82 CAUCASIAN LAURUE. 



seen it, but except in the less thickened lip it appears not to 

 differ from the following form, which is figured from a speci- 

 men out of the Boettger collection. 



Lauria pulchra form bilabiata (Ret.). PI. 9, figs. 11, 13, 14. 

 Besides the two specimens from which this species (pulchra) 

 was described, I have found a third which is distinguished 

 from them by its smaller size, 3.5 mm. long, with 7 whorls, 

 as well as by having the whitish lip doubled, whilst the first 

 two found have only a simple, thickened lip. The form of 

 the apertural folds and the close costulation remain as in the 

 typical form (Bet.). 



Crimea, in flotsam on the strand between Theodosia and 

 Sudak (Retowski). Western Caucasus (Boettger coll.). 



20a. Lauria pulchra nitens (Bttgr.). PI. 9, figs. 12, 15. 



Shell larger than the type, uniform chestnut, the whorls 

 more narrowly costulate-striate (not costulate) ; peristome 

 doubled, the inner lip orange. Length 4 to 4%, diam. 2^4 to 

 2V. mm. (Bttg.). 



Woods of the Kurdschips lowland ; on Mt. Guk, 3000 ft. ; 

 and in the forest zone of the southeastern and northern out- 

 liers of the Ochten-Fischit group, Circassia (Leder). 



Distinguished from typical examples of var. bilabiata, says 

 Boettger, by the gloss of the dark brown shell and the less 

 sharp rib-striation, which is about doubly finer. The speci- 

 mens from the Oschten-Fischt Stock are smaller than those 

 of the lowlands. 



Lauria pulchra (Ret.) var. nitens Boettger, Nachr.-Bl. D. 

 m. Ges., 1888, p. 152 ; Ber. Senckenb. Ges., 1889, p. 22. 



The minute tubercular basal fold is immersed and towards 

 the left side, not visible in a face view. A topotype out of the 

 Boettger collection, from the Kurdschips lowlands, is figured. 

 Length 4.5, diam. 2.3 mm., 8 whorls. 



21. Lauria pontica (Ret.). 



Shell ovate, deeply umbilicate, densely costulate, a little 

 glossy, pale corneous. Spire ovate-conic, the summit shortly 

 conic, suture impressed. Whorls 7, a little convex, densely 



