GEOMETRIDAE. 



147 



24. Ziridava dysorga, sp. n. 



25 mm. Head and body concolorous with wings. Palpus 2J, first 

 and second segments mixed with blackish beneath. Hind tibia with the spurs 

 not extremely unequal. Abdomen less slender than in the <$ of the genotype : 

 first somite (with extremity of thorax) black above ; further irregular brown 

 belts ; crests well developed, tipped behind with black. 



Fore wing with SC 1 anastomosing only shortly with C ; light pinkish cin- 

 namon, with deeper shadings — along the costa more vinaceous, partly (especially 

 in the cell posteriorly) bright ochraceous buff ; cell-dot minute, grey ; lines in 

 part very weak and slender ; antemedian double, oblique, slightly interrupted, 

 enclosing a narrow, glistening, grey band (in some lights vinaceous-tinged) ; 

 postmedian similar, rather less definite, slightly more oblique, retracted and 

 (especially proximally) ill-defined costally, marked at hind margin by a dark 

 spot and between the radials by a heavy blackish patch ; subterminal 

 obsolescent, but with twin blackish spots between the radials ; terminal spots 

 evanescent ; fringe somewhat olivaceous. Hind tving with termen waved; 

 SC 2 quite shortly stalked ; proximal area rather pale, with very fine lines ; post- 

 median lines obsolete anteriorly, from R 1 to abdominal margin almost straight, 

 entirely filled in with blackish ; outer lines very indefinite, the subterminal 

 developing dark interneural dots, of which the posterior three are the stronger. 



Under side with the markings more weakly reproduced. 



28 mm. SC 1 of fore wing anastomosing moderately with C. Paler, 

 nearly the colour of Asthena eurycJiora, the blackish markings of abdomen and 

 postmedian wanting, those of subterminal greatly weakened, indicated in 

 brownish. 



Upolu : Malololelei, 2,000 feet, type & 21. iv. 1925 ; allotype $, 2.vii.l924 

 (Armstrong). 



A figure of this species, in colour, will appear in Part III, Fascicle 4. 



Sauris Guenee. 



A moderately large Indo-Australian genus, consisting of about seventy or 

 eighty known species, of which several are not yet described. The present 

 genus is of great interest on account of the multiplicity of the secondary sexual 

 divergences in the although pride of place in this respect must be accorded 

 to the genera Anisodes and Sterrha, discussed above. In Sauris and the nearly 



