DUTCH BORNEO-EXPEDITION. 191 



bordering the patagium, a series of somewhat larger, conical 

 scales, as is generally to be met with in specimens of D. 

 fimbriatus, and differs in this respect from Boulenger's 

 description of the typical specimen of D. cristatellus, where 

 is stated that no lateral series of enlarged scales is to be 

 seen in that specimen. Still it may be doubted whether one 

 may in every instance be guided by the presence or absence 

 of such a series of enlarged scales. One of our specimens 

 of D. fimbriatus (a very large female, already mentioned 

 by Schlegel in his » Abbildungen") shows only two enlarged 

 scales on each side of the back. 



I find another reason for doubting the distinctness of 

 the species D. cristatellus in the presence in our collection 

 of two specimens of D. fimbriatus, one from Sumatra and 

 one from Java, with crested tail; the crest in the Javanese 

 specimen is formed by a series of elevated scales, lying 

 consecutively one behind the other, and all larger and 

 higher than the enlarged scales of the lateral series of the 

 back; the crest in the Sumatra-specimen is formed by still 

 larger scales, which however do not follow each other con- 

 secutively, but are separated from each other by one, two 

 or three scales which are neither elevated nor enlarged. 



16. Goniocephalus liogaster Gthr. 



One half-grown specimen from Sambas, summit of Damoes 

 (1200 M.), collected by Dr. Hallier. 



17. Goniocephalus grandis Gray. 



One female-specimen, collected by Dr. Nieuwenhuis on 

 the Upper Mahakkam. 



18. Goniocephalus spec. 



One very young specimen from the Upper Mahakkam. 



19. Japalura nigrilabris Ptrs. 



One specimen from Sambas, Kampong' Damoes, collected 

 by Dr. Hallier, another by Dr. Nieuwenhuis on the Upper 

 Mahakkam. 



20. Japalura ornata Lidth. 



One specimen by Dr. Nieuwenhuis from Long Bloe on 

 the Upper Mahakkam. 



.Notes from the Leyden Museum, Vol. XXV. 



