BY J. J. FLETCHER. 673 



series were examined, it should be found that this allowance was 

 insufficient. As a matter of fact some of the Victorian and other 

 specimens do seem to ha\e a smaller t^^mpanum than usual, about 

 one-third that of the eye. One such specimen is of especial 

 interest, inasmuch as the vomerine teeth are normal on one side, 

 but absent on the other. Of two other Victorian specimens one 

 (half-grown) appears to have the vomerine teeth not perceptibly^ 

 de\eloped; the other has them on one side strongly develojjed, on 

 the other only slightly. Other instances of abnormal vomerine 

 teeth, not including Crinia, have come under notice. In three 

 only out of six or seven species of Limnodynastes do the vomerine 

 teeth normally extend outwards beyond the choanse. Three out 

 of my four Tasmanian specimens of L. dorsalis, and three out of 

 four variegated Sydney specimens of the same species have the 

 vomerine teeth even moi'e extensively developed than in specimens 

 of those species in which the extension beyond the level of the 

 choanse is normal. If L. dorsalis were known only from unspotted 

 specimens with normal vomerine teeth, and spotted or variegated 

 examples like all but one of mine were then discovered, it would 

 be a very pardonable supposition in the absence of intermediate 

 forms that two distinct species were really represented. H. 

 parvidens is known only from a single example, which may ver}^ 

 well have been only a light-coloured specimen of H. eivingii 

 without definite bands or streaks, with imperfectly developed 

 vomerine teeth, and with a smaller tympanum than usual; and 

 if so the name H. pai-vldens would become an absolute synonym 

 of H. ewingii. 



9 bis. H. KREFFTii, Gthr. — Mr. Boulenger's doubt is not as to 

 the identity of the species but as to the correctness of the locality 

 label. My experience would lead me to suppose that Mr. 

 Boulenger probably had a Tasmanian example (especially if 

 collected by Dr. Milligan) of //. ewingii a little more webbed 

 til an he was accustomed to see. 



10. H. AURKA, Less. — H(d). : Burine, Emu Bay (Miss Lodder). 

 Three specimens with a light vertebral stripe, as is common in 

 western examples. 



