On the (lenus lA'piiloljuhacliiis, lUiihjtlt. W.\\ 



Table VI. 



Control CuUcctiun to Table V. 



Foniiula. NumbtT. Per cent. 



(X)()00 II i'2-2 



C)0;MX) I 1-5 



V2Mr> 17 2«r> 



\'Si(Ah) b 12o 



1(L»3)(4.'",, 10 ir,(J 



(ll.'34.'5) 14 l>oO 



Su.M.MAKY. 



The conclusions ilnuvn from tlie foregoing observations 

 are : — 



The selection of snails by thrushes is entirely liaphazard, 

 and the evidence does not suggest that one form is more 

 j)alatable than another. 



There is some evidence that many-banded specimens of 

 H. nemoralis arc more abmuhmt in bushy shaded |)Iaccs. 



As the thrushes as a rule prefer open feeding-grounds, it 

 is possible tliat this may account for the higher proportion 

 of unhanded shells at certain " anvils." 



The young thrush does not recognize and crack snail- 

 shells instinctively, but each individual probably learns to do 

 so by personal experience. 



LV. — On the Genus Lepidobatrachus, Budgett. 



V>\ (;. A. BoLLENGER, F.R.S. 



(Publislied by pemusaiou ot the Trustees of the British Museum.) 



Thk British Museum has recently received, by \\i\\ of 

 exchange -with the Cambridge ^luseura of Zoology, the type- 

 s|.«.'<imens of the proidematic Paraguayan Frogs discovered 

 by the late J. S. Budgett, and very shortly described by him 

 in the 'Quarterly Journal of Microscopical Siience,' xlii. 

 16'jI», p. 32*J, under the names of Lepidobatrachus asj/rr and 

 L. IfPvis. I seize this opportunity for exj)rcssing an opinion 

 on their systematic jjosition, which had not been dealt with 

 by the author, and for correcting some errors in which he 

 had fallen. 



I can sec no reason for maintaining the genus Lepido- 

 batrachus (et)mological justification not stated). On com- 

 paring Budgett's diagnosis with that of ('rra(nphri/.<t, cue 



