. Mollusca ... Mollusks. 62 HELICID^. Peristoma dilute olivaceo-fuscutn, callosum, brevissime reflexum ; marginibus callo. elevato junctis, supero subdentato, infero dente quadrato munito. " Diam. maj. 25, min. 20, alt. 9 ; {Brot.) Hob. Ceylon {Humbert, CoUett); Newara Eliya and "Watawala (Priston). Differs from all other species of Gorilla, except charpentieri and beddomece, in being more rounded in outline. Prom the former it is easily distinguished by its smaller size and in being a trifle more excentric, while from the latter it may readily be separated by the rounded w
. Mollusca ... Mollusks. 62 HELICID^. Peristoma dilute olivaceo-fuscutn, callosum, brevissime reflexum ; marginibus callo. elevato junctis, supero subdentato, infero dente quadrato munito. " Diam. maj. 25, min. 20, alt. 9 ; {Brot.) Hob. Ceylon {Humbert, CoUett); Newara Eliya and "Watawala (Priston). Differs from all other species of Gorilla, except charpentieri and beddomece, in being more rounded in outline. Prom the former it is easily distinguished by its smaller size and in being a trifle more excentric, while from the latter it may readily be separated by the rounded whorls. In colour it varies from blackish brown to olivaceous corneous. Nevill * threw some doubt on the cor- rectness of Brot's figure of the species. When studying these. Fig. 17.âCorilla hiimberti. shells in 1896, I applied to Dr. Brot for the loan of his type and he was good enough to comply with my request. I was thereby enabled to confirm Benson's conjecture that the original figure was slightly misleading, as the basal palatal fold appeared to be joined to the suture, owing to the position in which the shell had been placed, but on tilting it from the left side, the fold was found to be quite unconnected with the suture, and I was therefore in a position to give a more correct figure, which is now reproduced. This fold corresponds with the fourth in the other species, while the parietal fold corresponds with the second of the others. An examination of several specimens received subsequently from the late O. Oollett and from Mr. Preston, has, however, revealed the fact that the palatal fold is by no means a constant feature, for these specimens, without exception, are devoid of all palatal folds. A few exhibit traces (visible from without) of an immature set of oblique folds on the penultimate whorl, but the folds themselves have been absorbed. 72. Corilla odontophora, Benson. Helix {Corilla) odontophora, Benson, A. M. N. H ser S xv 1865, p. 175; Nevill, Ilaud List, i, 18
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