BOYSIDIA. 207 



Aperture rounded-oblong, a little dilated, and more than one- 

 third the total length, having 5 whitish teeth : the first pari- 

 etal tooth large, lamellar, median, another smaller parietal 

 placed at the suture; third tooth small, at the umbilicus; 

 fourth and fifth in the lip, submedian and at base, moderate, 

 equidistant. Lip simple, not reflected. Length .16, width .09, 

 alt. of aperture .06 inch [= alt. 4, diam. 2.25 mm.] (Theob.). 



"This species resembles P. bathyodon Bs., but is more acu- 

 minately and regularly pyramidal" (Theob.). 



Burma: Shan States (Fedden) ; Bhamo (Anderson) ; Pin- 

 goung, Shan Hills (Godwin- Austen). 



Pupa salwiniana THEOB., Journ. Asiatic Soc. Bengal, vol. 

 39, 1870, p. 400. Hanley & Theobald, Conch. Indica, 1874, pi. 

 100, f. 9. SOWERBY, Conch. Icon., xx, 1876, pi. 16, f. 150. 

 PFR., Monogr., viii, 403. NEVILL, J. A. S. B., vol. 46, 1877, 

 p. 23 ; Zool. Res. Two Exp. W. Yunnan, i, 1879, p. 882. Pupa 

 salwineana Theob., GODWIN- AUSTEN, P. Z. S., 1888, p. 244. 

 Boysidia salwiniana Theobald, GUDE, Fauna Brit. India, Moll., 

 ii, p. 295. 



Probably related to hupeana. I have not seen the species, 

 and copy the figure from Conchologia Indica. Mr. Gude has 

 given the following notes: "Theobald states that the species 

 resembles P. bathyodon Benson, but is more acuminately and 

 regularly pyramidal. I have not seen bathyodon, but to judge 

 by the figures in Conch. Ind. the comparison is not a happy 

 one. B. salwiniana appears to me to assimilate rather with 

 plicidens. The spire, however, is more attenuated, and the 

 shell is about twice as large. There is also an inflection of the 

 right (outer) margin of the peristome, which is continued as 

 a horizontal superficial groove on the outer wall, correspond- 

 ing with an elongated horizontal fold on the inside of the right 

 margin, a feature which still further tends to connect this 

 species with plicidens, and induces me to place it in the genus 

 Boysidia. 



"Two specimens in the Beddome collection (British Mu- 

 seum), labeled Burma, are rather larger than the type, meas- 

 uring 5.2 x 3.5 mm. including the peristome. Godwin- Austen, 

 who records it from Pingoung, Shan Hills, at an altitude of 



