1881.] 59 



well developed thorax and long wing covers, the tail of the abdomen 

 tapering to rather a prolonged blunt point ; in colour of a darkish 

 warm brown, darkest on the thorax and anal point, the surface of the 

 wing-covers and lower rings of the abdomen shining. 



Emsworth: July 12th, 1881. 



NOTES ON THE SPECIES OF OPHTHALMOPHORA, A GENUS OP 

 GEOMETFJD MOTHS. 



BY ARTHUR G. BUTLER, F.L.S., F.Z.S., &c. 



The genus Ophtlialmopliora was founded by M. Guenee in the first 

 volume of his " Uranides et Phalenites," for the reception of six 

 beautiful species of moths, having upon the upper surface of their 

 wings metallic, golden and silver lines and ocelli : the first three of 

 the species described are supposed, though with doubt, to be from 

 Brazil ; none of them appear to be in the British Museum, though 

 allied to 0. elysiata. 



The fourth species recorded by M. Guenee is O. corinnaria, a, very 

 pretty little species allied to O. formosanta of Cramer, and, if I am 

 correct in my identification of the latter species, more nearly allied 

 than M. Guenee supposed : unfortunately, we possess no examples of 

 the genus from Surinam, but, judging from an example of what I take 

 to be O. formosanta, obtained by Dr. Trail on the Kio Negro, I should 

 say that the chief differences in M. Guenee's species were the less 

 defined (sometimes even obliterated) pale costal border to the pri- 

 maries, and the distinctly ocelloid character of the oval marginal spot 

 of the secondaries. 



If we set aside the close affinity of 0. corinnaria to O. formosanta, 

 which must, for the present, be open to question, the next point for 

 consideration is, whether it is possible to separate specifically the form 

 described and figured by Herr Snellen under the name of O. lyonetaria. 



Herr Snellen says that O. lyonetaria " is distinguished from all 

 the recognised species by the clear dark grey front wings with uni- 

 colorous front margin ;" in two specimens of O. corinnaria which we 

 have from Santarem, one has a whitish costal border as in Guenee's 

 figure, the other has lost it as in Snellen's figure ; yet, in every other 

 respect, the two examples are almost identical ; such being the case, 

 I cannot think that the two so-called "species " are more than sports 

 of one type. 



