100 PROCEEDINGS OF THE NATIONAL, MUSEUM vol.66 



AGKISTRODON ACUTUS (Guenthcr) 



For synonymy see Stejneger, Proc. U. S. Nat. Mus , vol. 38, 1910, p. 112, to 

 which add : 



Ancistrodon acutus Boulenger, Proc. Zool. Soc. London, 1899, p. 166 

 (Kuatun, Fukien). — Wall, Proc. Zool. Soc. London, 1903, p. 98 (Yangtse 

 Valley).— Stanley, Journ. N. China Asiat. Soc, vol. 45, 1914, p. 31 

 (Fukien). 



The National Museum is indebted to C. H. Barlow for a fine male 

 (No. 64024) of this remarkable copperhead from Moh-Kan-Shan, 

 Chekiang Province. The scale formula is as follows : sc. 21 ; v. 161 ; 

 a. 1 ; subc. 65, of which the first eight are single, the others divided ; 

 1. 7; oc. 3-2; temp. 2+4; rostral undivided; lower postocular extend- 

 ing under the eye and meeting anteriorly a small subpreocular, thus 

 separating the eye from the supralabials. 



TEIMERESURUS MUCROSQUAMATUS (Cantor) 



For synonymy see Herpetology of Japan, 1907, p. 467, to which add : 

 Stanley, Journ. N. China Asiat. Soc, vol. 45, 1914, p. 31 (Fukien). 



A young specimen (No. 63417) collected by Rev. D. C. Graham 

 at Suifu, Szechwan, furnishes a welcome opportunity to examine 

 into the identity of the Formosan representative of this poisonous 

 snake and the mainland form. It will be recalled that the type of 

 T. mucrosquamatus which came from Naga Hills, Assam, has been 

 lost and that, as no specimens from that locality had been recorded 

 since, doubt had been raised as to the title of the Formosan snakes 

 to the name given by Cantor. Since then Mr. Stanley has recorded 

 specimens from Fukien, but apparently no comparison has been 

 instituted. 



There can scarcely be any doubt that the Szechwan specimen is 

 entitled to the name. On the other hand, it is a very young speci- 

 men, and the two Formosan specimens at my disposal are full grown. 

 That may account for the different shape of the head which is much 

 shorter in the Szechwan specimen. The only other difference of any 

 consequence which I have found is that in the Szechwan specimen 

 the number of scale rows between the subocular and the supralabials 

 is four while in the Formosan ones there are only three and two. 

 The very variation of this character in the island specimens, how- 

 ever, would seem to indicate that this difference is of no importance. 

 The scale formula otherwise falls within the limit established for 

 the Formosan specimens, viz., sc. 27; v. 205; subc. 77; 1. 10. There 

 are about 17 small scales in a row between the supraoculars, but Dr. 

 Oshima,*'*' has recorded 14 to 18 in Formosan examples. 



««Annot. Zool. Japon., vol. 17, pt. 3, 1910, p. 206. 



