250 



Notes on some Indian and Burmese Helicida. 



[No. 8, 



these seeming dissimilar species. H. vittata is a very variable shell 

 as the following measurements of specimens in my cabinet show, 



A. 28 X 22 mills, 



B. 24 x 18 „ 



C. 20x13 „ E. H.fallaciosaU X 6 milk 



D. 24 x 11 „ 



Specimens A, B and C of H. vittata are all from Ceylon,* 

 A being a very elevated var, B a depressed var, and C the ordinary 

 small var. D is the shell received from Mr. H. F. Blanford, and 

 though white and more of the form of H.fallaciosa than of H. vit- 

 tata, yet it must, I think, be classed as a variety or local race of the 

 •last. Numerically reduced the proportions are nearly thus— 

 A. = 15 B. = 10 G. — 6 B. = 6 E. = 2 



So that if allowance is made for a better series of specimens from 

 which measurements might be made, we see that individuals of the 

 type shell A and C differ nearly as much from each other, as specimen 

 E (H.fallaciosa) does from C. But this method of stating the rela- 

 tion, very inadequately represents it, D having the aspect and size of 

 H. vittata, with the precise depressed form of H. fallaciosa, with 

 whose colourless varieties it may be compared, as unlike vittata, it is 

 colourless and white. It w r ould be very curious if intermediate forms 

 should eventually be discovered more closely connecting these at first 

 sight utterly dissimilar species H. vittata and M. fallaciosa. 

 Thaiet Mio, October, 1863. 



* I may add to this list the extreme measurements of specimens in my own 

 collection shewing still greater variability. 

 a b c 



Diam. 17 m.m. 17 m.m. 29 m.m. 

 Alt. 18 m.m. 19 m.m. 22 rmm. 

 Specimen a is of uniform chestnut brown, b white with faint brown bands 

 and violet apex, c white with flesh colored apex. H. F. B. 





HJrrata in Mr* 



'TheohaWs 



paper, 



in No. 4 of 1863. 



Page 



line 



for 



read 



Page 



line for read 



354, 



2, 



leaning 



bearing. 



370, 



12, Borilise Bontisa. 



355, 



26, 



living 



tiny. 



375, 



14, Bensoni Barniana. 



358, 



7 5 



focal 



wild. 



376, 



28, After B add sp. 



367, 



32, 



bora 



vara. 



381, 



10, etnilla rutella. 



