310 CLAUSILIID^E. 



distinguished by its sculpture, texture, and the internal plicae." 

 (Benson.} 



Blanford, when figuring Clausilia ceylanica, states that Benson, 

 in describing the species, overlooked the lunule, which is as well 

 developed as in C. ios and C. bacillum. 



The only known species from Ceylon. In addition to the 

 features mentioned by Benson it may be said to be characterized 

 by the short upper parietal fold. The shell figured by Hanley and 

 Theobald has been presented to the British Museum by 

 Mr. Harvey. It is a trifle more convex than Benson's type, its 

 diameter being 3 mm., whereas Benson, in his original description, 

 mentions 2'5 mm. Like most species of Clausilia it varies some- 

 what in size, for two specimens in the Beddome collection, both 

 of eight whorls, measure !O5x2'75 mm. and 11x3 mm. 

 respectively. 



274. Clausilia theobaldi, Blanford. 



Clausilia (? Medora) theobaldi, Blanford, J. A. S. B. xli, 1872, 



p. 201, pi. 9, fig. 5. 



Clausilia theobaldi, Pfeifter, MOD. Ilelic. Viv. viii, 1877, p. 521. 

 Clausilia (Phaedusa (Euphaedma}) theobaldi, Boettger, Ber. Offen- 



bacher Ver. Naturw. 1878, Mitt. p. 53; Pfeifter & Clessin, 



Nomencl. Ilelic. Viv. 1881, p. 391. 



Original description : " Testa rimata, fusiformi turrita, cornea, 

 coufertim flexuose costulata, transluceus. Spira turrita, sensim 

 attenuata, lateribus superne subrectis, apice acutiusculo, sutura 

 impressa. Anfr. 11 convexi, antepenultimus et penultimus 

 majores, ultimus juxta suturam tumidiusculus infra plicam 

 palatalem superam compressus, subtus rotundatus. Apertura vix 

 obliqua, piriformis, lamellis approximatis, mediocribus, supera 

 acuta, infera iramersa, lunella distincta, plicis palatalibus 2, supera 

 elongata, altera brevi. Peristoma rectum, expansum, solutum, 

 margine palatali haud sinuato. 



"Long. 22, diam. 3'5 mm.; apert. 3'5 mm. longa, 2'6 lata." 

 (Stanford.} 



Hob. Burma: Tonghu (Theobald, Blanford}; Mai-i, Arakan 

 Coast (Theobald). 



There are two specimens in the Theobald collection in the 

 British Museum, from hills to the east of Tonghu, the type 

 locality, whose length is less than that indicated in the original 

 description, the dimensions being 17'75x3'5 mm. although they 

 possess half a Avhorl more. The figure given by Blanford in 

 J. A. S. B. is still smaller, measuring only 16 mm. The Beddome 

 collection also contains specimens which reach only 17 mm. in 

 length, the diameter, nevertheless, being 3-5 mm. In the Theobald 

 collection I found three shells labelled " arakana, Stoliczka, Mai-i, 

 Arakan Coast," one of which undoubtedly belongs to the present 

 species. 



