168 BARBOUR: ZOOGEOGRAPHY. 



the two groups. The Ke Islands support many forms which have passed from 

 Papua to the Moluccas, while the Aru Islands, probably geologically much 

 younger, support few species which Papua has in common with the other 

 islands, Ceram for instance. 



Still more recently Fry (Rec. Aust. mus., 1912, 9, p. 87-106, pi. 8-9) has 

 described several species of a new engystomatid genus, Austrochaperina, from 

 Queensland. This most important discovery emphasizes what has already been 

 said about the Papuan element in the Queensland fauna. A feature so promi- 

 nent as to demark this region sharply from the rest of Australia and to really 

 permit of our considering Queensland as practically a zoologic dependency of 

 Papua. 



At the last moment, after this paper was in page proof, I received from Dr. 

 Boulenger a notice entitled "On some tree-frogs allied to Hyla caerulea." (Zool. 

 jahrb. Suppl., 1912, 15, 1, p. 211-218). This affects one species which is 

 referred to frequently and others less often mentioned. Hyla dolichopsis 

 (Cope) becomes a synonym of Hyla infrafrenata (Giinther). The latter was 

 described from a young Australian example and the former from a Moluccan 

 adult. Dr. Boulenger forestalls what I have said regarding the characters of 

 the variety tenuigranulata Boettger; this form can not be recognized. The 

 other variety, pollicaris, described by Werner is a synonym of the valid species 

 Hyla militaria Ramsay, the type of which also came from New Britain. Hyla 

 aruensis Horst becomes a synonym of Hyla infrafrenata (Giinther) so that its 

 anomalous distribution, Aru Islands and Mysol, is quite insignificant. Dr. 

 Boulenger also relegates van Kampen's Hyla sanguinolenta to the same category. 

 Two new species are described Hyla spengeli and Hyla humeralis, the former is 

 described from a single female and the latter from two males. Both forms are 

 very close to, if really distinct from, Hyla infrafrenata. A long and most in- 

 teresting table of measurements of specimens of Hyla caerulea and H. infra- 

 frenata is also contained in the paper and the series shows that the former, 

 usually considered an Australian species pure and simple, occurs in the Owen 

 Stanley Mountain range of British Papua along with its near ally, Hyla infra- 

 frenata. 



