SCIENCE-GOSS/I'. 



299 



the system by reducing the dose from day today. 

 As further evidence of the cumulative properties 

 of arsenic, it is interesting to note thai when the 

 graveyards in Upper Styria are opened the bodies 

 of the arsenic-eaters can bo distinguished by their 

 almost perfect state of preservation, due to the 

 gradually accumulated arsenic. 

 There have been several criminal eases in Styria 



in which the prisoner has been accused of poison- 

 ing with arsenic, and acquitted by bringing evi- 

 dence to prove that iIk' deceased was an arsenic- 

 eater. The interesting legal problem of an arsenic- 

 eater being wilfully deprived of his daily arsenic 

 does not, up to the present time, appear to have 

 required solving. 



Chancery Lane, W.C. 



BUTTERFLIES OF THE PALAEARCTIC REGION. 



By Henry Charles Lang, M.D., M.E.C.S., L.R.C.P. Lond., F.E.S. 



{Continued from page 263.) 



Genus COLIAS (continued/). 



7. C. aurora Esper. 83, 3. Sibirica Ld. Z. b. V. 

 1852. 



48 — 60 mm. 



$ ground colour of wings deep clear orange, 

 nervures black except where they traverse the 

 marginal borders, where they are more or less 

 greenish-yellow. The amount of striation of border 

 varies in different specimens, but it is constant 

 near the apex of f.w. Marginal borders themselves 

 narrower in proportion than in Colias diva, espe- 



silvery centres both on f. and h.w. Fringes of all 

 the wings red, together with the head, antennae, 

 and prothorax. 



Hab. Transbaical, S. Siberia, Amur, E. Altai, 

 Kuldja. The specimens from the Amur seem to 

 be the largest and brightest. 



a. ab. o cJdoe Eversm. — Bull. Mosc. 1847, ii. 

 p. 73. The form of the corresponding to Colias 

 ednsa ab. Jielice. Ground colour of wings white or 

 greenish-white ; disc, spot of h.w. whitish and 

 never orange. Hab. (?) 



b. var. Itenteana R. H. p. 731. A smaller and less 



1 



.-" 



jb 









f ; 



.if 





W- 



Hale ami Female. 



dally on h.w. Black discoidal spot of f.w. variable 

 in size, but generally smaller than in Colias rdi/sa. 

 H.w. greenish-yellow at inner marginal fold and 

 an. ang. Discoidal spot very little brighter than 

 ground colour. Basal patch very distinct and light 

 ochreous. The outline of the h.w. often exhibits 

 faint traces of outer marginal indentation, but this 

 is not a constant character. All the wings are 

 more or less shot with violet. 9 larger in expanse 

 than $. F.w. ground colour as in £ . bases with 

 greenish dusky shading. Marginal border as in 

 C. edusa, with five or six chrome-yellow spots. 

 H.w. greenish- or yellowish-orange, mure or less 

 shot with violet. .Marginal border broad with large 

 yellow spots ; disc, spot light in centre. U.s. 

 canary-yellow in both sexes. F.w. orange towards 

 central area. Disc, spots well marked, and with 



brightly coloured form. Colour of wings yellowish, 

 instead of being brilliant orange. Disc, spot f.w. 

 light-centred, violet reflection slight or absent. 

 HAB. Transbaical. Kentei mountains. VI.-VII1. 



8. C. olga Romanoff. Mem. Lep. L883; eos. 



ll. s. 



50 60 nun. 



$ bright orange shot with violet, f.w. with the 

 border as in Colias edma, that of the h.w. being 

 narrow as in Colias myrmidone. Neuration of 

 wings not black as in C. aurora. .Marginal border 

 finely dusted with yellow scales, and only very 

 slightly veined with yellow towards apex of f.w. 

 Disc, spot f.w. well defined and round: that ut' 

 h.w. deep orange. Fringes red. streaked with lighl 

 yellow. $ usually found in the white form (forma 



L i 



