On tilt' Prolnminn of the Tonjue of the Anura. 50l 



inoratcil witli umI, tlu' tliicknesa of tin; irroratioiis giviiii^ a 

 (lark sliadi" to tlie co.stji, i\\\A broadly so to the outi'r marginal 

 bonier; a black clot at the en<l of cell ; aiitetnedial and j)')st- 

 medial transverse brown lines or thin bands, nearly erect but 

 very sifinous, almost zi;j:;z:tg ; the disc with three rows of very 

 fine black points, not always visible to the naked eye : hind 

 wings ochreouM grey, outer margin broadly smeared with dark 

 red-grey; an indistinct sinuous medial brownish line ; cilia of 

 both wings with the inner half orange, the outer half white, 

 divided by a brown line : underside brownish grey, whitish 

 on the hinder border of fore wings; a sinuous, indistinct, 

 brownish discal line across both winjrs. 



Lxpanse of wings ,Hy inch. 



Sarawak, Borneo. 



Rather variable in shades of colour; so:ni! of my very 

 long series are much paler and yellowish, nearly all the 

 females are paler and more yellow th;m the males. 



There is one example in the B. M. from Borneo unjiamed. 



Allied to R. ochreipennis^ Moore, and R. transversa, Moore. 



Rhesala lavisy nov. 



cJ . Pectus white; top of head and fore part of thorax 

 whitish, rest of thorax and fore wings shining pink-grey, with 

 an ochreous tinge, with sparse grey irrorations ; a black dot 

 at the end of cell ; two indistinct blackish transverse discal 

 lines, with some black dots on them ; blackish points also 

 close on the veins to the outer margin; cilia ochreous grey, 

 with pale ends : hind wings pale ochreous grey, darkest on 

 the outer half; cilia jjale pink, with white ends : underside 

 of a uniform pale ochreous grey, shining, without any 

 markings. 



Expanse of wings 1 inch. 



Coonioo, Queensland. 



1 here is an example of this species unnamed in the B. M, 

 from West Australia (Quadritidai, drawer 224). 



[To bo continued.] 



LXIII. — The Mechanism oj' the Protrusion of the Tomjue of the 

 Anura. — Preliminary 2Sote. By Prof. Makcus Haktug, 

 M.A., D.«c., F.L.H.* 



FuK an explanation of the mechanism whereby the Anurous 

 liatrachia protrude and reverse their tongue one nwiy seek in 



• Tra'jslftt<?d bv the Author and sli^rlitly moditicd. From the ' Comptes 

 R»>ndu3 de I'Acad^mie des Sciences,' March 4, li-HJl. 



