— 76 — 



equal in length, the tibio-tarsal tubercle of the adpressed bind lirab 

 reacbes a little beyond the tip ot' the snout; the sides of the head and 

 the axillary region is light; the tarsus (except the outer margin) and 

 the whole under surt'ace of the foot are brownish black. Also in other 

 points, as well regarding the colour, as regarding the structure of the 

 skin there are small discrepaneies but on the whole the correspondance 

 even in this respect is rather close. Measurements: Length between snout 

 and vent 37 mm. From snout to the bind margin of tympanum 14 mm. 

 Breadth of head 14,8 mm. Fore limb 26 mm. Length of femur 18 mm. 

 Length of tibia 21,5 mm. Length of tarsus with 4 th toe 27 mm. 



Hyla dolichopsis Cope. 

 Blgr., Cat, Batr. Sal., p. 384. 



1 specimen, 68 mm in length between snout and vent. Diameter 

 of tympanum 4,5 mm ; diameter of disks of the fore limbs 4 mm. 



In the work quoted this speeies is said to be distinct from the 

 nearly allied H. infrafrenata Gthr. in having "disks considerably larger 

 tban the tympanum," whereas H. infrafrenata is stated to have "disks 

 much smaller than the tympanum;" in other points the two speeies 

 "agree in every 'respect. in coloration as well as in structural characters. " 

 As the above measurements prove, the disks and the tympanum are in this 

 specimen, as well as in other, examined by me, nearly quite equal, as has 

 been stated by other authors as well. Boettgee, f. i. {Seniorfs Forschungs- 

 reise 5, I, p. 111) points out that Hyla dolichopsis has: «Haftscheiben bei 

 cf genau so gross, beim Q nur wenig grösser als das Trommelfell». 

 In Termes Fuzetek 21, 1898, p. 176 Mehely states the same small 

 differences in size between the disks and the tympanum, and he regards 

 all such speeimens in which the disks are larger as H. dolicliopsis, and 

 those in which the tympanum is larger as H. infrafrenata. In this 

 manner two speeimens, the one with the disks x / 4 mm larger, the other 

 with the disks 1 / 4 mm smaller. than the tympanum, are regarded as different 

 speeies, although their habitat is the same, and in spite of their agree- 

 ment in every other respect. Of course, this cannot be right. At least, as 

 far as the New Guinean speeimens are concerned, they must be regarded 

 as belonging to one and the same speeies, and I have named this specimen 

 Hyla dolichopsis, although its disks are somewhat smaller than the tym- 

 panum and not "considerably larger." 



