60 



IIELICID.E. 



74. Gorilla erronea, Alhers. 



Helix rivoli, Pfeiffer (uoii Desliayes), Mou. Ilelie. Vi v. i, 1S48, p. 407; 

 Keeve, Conch. Icon, vii, 1852, pi. 78, tig. 413 ; Pfeifter, Coiich.- 

 Cab., Heliceeii, ii, 1852, p. 238, pi. 112, fiirs. 16-19; iii, 1853, 

 pi. 160, iigs. 8-11, 14, 15. 



Helix erronea. Albers, Zeits. ^lalak. x, 1853, p. 107 ; Kobelt, 

 Illust. Concli. Buch, 1879, pi. (58, fig. 37; Brot, Journ. Conchyl. 

 xii, 1864, pi. 2, figs. 7-9. 



Anchistoniu (Corilla) erroneum, Adams, Gen. llec. Moll, ii, 1855, 

 p. 208. 



Corilla erronea, Frauenfeld, Verb. K. K. zool.-bot. Ges. xix, 1869, 

 p. 876 ; Semper, Reisen Arch. Philippinen, Wiss. Res. 2, iii, 

 1870, p. 100, pi. 12, fig. 18, pi. 16, fig. 4 (anatomy); Pilsbry, 

 Man. Conch, ser. 2, ix, 1894, p. 148, pi. 41, fig. 19 (armature), 

 pi. 42, figs. 37, 38 (anatomy) ; Gude, Science Gossip, N. s. iii, 

 1896, p. 89, fig. 3, p. 90, fig. 7 (shell and armature). 



Helix (Corilla) erronea, Nevill, Hand List, i, 1878, p. 70. 



Helix (Atopa) erronea, Try on, Man. Conch, ser. 2, iii, 1887, p. 157, 

 pi. 33, figs. 19-21. 



Orujinal description : — " Testa latissime umbilicata, oblongo- 

 discoidea, superne plana, irregulariter costulato-striata, f iisca, basi 

 lajvigata, fusco-olivacea, nitidissima ; anfractus 5, ultimus in 

 latere testce sinistro aiigustatus, autice dilatatus, paululum des- 

 cendens; apertura obliqua, obtuse obcordata, iutus margaritacea, 

 4-]amellata ; laraellis tribus in pariete aperturali, media valida, 

 promiuens, laterales breviores, profundae, lamella palatalis singula 

 pi'ofunda. interstitio inter lamellam ventralemmediam et sinistraui 

 opposita ; peristoma callosum, breviter reflexum, marginibus callo 

 medioeri cum lamina ventrali media confluente, junctis, basali 

 callo oblongo, dentiformi incrassato. 



"Diaro. maj. 15, min. 18, alt. 7 millim." (Alhers.) 

 Hah. Ceylon : Xewara-Eliya (Nevill, Blanfonl). 



a b 



Fig. 22. — Corilla frya. 



Fig. 23. — Cm-illa erronea 



