. Mollusca ... Mollusks. COEILLA. 63 Helix (Atopa) odontophora, Tryon, Man. Conch, ser. 2, iii, 1887, p. 157, pi. 33, figs. 24-26. Gorilla odontophora, Pilabry, Man. Conch, ser. 2, ix, 1894, p. 148; Gude, Science Gossip, n. s. iii, 1896, p. 91, fig. 10 (shell and armature). Original description :—" H. testa late umbilicata, rotundato- vel ovato-discoidea, solidula, castanea vel rufeseenti-lutea, superne subplanulata, oblique tenuiter costulato-striata, subtus valde concava, striata, nitida; spira planiuscula, versus apicem obtusum elevatiore, sutura impressa ; anfractibus 4, primis convex
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. Mollusca ... Mollusks. COEILLA. 63 Helix (Atopa) odontophora, Tryon, Man. Conch, ser. 2, iii, 1887, p. 157, pi. 33, figs. 24-26. Gorilla odontophora, Pilabry, Man. Conch, ser. 2, ix, 1894, p. 148; Gude, Science Gossip, n. s. iii, 1896, p. 91, fig. 10 (shell and armature). Original description :—" H. testa late umbilicata, rotundato- vel ovato-discoidea, solidula, castanea vel rufeseenti-lutea, superne subplanulata, oblique tenuiter costulato-striata, subtus valde concava, striata, nitida; spira planiuscula, versus apicem obtusum elevatiore, sutura impressa ; anfractibus 4, primis convexiuseulis, ultimo antice convexiore, turn descendente, dilatato-deflexo, subtus valde inflato; apertura perobliqua, obtuse subcordata, lamellis 2 parietalibus (superiore longe intrante carvata, inferiore sub- parallela, breviore, subcurvata, ab apertura remofciuscula), pala- talibus 4 brevibus semilunaribus vel sinuatis (omnibus integris ab apertura conspicuis, extus perlucentibus) coarctata; peristomate purpurascenti-albido vel castaneo, calloso, breviter reflexo, margi- nibus superiore et inferiore subdentato-incrassatis. " Diam. maj. 22-26, min. 17-19, alt. 7-8 mill." (Benson.) Hah. Ceylon: Fort McDonald (Layarcl); Uda Pussellawa (Preston). The figure given of O, edontophora in Conch. Ind. pi. 57, fig. 4, and copied in Tryon's work, pi. 33, fig. 24, is somewhat misleading, as it evidently represents an immature specimen, although no reference is made to this fact. The figures now reproduced illustrate a specimen in Mr. Ponsonby's collection. On reference to fig. 18 6 it will be seen that only two parietal folds are. Fi". 18.—Corilla odoutaplwra. present. Pig. 18 c exhibits the barriers as seen from behind their inner terminations, and it will be observed that there are four palatal folds, the upper three (visible through the shell-wall) are shown in figs. V&d and 18«, while fig. 18 a exhibits the under- side of the shell with the third and fourth folds