HELICID^E. 197 



placed in the middle and deep within the 

 mouth, but which is sometimes very obscure 

 and often totally wanting; peristome thin, 

 not margined, but slighty reflected and form- 

 ing an umbilicus ; and behind the outer lip 

 is a thick white rounded rib. 

 This species varies very much in size, and in the 

 compactness of the spire. 



Captain Brown has added to the list Pupa unidentata 

 Pfeiffer (Broicn, B. S. t. 41. f. 4.) and P. bidentata 

 Pfeiffer {Brown, B. S. t. 41. f. 6.). According to 

 Rossmasler (i. 83.), these species of PfeifFer are only 

 varieties of P. marginata. Brown's figures are so bad 

 that it is not possible to determine what species they 

 are intended to represent. 



Abida Leach. 



Peristome slightly refiexed ; throat many-plaited ; cavity 



of the young shell simple. 



68.4. Pupa juniperi. Juniper Chrysalis Shell, (t. 7. 

 f. 81.) Shell cylindrical, attenuated at the tip, 

 brown, striated; aperture with seven or eight la- 

 minar teeth; the peristome acute and slightly 

 reflected. 



Turbo juniperi. Montagu, p. 340. t. 12. f. 12. 



Pupa secale. Drap. p. 64. t. 3. f. 49, 50. ; Pfeif- 

 fer, 55. t. 3. f. 14. ; Jeffreys, L. T. xvi. 353. ; 

 Rossm. Icon. p. 82. t. 2. f. 35. 



Abida secale. Leach, Mollusc, p. 165. 



Vertigo secale. Turton, Man. ed. 1. 101. t. 7. f. 81. 



Chondrus secale a. Hartmann, 218. n. 20.; 

 Sturm, vi. 7. t. 4. 



Torquilla secale. Studer, Cat. 19. 

 k 3 



