28 



CXCLOPBOKlDJi. 



The author draws special attention to the thick, rough perio- 

 stracuui, which forms distaut radiating ridges, in addition to the 

 usual spiral striation in many of the species, and states that no 

 other known Ceylou species appears really to approach it. 



41. Scabrina calyx, Benson. 



Cydojyhorus calyx, Benson, A. M. N. H. ser. 2, xvii, 1857, p. 228 ; 

 Theobald, J. A. S. B. xxvi, 1857, p. 247; Pfeifier, Men. 

 Pneiuu. Suppl. 1, 1»58, p. 56; id., Novit. Couch, ser. 1, ii, 

 1860, p. 145, pi. ;]7, figs. 25 -27 ; Reeve, Conch. Icon, xiii, 1861, 

 Cydophorus, pi. 20, tig. 104 ; Blanford, J. A. S. B. xxxiv, 1805, 

 p. 97 ; Hauley & Theobald, Conch. Ind. 1870, pi. 4, fig. 4. 



Cydophorus [Scabrina) calyx, Blanford, J. A. 8. B. xxxii, 186-3, 

 p. 822 ; Nevill, Hand List, i, 1878, p. 278. 



Cyclostoma [Myxostoma] calyx, Stoliczka, J. A. S. B. xl, part 2, 1871, 

 p. 148 (animal). 



Myxdsloma calyx, Theobald, Cat. Shells Ihit. India, 1876, p. 36. 



Scabrina mli/x, Kobelt & Mollendortf, Nachr. I)euts. Malak. Ges. 

 xxix. 1807, p. 88; id. Cat. Pnenm. 1899, p. 16; Kobelt, Das 

 Tieireich, Lief. 16, 1902, p. 87; id. Conch.-Cab., Cyclophoridae, 

 i, 1908, p. 697, pi. 61, figs. 19, 20. 



Original description : — " Testa late umbilicata, orbiculato-de- 

 pressa, radiato-striatiila, albida, strigis castaneis radiatis superue 

 picta; spira planata, sutuia impressa, apice vix prominuk) ; 

 anfractibus 4;^ cuuvexiusculis, ultimo compresso, subtus, circa 



Fig. 9. — Scabrina calyx. (X -.) 



umbilicum miniuie profuudum, latum, angulato ; apertura obliqiia, 

 circulari, peristomate dtiplici, coiitiuuo, breviter aduato, externo 

 incrassato, superne expauso, anguhito. Opercuio ? 



" Diam. major 10, minor 8, axis 3 mill." (Benson.) 



Hah. Burma: Akoutong (TAeoia/fZ) ; '^lo\x\n\en\ {Blanford). 



"The iiaitened depressed form of this shell, and the angular 

 expansion of the outer peristome at the top of the aperture, render 

 it easy of recognition among the depressed and widely umbiliciite 

 forms of Cydophorus." {^Benson.) 



Blanford * thinks that some mistake must have been made in 

 labelling, for he found the shell abounding in Motdmein, but 

 althougli he repeatedly searched all round the Akoutoug Hills he 



* J. A. S. B. xxxiv, 1865, p. 97. 



