252 ZOOLOGISCHE MEDEDEELINGEN — DEEL VL 



the upper one in contact with the subocular, which latter shield is also 

 in contact with the 4th and 5th upper labial. 



As to the coloration both specimens fully agree with Muller and 

 Schlegel's description of Trigonocephalus formosus and with Jan's figure 

 in the Iconographie générale livr. 47, pi. Y, fig. 1. The scales are bor- 

 dered with black, which black colour broadens into rings on the shields 

 of the head and some of the scales of the body, leaving only the middle 

 part of a green colour. On the upper parts of the body there are a great 

 many narrow black crossbands, which crossbands descend along the flanks, 

 but do not cover the three outer rows of scales. 



The Leiden Museum is now in possession of 5 specimens of Lachesis 

 sumatranus agreeing in coloration with Schlegel and Müller's description 

 and all in possession of 3 upper labials in contact with the subocular, 

 viz. the typical specimen from Padang, 2 specimens captured by Dr. J. 

 Büttikofer during the Borneo expedition in 1894 in the interior of Borneo, 

 and the 2 forenamed specimens from Sumatra captured by Mr. Ed. Jacobson. 

 In comparing these specimens with specimens from Deli, Sumatra and 

 one specimen from Banka which agree in the number of ventrals, but 

 differ in having only one or two upper labials in contact with the sub- 

 ocular, and being without black crossbands on the back, or dark rings 

 on the shields of the head and on some of the scales of the body I feel 

 convinced that this green form of the Lachesis with many ventrals must 

 be regarded as to belong to a distinct species viz. Lachesis hageni Lidth, 

 first described by me in Notes of the Leyden Museum 1886, Yol. VIII, 

 p. 53, pi. II, fig. 6. 



35. Lachesis gr omineus (Shaw). 



One specimen from Andalas (Tandjung), Padang Highlands, V, 1914. 



Scales in 19 rows; ventrals 158, anal entire, subcaudals 58/58. 



One specimen without indication of exact locality. 



Scales in 19 rows; ventrals 146, anal entire, subcaudals 58/58. 



One specimen from Andalas (Tandjung), Padang Highlands, Y, 1914. 



Scales in 19 rows; ventrals 154, anal entire, subcaudals 71/71. 



One specimen without indication of exact locality. 



Scales in 19 rows; ventrals 146, anal entire, subcaudals 62/62. 



36. Lachesis puniceus (Boie). 



Three specimens without indication of exact locality. 

 a. Scales in 21 rows; ventrals 147, anal entire, subcaudals 43/43. 

 h. Scales in 21 rows; ventrals 149, anal entire, subcaudals 40/40. 

 c. Scales in 21 rows; ventrals 144, anal entire, subcaudals 44/44. 



