PLECTOPYLIS. 99 



93. Plectopylis leiophis, Benson. 



Helix (Plectopylis) leiophis, Benson, A. M. N. H. ser. 3, v, 1860, 

 p. 246 j Blanf ord, J. A. S. B. xxxiv, 1865, p. 94 ; Godwin-Austen, 

 P. Z. S. 1874, pi. 74, fig. 2 (shell and armature) ; Tryon, Struct. 

 Conch, iii, 1884, p. 33, pi. 94, fig. 25. 



Helix (Atopa (Plectopylis)) leiophis, Tryon, Man. Conch, ser. 2, iii, 

 1887, p. 163, pi. 35, figs. 88, 89. 



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

 Science Gossip, N. s. v, 1898, p. 16, tig. 76 (shell and armature). 



Plectopylis (Chersaecid) leiophis, Gude, op. cit. vi, 1899, p. 148. 



Helix refuga, Pfeiffer in Philippi, Abb. Beschr. Conchyl. iii, 1847, 

 Helix, p. 2, pi. 10, fig. 4 ; ibid., Conch.-Cab., Heliceen, i, 1848, 

 p. 383, pi. 66, figs. 21-23 ; Reeve, Conch. Icon, vii, 1852, pi. 82, 

 fig. 436; Theobald, J. A. S. B. xxvi, 1857, p. 249; Hanley & 

 Theobald, Conch. Ind. 1870, pi. 13, fig. 8 (non Gould). 



Helix (Plectopylis} pseudophis (Blanford), Godwin- Austen, P. Z. S. 

 1874, p. 610, pi.' 74, fig. 3 (shell and armature). 



Helix (Atopa (Plectopylis)) pseudophis, Tryon, Man. Conch, ser. 2, iii, 

 1887, p. 162, pi. 36, figs. 80, 81. 



Plectopylis pseudophis, Pilsbry, Man. Conch, ser. 2, ix, 1894, p. 146 ; 

 Gude, Science Gossip, N. s. iv, 1897, p. 170, fig. 62 (shell and 

 armature) ; v, 1898, p. 17, fig. 77 (armature). 



Plectopylis leiopliis (= pseudophis), Gude, Proc. Malac. Soc. London, 

 viii, 1908, p. 88. 



Original description : " Testa sinistrorsa, late et profunde 

 umbilicata, subdiscoidea, superne planata, interdum omuiiio plana 

 vix solidula, oblique et arcuatira rugoso-striata, lineis nonnullis 

 spiralibus decussata, sub epidermide scabra, fusco-cornea, albida ; 

 spirae apice vix elevatiusculo laevigato, sutura impressa ; anfractibus 

 5|-6| angustis, ultimo supra peripheriam angulato, antice valde 

 deflexo, basi rotundata, apertura valde obliqua subhorizontali, 

 lunari, peristomate reflexo albido, marginibus lamina sinuosa 

 elevata, rnedio lamellam profunde intrantem, usque ad januain 

 attingentem ernittente junctis. Janua pliciformi fauciali prima 

 remota ; lamina 1 parietali vertical! simplici forti lamellam aper- 

 turalem valde elongatam superne emittente, infra earn lamellis 

 duabus brevibus (a lamina spatio brevi separatis) munita ; plicis 

 6 palatalibus intrantibus, quinta robustiore obliqua. 



"Diam. major 11-14, minor 8-11-5, alt. 3-6 mill." (Benson.} 



Hob. Burma: Kwadouk, Thyet-Myo (Benson); Akoutoung 

 (Blanford). 



Lt.-Col. Godwin-Austen stated (P. Z. S. 1875, p. 44) that 

 P. leiophis was identical with Gould's Helix refuga, basing this 

 identification on the specimens in the British Museum, so labelled 

 by Cuniing. Upon comparing the latter with Benson's type 

 specimens, obligingly lent to me in 1898 by Dr. S. E. Harmer, 

 then in charge of the University Museum of Zoology, Cambridge, 

 I found they were indeed identical, but the specimens in the 

 British Museum had been wrongly identified by Cuming and 

 Pfeiffer. They formed the subject of the illustrations purporting 

 to represent H. refuga in Philippi's work, quoted above, in 

 Eeeve's Conch. Icon., and in Conch.-Cab. All these figures 

 must, therefore, be referred to P. leiophis. 



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