136 BARBOUR: ZOOGEOGRAPHY. 



sputalrix. Sc.'lf, 175, 52. Sc. f|, 173, 50. Sc. If, 176, 51. Sc. f|, 173, 50.- 

 Sc. If, 175, 52. Sc. If, 171, 50. Sc. |f, 183, ?. The range may be expressed as 

 Sc. il^, 163-183, 44-52. Curiously, the highest ventral count of a Javan in- 

 dividual is the same as the lowest ventral count of a Sumatran. 



The coloration of this form is usually ^■ery dark Ijrown or black above, 

 yellowish on chin. A complete or broken circular mark is usually present on the 

 hoods of the young. The marks on the hoods of most adults are nearly vanish- 

 ing; hence, perhaps, the recording of two by Boulenger as var. caeca, which has 

 the hood regularly unmarked. 



A'', n. miolepis (cf. Boulenger, loc. cit., p. 384-385). 



The Bornean form may be distinguishable by the peculiar marking in the 

 young. A scale-formula based on Boulenger's data is Sc. ,7^19; 181-199; 45- 

 51. In this case all of the specimens identified with this race come from a single 

 region. 



A^. n. atra (Cantor). (Stejneger, loc. cit., p. 395). 



To this form a single specimen, from Ting-an, Hainan Island, seems re- 

 ferable; its scales count If, 173, 43. A young specimen agreeing well in color 

 and squamation with Stejneger's description of a young Formosan example. 

 It differs, however, in having the "white rimmed spectacles" lying in a broad 

 black band, and tlie general ground color olive-green. 



The great difficulty in reaching any general conclusions in regard to the 

 geographical races of this form is the lack of material in large series from well- 

 authenticated localities. When we have records of scale-formulae for hundreds 

 of cobras where we now ha\'e tens, we may be able to reach conclusions which 

 are safely tenable. 



Provisionally, following Stejneger so far as he went, we may summarize our 

 information concerning these races as follows: — 



A'aja naja (Linne). 



Many scales about neck, 29-35 (sometimes 27). Sum of ventrals and 

 subcaudals averaging about 230. Range: — India, Ceylon, Burma, Malay 

 Peninsula. 



A^. n. oxiana (Eichwald). 



Ventrals and subcaudals averaging 268. Transcaspian region. 



Then follow: — 



A^. n. leucodira from Sumatra. 



A'', n. sputatrix from Java and possibly part of Sumatra. 



A'^. n. miolepis from Borneo and Palawan. 



