62 Mr. A. G. Butler on Heterocerous Lepidoptera 



Specimens of this species were examined, but appa- 

 rently not described, by Monsieur Eagonot ; he probably 

 came to the conclusion that I have arrived at, that it was 

 not a Phycid. 



C. ceres may be allied to Sericocrambus stylatus of 

 Wallengren from Monte Video. 



MlTOTHEMMA, n. g. 



Allied to Themma = Tunza of Walker, but differing in 

 the simple antennae of the male, somewhat shorter palpi, 

 and the emission of the 2nd and 3rd median branches of 

 the secondaries from a footstalk. 



25. Mitothemma angulipennis, n. s. 



Primaries above pale shining gold-brown, longitudi- 

 nally striated with black between the veins ; one or two 

 small black spots in the cell, one or two beyond the cell, 

 and a marginal series ; secondaries slightly sinuated 

 between the first subcostal and third median branches, 

 thus producing an angle at the third median branch ; 

 silvery white, slightly greyish towards apex, with a mar- 

 ginal series of small black spots ; body whity-brown ; 

 primaries below shining greyish brown, with pale gold 

 reflections, white towards outer margin, where there is a 

 series of small black spots ; secondaries silvery white, 

 tinted with gold towards costa, sparsely and minutely 

 irrorated with blackish scales ; a black disco-cellular 

 spot ; an imperfect elbowed dark brown discal stripe ; a 

 marginal series of small black spots ; body below shining 

 cream-colour. Expanse of wings, 31 mm. 



" Las Zorras, in May."—! 7 . E. 



26. Mitothemma acuminata, n. s. 



Somewhat like a narrow- winged Spilodes in its general 

 appearance ; primaries above bright golden stramineous, 

 sometimes sparsely grey-speckled, and always with two 

 divergent oblique grey stripes running inwards from the 

 apex, the upper one entering the discoidal cell, the lower 

 one crossing the disc to first median branch ; a more or 

 less denned black dot at the inferior angle of the cell ; a 

 marginal series of black dots ; secondaries silvery white ; 

 traces of a faint grey discal line ; fringe pale sulphur- 

 yellow ; thorax stramineous ; abdomen cream-colour, 



