II. NOTES ON THE GENUS C H LORITIS , 



BECK, WITH THE DESCRIPTION OF THE 



ANIMAL OF A NEW GENUS {BURMO- 



CH LO RITI S). 



By Lt.-Colonel H. H. Godwin- Austen, F.R.S. 



(With Plate IV). 



In preparing contributions to the Zoological Results of the 

 Abor Expedition m}' attention has been called to genera of the 

 Helicidae, and I have come across in my collection of spirit speci- 

 mens several species of much interest as regards the classification 

 of the lyand MoUusca. In this paper I take the genus Chloritis 

 and species appertaining to it, and here I must not miss the oppor- 

 tunity of mentioning the work of Henry A. Pilsbry, who has done 

 so much towards our knowledge of very many families and offer 

 him my thanks for the assistance his work has been to me. 



The genus Chloritis was created in 1837 by Beck ; in 1847 

 Gray took as the type of it Helix ungtilina, Linn., and is followed 

 in " Die Heliceen," pp. 161 and 162 (i860). This shell figured in 

 Pilsbry 's Manual of Conchology, plate 29, figs, i, 2 and 3 is a very 

 distinctive one in form. Apparently the animal has never been 

 examined, and it would appear that the widening of the group to 

 contain forms with a convex spire, unless supported by anatomical 

 characters, was a retrograde step. 



Pilsbry with very little material in spirit to deal with, did his 

 best with the genus, and states that only two species of the typi- 

 cal group of Chloritis have been investigated anatomically, viz. 

 C. dinodeomorpha^Tap. Can. andCleei, Cox, the last by C. Hedley. 

 The figures of the generative organs reproduced on pi. 28, fig. 10 

 and pi. 32, fig. 42, respectively, differ very much one from the other, 

 so much so that the two species can hardly fall into the same genus. 



Pilsbry very truly has said (p. 122) with regard to conflicting 

 opinion as to generic value in this widely distributed group of the 

 Helicidae ; ' * Controversy respecting the generic position of certain 

 species known by the shells alone is idle, for the anatomy only can 

 give a true answer to our questioning." 



Burmochloritis kengtungensis, n. gen., n. sp. 



Locality. —Hills north of Kengtung State, S. Shan States (Col. 

 R. G. Woodthorpe, R.E.) ; four specimens were obtained. 



Shell deeply umbilicated, conoid ; sculpture, hair scars visible 

 on 3rd whorl arranged in oblique lines ; surface under high power 



