PLECTOPTLIS. 117 



shaped, with tha convex side towards the aperture ; on its anterior 

 side, in place of a second vertical plate as in P. brachyplecta, are 

 found two elongated, oblique, converging denticles, one above and 

 one below. The palatal armature is similar to that of P. brachy- 

 plecta. Pig. 56 d, which shows the parietal wall, is from one of 

 the specimens in the British Museum. Figs. 56 a-c are drawn 

 from a specimen, labelled Attaram, obligingly lent to me by the late 

 Miss Linter, of Arragon Close, Twickenham, who informed me 

 that she received it from Mr. Theobald. This was also labelled 

 P. brachyplecta, lout I had no hesitation in referring it toP.smithiana. 

 It measures major diam. 26 ; minor 21 mm. ; alt. 9 mm. 



104. Plectopylis brachyplecta, Benson. 



Helix (Plectopylis} brachyplecta, Benson, A. M. N. H. ser. 3, xi, 

 1863, p. 319 ; Godwin-Austen, P. Z. S. 1874, pi. 74, fig. 8 (arma- 

 ture) ; Nevill, Hand List, i, 1878, p. 72. 



Helix brachyplecta, Hanley & Theobald, Conch. Ind. 1870, pi. 57, 

 figs. 7, 10. 



Helix (Atopa (Plectopylis)) brachyplecta, Tryon, Man. Conch, 

 ser. 2, iii, 1887, p. 163, pi. 35, figs. 76, 77, 82, 83. 



Plectopylis brachyplecta, Pilsbry, Man. Conch, ser. 2, ix, 1894, p. 145 ; 

 Gude, Science Gossip, N. s, iii, 1897, p. 246, fig. 37 (shell and 

 armature). 



Plectopylis (Endoplori) brachyplecta, Gude, op. cit. vi, 1899, p. 148. 



Original description : " H. testa dextrorsa, late umbilicata, dis- 

 coidea, obesiuscula, minute arcuato-striata, striis minutissimis 

 spiralibus obsolete decussata, opaca, non nitida, rubescenti- 

 castanea, superne saturatiore, circum apicem succinea : spira 

 planata, apice vix prominente, sutura impressa ; anfractibus 6, 

 lente accrescentibus, convexiusculis, ultimo rotundato, superne 

 prope suturam subangulato, antice descendente ; apertura obliqua, 

 rotundato-lunari, subauriculata, intus lilacina ; peristomate ex- 

 pansiusculo, rufo-castaneo, marginibus remote convergentibus, 

 plica arcuata prominente parietali junctis, lamina longiuscula 

 subascendente e niedio plicae intus recedente, plicis 2 parietalibus 

 remotis verticalibus, quarum externa arcuata internaque curvata, 

 laminis 6 remotioribus palatalibus, quarum superiore et basali 

 tenuibus et 4 medianis incrassatis, foveatis ; umbilico lato, concavo. 



" Diam. maj. 22, min. 18, axis 8 mill." (Benson.) 



Bab. Burma : Moulmain (Gordon) ; Attaran Valley (Theobald). 



The shell is disk-shaped, widely umbilicated, dull reddish chest- 

 nut, with amber- coloured apex, paler below, finely and regularly 

 ribbed, and decussated by minute spiral sculpture. It is composed 

 of six or six and a half more or less convex whorls, which increase 

 slowly, the last being rounded and subangulated above, near the 

 suture, and shortly and abruptly descending in front. The aper- 

 ture is ear-shaped, and the peristome brown, strongly thickened 

 and a little reflected, its slightly converging margins being joined 

 by a thickened curved ridge, which is slightly notched at the 

 junctions above and below. A strong entering flexuous fold is 



