1910.] MR. T. M. S. EXCiLISll OX TASMANIAN FUOGS. 627 



Plate L. 



Fig. 25. Caudal fin of Gobius paganeUus. Note the large auiouiit of cavtilage 

 entering into the skeleton. 



26. Caudal fin of Callioni/mus li/ra. A very advanced form of homocircy with 



no coxiiplications. 



27. Caudal fin of Scorpcena scmfa. Intermediate between a lowly and a highly 



specialized honioceical caudal. 



28. Caudal fin of Trigla Uneata. Figure drawn from a cleared specimen, 



showing well the ve.stige of a urostyle. 



29. Caudal fiu of Cristiceps argentatus. 



30. Caudal fin of Ophidium barhatum. The caudal proper is confined to the 



rays attached to the terminal hypural bone. Note tlie cartilaginous shaft 

 fused to the posterior side of the neural and luemal arches of the pen- 

 ultimate vertelira. The median fins form a continuous series. 



31. Caudal fin of Mastacembelus sp. ? Forms part of continuous median fin, 



but the caudal proper is wholly hypaxial. 



32. Caudal fin of Lnphins piscatorius. The extreme case of advanced homo- 



cercy — a totally hypaxial fin. 



33. Caudal fin of Salistcs capriscus. 



2. Some Notes on Ta.snianian Frog.s. 

 By T. M. Savage English*. 



[Received March 10, 1910.] 

 (Plate Ll.t) 



Taking into con.siclei'ation it.s outlying pot^ition and its com- 

 paiatively small size, Tasmania is the home of a surprisingly 

 large number of frogs. 



Seven species have come under my own observation, and it is 

 abovit these that the following notes were made in the years 

 1901-3. These species, all of which, I believe, are also found in 

 the neighbouring State of Victoria, are : — 



1. Limnodynastes tasmaniensis. 



2. Limnodynastes dorsalis. 



3. Crinia signifera. 



4. Crinia Iceuis. 



5. Pseudophryue bibroiiU. 



6. Ilyla eioingii. 



7 . Ilyla aurea. 



No others than these seven have come under the notice of 

 Ml". J. J, Fletcher (Proceedings of the Linnean Society of 

 N. S. W. 1897, p. 662). He and others, including myself, have 

 tried in vain to find Crinia iasmaniensis, and Mr. Boulenger 

 considers that, though this is beyond doubt a well-marked species, 

 thei'e is reason for thinking that the specimens of it which have 

 belonged to the Biitish Museum since 1858 may not have come 

 from Tasmania. 



* Communicated by G. A. Houi.enger, F.R.S., V.P.Z.S. 

 t For explanation of the Plate see p. 634. 



