906 HELIX. 



HeliK crenata. Martyn Univ. Conch, ii. t. 69. Gmelin, 



p. 3623. 

 Nerita Nux Avellana. Chemnitz, v. p. 272. t. 188. f. 1919 



and 1920. 

 Nerita, No. 18. Schroeter Einl. ii. p. 310. 

 Bulimus Avellana. Bruguiere Enc. Meth. p. 297. 

 Spenghr Besch. Berl. 'Naturf. i. p. 395. t. 9. f. 4 and 5. 



Inhabits New Zealand. Martyn. 



Shell about an inch long, and equally broad, frequently of a dull 

 greyish ash-colour, or sometimes whitish mottled with brown ; 

 the body-whirl is ventricose, and the spire only a little pro- 

 duced at the summit ; the outer lip has a deep notch at the 

 angle formed by the keel of the body-whirl, and the pillar-lip 

 has a protuberance near its middle and opposite the umbili- 

 cus, which is placed remarkably high ; in colour and shape 

 it bears some resemblance to a hazel-nut. 



FABA. 40. Shell imperforate, smooth, of a saffron- 

 colour, with the margin of the whirls and the 

 base brown ; aperture blue. 



Helix Faba. Martyn Univ. Conch, ii. t. 67. Gmelin, p. 

 3623. 



Inhabits Otaheite. Martyn. 



I am unacquainted with this shell, and unable to find the plate 

 referred to in Martyii's work ; the only perfect copy I ever 

 saw is in All Souls' Library at Oxford, and the memoranda 

 which I made on looking it over have been unfortunately mis" 

 laid. 



* * * Umhilicated, and the Whirls rounded. 



CORNEA. 47. Shell with four rounded striated whirls, 

 and the upper side umhilicated, and more 

 concave than the base. 



. Helix cornea. Limmm Syst. Nat. p. 1243. Pennant 

 Zool. iv. p. 134. t. 83. f. 126. Born Mas. p. 372. 

 Schroeter Fluss. p. 233. t. 5. f. 19 and 20, and t. J 1 C. 

 f. 7; and Einl. ii. p. 137. Chemnitz, ix. part 2. t. 127. 

 f. 1113 to 1 115. Gmelin, p. 3623. Donovan, ii. t. 39. 

 f. 1. Montagu Test. p. 448. Maton and Racket, in 

 Lin. Trans, viii. p. 190. Dorset Cat. p. 52. t. 20. f. IS. 

 Burrozo's Ele?nents, p. 17O. t. 20. f. 2. 



