "brown. It is perhaps but a variety of the Australian aS'. strigata (Pfr.). 



