Mollusca : testacellidæ and zonitidæ / by W.T. Blanford and H.H. Godwin-Austen.

  • William Thomas Blanford
Date:
1908
Catalogue details

Licence: In copyright

Credit: Mollusca : testacellidæ and zonitidæ / by W.T. Blanford and H.H. Godwin-Austen. Source: Wellcome Collection.

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    [“ Ammal dark brown, reddish at the pedicles. Mantle thick, greyish brown, freckled with white; body very rough ; pedal row very distinct and the elongated tubercles whitish, basal edge pale greyish brown. Tail-gland distinct, surrounded bv a swollen edge.” (Stoliczka, attached to his drawing of the animal.)] [Genus STAFFORDIA. Staffordia, Godwin-Austen, Mol. Ind. ii, 1907, p. 184. Type, S. dciflaensis, Godwin-Austen. Range. Dafla Hills. Animal. Toot pointed, no gland, peripodial margin simple with a narrow pale margin; right and left shell-lobes present, both small. Generative organs : dart-sac small, globose, with a loug cord-like attachment to the coronal gland ; penis simple ; sperma- theca long. Radula with aculeate laterals. The Dafla Hills, in which this very aberrant mollusk was found, lie on and north of lat. 27° and between long. 93° 10' and 93° 50', at the base of the Eastern Himalaya. Nothing like it has been as yet found in any part of India or Burma. The shell of this species is an instance of how shell-character may be misleading in classification. So like is it to many species of true Macrochlamys, any conchologist would place it in that genus. In a paper on the Helicidse (Zonitidse) collected during the expedition into the Dafla Hills, Assam (Journ. Asiat. Soc. Bengal, vol. xlv, pt. 2, 1876), occurs the first notice of the type species.] [466. Staffordia daflaensis, Godwin-Austen. Helix lubrica, Bs. F ; Godivin-Austen, J. A. S. B. xlv, 2, 1876, p. 311, pi. 8, fig. 9 ; id. (Macrochlamys) Mol. Ind. i, 1883, pi. 21, fig. 6 (sculpture) ; id. t. c. ii, 1907, p. 185, pi. 113, figs. 1-1 i. Macrochlamys shengorensis, Godwin-Austen, Mol. Ind. i, 1883, p. 102, pi. 22, fig. 5 (young shell). Original description:—Shell depressedly tumidly conoid, umbi- licated, solid, rather flat on base. Sculpture very regular, longi- tudinal, sharply defined, broad-ridged ribbing. Colour rich olivaceous with ochre tint. Spire low, sides convex. Suture shallow, adpressed. Whorls 6, rapidly increasing, the last rounded; aperture broadly ovate, oblique, milky white within; peristome acute, sinuous above and slightly so below, much reflected at umbilical margin ; columellar margin very oblique and descending. Major diam. Minor diam. Alt. axis. Alt. b.-w. Largest size : 23*5 20-0 9*4 7’S mm. Smaller size: 18f8 16*2 8*0 5*8 „ Hab. Shengorh Peak, Dafla Hills, 7000 ft. (Godwin-Austen).