HELICID^E. 179 



tremely large and inclining a little obliquely ; the two 

 upper ones very small, and ending rather obtusely ; 

 aperture covering three fourths of the shell ; pillar 

 spiral, visible internally to the end or apex. 



Dr. Fleming observes, " A variety of this shell 

 sometimes occurs with a thickened expanded sub- 

 reflexed white lip." (Brit. Anim. 267.) I think this 

 must be a mistake, and should have been a remark ap- 

 pended to Limnceus pereger : it was probably copied 

 from H. putris of Maton and Racket, which is the 

 latter species ! (See Linn. Trans, viii. 229., and Mont. 

 Test. Brit. Sup. 139.) 



57. 2. Succinea Pfeifferi. Slender Amber Snail. 



(t. 4. f. 74.) Shell oblong, slender, transparent, 



shining, internally pearly; mouth very large, 



elongate-acute, very oblique; outer lip thin. 

 Succinea putris. var a. Jeffreys, Linn. Trans, xvi. 



325. 505. 

 Succinea amphibia b. Pfeiffer, 67. t. 3. f. 37. 

 oblonga. Leach, Moll. MSS. ; Turton, 



Man. ed. 1. t. 4. f. 74.; Alder, Cat. 6. n. 20. (not 



Drap.). 

 Succinea amphibia /3. Nilson, 41. 



. 7 and 8; Drap. Mollusc, f. 23. 



Succinea Pfeifferi. Rossm. Icon. t. 92. f. 46. 



intermedia. Bean, MSS. 



gracilis. Alder, Mag. Zool. §* Bot. ii. 106. ; 



Johnst. Beriv. N. H. Club, 1838. 

 Succinea Levantina. Desk. Lam. Hist.wi. ed. 2. 



317.? 



Inhabit banks of rivers and streams, — common. 

 Very like the former, but is smaller, narrower, 

 i 6 



