NOVITATES ZOOLOGICAE XXV. 1918. 365 



The endings us and os might nevertheless be accepted in Apus and Apos, 

 as they were both introduced in one and the same small book by the same 

 author, so that we may well suppose that he purposely used these spellings to 

 distinguish between these two names, as was apparently done with Galerida, to 

 distinguish it from the well-known beetle genus Galerita. 



A NEW SPECIES OF OGOA. 



By lord ROTHSCHILD, F.R.S., Ph.D. 



Ogoa malagassica sp. nov. 



Nearest to oberthuri Rothsch. from the Comoro Islands. 



(J Differs from oberthuri in being cream-white instead of testaceous cin- 

 namon. Antennae intense black not dull black with shaft brown ; head and 

 thorax whitish primrose ; abdomen cream-white, anal tuft chestnut red. 



Forewings semivitreous cream-white, median shadow band sooty black, 



much less wide than in oberthuri, much less angled and somewhat sinuate. 



Hindwings semivitreous cream-white, basal half with whitish primrose hairs, 

 sooty black transverse band narrower, more promment, and further from the 

 margin than in oberthuri. Legs chestnut rufous not testaceous brown as in 

 oberthuri. 



Length of forewing : 60 mm. Expanse : 129 mm. 



Habitat : Antananarivo, Madagascar. 



