268 New Geometridae and Dioptidae in Joicey Collection 



central line only suggested by some ill-defined scaling of a rather deeper 



shade. 



Cameroons : Bitje, Ja Kiver, October, wet season (G. L. Bates). 



Curiously similar to Peratophyga trigonata Walk, (from Borneo), 

 except for the lack of luteous vertex, front of thorax and base of costa ; 

 Walker does not notice the golden central line of the luteous band, but 

 it is present in his species. 



Family DIOPTIDAE. 



24. Phanoptis miltorrhabda sp. nov. 



$ , 40 mm. 



Head and body black, with a tinge of brown. 



Fore wing moderately elongate, but rather fuller in the anal region 

 than in typical Phanoptis ; black, proximally and posteriorly with a 

 tinge of brown ; a very oblique red band of about 2 mm. width from 

 middle of C, crossing the base of SC 1 and the whole of DC 4 and ter- 

 minating just beyond M 2 near termen ; SC, SC 1 and M 2 somewhat 

 blackened on the band, which moreover is slightly indented with black 

 distally at the other veins ; a slightly curved row of three small 

 slightly hyaline whitish spots between SC 5 and E 3 , the last the smallest 

 and weakest. Hind wing black with a tinge of brown. 



Underside similar, the fore wing paler at hindmargin, the red band 

 a little broader and paler. 



Peru : Chanchamayo. 



Keferable to Phanoptis by my " Key " (Nov. Zool. xxv, 396) and by 

 no means unsuitable there in spite of the more opaque scaling and 

 slightly less elongate wings, with the cells less narrowed at their 

 extremities. Evidently drawn off by mimetic association with the 

 butterflies Actinote erinome Feld. and Eresia castilla Feld. 



25. Myonia euryzona sp. nov. 



$ , 32 mm. 



Structure and general coloration of head and body as in leechi 

 Prout ; abdomen above much less vividly shot with blue. 



Fore wing shaped as in leechi, or slightly more elongate still ; 

 proximal area black, with the principal veins slightly dusted with 

 capucine yellow ; a capucine yellow central band, 4 or 5 mm. wide, 



