Barbowi — New Lizards and. New Toad from Dutch East Indies. 19 



perfectly distinct forms under one name. A fully adult specimen from 

 ('cram agrees perfectly with the topotype taken by the Albatross. These 

 two specimens, however, are different from two other adults which 1 shol 



neat' W'eeda, I lalnialiera ; and from the others, which came from various 

 localities in the southern Philippines. Judging from what Max Weber 

 says (Zool. Erg. Reise Ned.-Ind., I, 1890, p. 167), we may conclude that 

 the examples from Celebes represent another distinct form. We have 

 then in the genus as it stands at present, 



Hydrosaurus amboinensis (Schlosser), from Amboina and ('cram. 



H. weberi sp. now, from Halmahera. 



II. microlophus (Bleeker), from Celebes. 



H. pustulosus (Eschscholtz) from the Philippines. 



For the sake of comparison with the description of //. weberi, sp. now, 

 I add here a similar diagnosis of the specimen from Ceram. Unfortunately 

 no examples from Celebes are available for study, though we may expect 

 a full description of //. pustulosus (Esch.) when Dr. Stejneger publishes 

 his " Herpetology of the Philippines." 



A few notes on the main diagnostic characters of this species are also 

 added, thank- to Dr. Stejneger's courtesy, and with his permission. 



Hydrosaurus amboinensis (Schlosser). 



Described from an adultmale, M. ('. Z. No. 7oii4, taken at Pirn, Ceram, 

 February :;, li>o7, by T. Barbour. 



Head small; snout rather elongate, strongly compressed, with a very 

 inconspicuous longitudinal crest of enlarged scales in the male. Vertical 

 diameter of tympanum contained exactly twice in the distance from the 

 anterior border of the eye to the posterior limit of the nostril. Upper 

 head scales minute, very Strongly keeled, larger in the frontal region than 

 between the eyes; pillar scales small, granular and of very unequal size; 

 a series of enlarged scales on each side, parallel with the lower labials, 

 beginning at the mental and extending backward, decreasing gradually 

 in size until 1 hey disappear almost opposite the posterior border of the 

 eye. Dorsal and nuchal crests continuous, composed of compressed. 

 straight, lanceolate spines on the nuchal region, and of backward-curved, 

 almost falciform, spines on the sacral region; the dorsal crest beginning 

 at the shoulder region and extending backward about half way to the 

 sacrum, is composed of small, inconspicuous scales much less in size than 

 those of the nuchal or sacral areas; dorsal scales small, imbricate, keeled, 

 the keels directed upwards and backwards, intermixed with a very few 

 scattered, enlarged, roundish, short-keeled scales which vary somewhat 

 in size; ventral scales larger than dorsals, subquadrangular, smooth, 

 arranged in regular transverse series ; an area of conspicuously enlarged 

 scales on each side of the chest just in front of the insertion of the fore- 

 limbs. Limbs rather long; the adpressed hind-limb reaches almost to the 

 tip of the snout. Anterior face of fore-limb with greatly enlarged scales 

 in three complete rows. Femoral pores nine on one side, ten on the 



