Mr. A. G. Butler on the Genus Entomogramma. 43 



Described from two male specimens, one darker than the 

 other, and differing also in the number of joints of the 

 antennae, but in no other particulars. C. sciitellata is very- 

 similar in form and structure, but the antennae are only ten- 

 jointedj not cyathiform, and the three terminal joints are much 

 less distinctly separated than in C. cyatMformis. 



XII. — Notes on the Genus Entomogramma as represented 

 hy the Noctuid Moths of that Group in the Collection of the 

 British Museum. By Arthur G. Butler, F.L.S., 

 F.Z.S., &c. 



When he founded the genus Entomogramma^ M. Guenee 

 separated the species under distinct groups in consequence 

 of their different antennal structure ; indeed, no two species 

 of the genus as originally constituted are quite alike in 

 their male characters, and one of them was considered by 

 Mr. Moore to be so dissimilar that he made it the type of a 

 new genus. The latter, however, has no higher claim tlian 

 the others to be so distinguished ; and as it would be neces- 

 sary for the sake of consistency to found a separate genus for 

 every species of the original group, provided that the secon- 

 dary sexual characters were taken into account, it seems 

 preferable to regard them, as Guenee did, merely as sections 

 of one variable genus. 



The practical common sense of this mode of procedure 

 being admitted, Mr. Hampson has called my attention to the 

 fact that various other species, differing only from typical 

 Entomogramma (in the variability of the same organs in the 

 male sex) in a similar though somewhat different manner, 

 have been wrongly described in the genera Thermesia, Phurys^ 

 &c. By adding these to Entomogramma I find that a tole- 

 rably gradational series is formed, evidently related throughout. 

 The species of Entomogramma in the Museum series thus 

 resolve themselves into eight sections, each of which differs 

 somewhat from all the others in its male structure, whilst 

 that of the female remains almost the same, excepting in the 

 case of section g, where the female is tlie modified sex. 

 These sections will now stand as follows : — ■ 



Entomogramma, Guen. 



Section a. Taramina, Moore. 

 Males with basal third of antennae dilated, outer two thirds 



