CORILLA. 67 



The palatal plates al'e disposed in much the same manner as in 

 C. fryce, but they are shorter and less curved (see fig. 23 (?), 

 which shows a portion of the iinier side of the outer wall with the 

 palatal plates in situ. The parietal folds are almost identical in 

 shape and position with those in fri/oi (see fig. '2'de) but they are 

 shorter and the union of the first and second (upper and median) 

 folds is not so complete. The specimen shown in fig. 2'de is of 

 interest on account of a small adventitious denticle between the 

 second and third folds. 



Var. erronella, Gude. 



Corilla erronea, var. erronella, Gude, Science Gossip, n. s. iii, 

 1896, p. 127, tig. 16. 



Mucli smaller and thinner tlian C. crronea, and the palatal 

 laniellaj nuich shorter and placed much nearer the mouth of the 

 shell. The outer terminations of the parietal folds and the whole 

 of the thin upper palatal lamellae are visible from the aperture 

 (see fig. 24 a). The third palatal lamella, which in (J. erronea is 



Fig. 24. — Corilla erronea. Tar. erronella. 



nearly horizontal, is here strongly oblique and ascending, while the 

 fourth readies nearly to the jjeristome (see fig. 24 c). Known 

 from a unique specimen in the late Col. Beddoine's collection. 

 He received it with the MS. name C, erroneUa, Nevill. 



75. Corilla carahinata, Ferussac. 



Helicodouta carahinata, Ferussac, Tabl. Syst. Lima§ous, 1821, p. G8, 



n. 109. 

 Helix carahinata, Ferussac, Plist. Nat. Moll., Expl. Planches, 1822, 



pi. 12, fig. 8. 



Tfeli.c rivolii, Deshayes, Encycl. Metli., Vers, ii, 18.']0, p. 208; ibid. ' 

 in Ferussac, Hist. Nat. Moll, i, 1839, p. 7 ; Pfeifter, Couch.-Cab., 

 rieliceen, iii, 1853, p. 489, pi. 160, tigs. 12, 13 ; Peeve, Conch. 

 Icon, vii, 18.j4, pi. IS-j, tig. 1284; Chenu, Encycl. Hist. Nat., 

 Moll. 18o8, p. 133, figs. 7-9; Brot, Journ. Couchvl. xii, 1864, 

 pi. 2, tig. 10 ; Hauley & Theobald, Conch. lud. 1870^ pi. 14, fig. 2. 



Helix (Atopa) rovolii, err. typ., Albers, Die lleliceen, 18.50, p. 90. 



Anchistmna {Atopa~) rivolii, Chenu, Man. Conchyl. i, 1860, p. 463, 

 figs. 3452-54. 



Helix {Corilla) rivolii, Nevill, Hand List, i, 1878, p. 70. 



r2 



