118 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Acraga caretta Dyar. 



Acraga caretta Dyar, Proc. U. S. Nat. Mus., xxxviii, L'HS, 1!U(). 



This species is white, without a trace of the yellow color. 

 The dark markings have become nearly marginal. This is 

 apparently allied to Dalcera ampela Druce and D . alba Druce, 

 but both these species are unknown to me in nature and may 

 not even be congeneric with the present form. 



Acraga flava Walker. 



Dalcera flava Walker, Cat. Brit. Mus., v, 1107, 1855. 



Caviria sulphurea Burmeister, Desc. Rep. Arg.,v, 517, 1S7S. 



Dalcera flava, Burmeister, Desc. Rep. Arg., Atlas, 53, pi. xxiv., 

 fig. 3, 1879. 



Caviria sulphurea Kirby, Cat. Lep. Het., 434, lsit 



Dalcera flava Kirby, Cat. Lep. Het., 542, 1S92. 



Epipinconia flava Dyar, Journ. N. Y. Ent. Soc., vi, 233, IS! IS. 

 Described from Rio Janeiro. My specimens are from Petro- 

 polis and from Castro, in the State of Parana, Brazil. The 

 species is bright sulphur-yellow, but is peculiar in having nu- 

 merous transverse shining bands, due to the scales being set 

 at different angles on the wing. No other dalcerid known to 

 me has any such appearance, though it occurs in the megalo- 

 pygid genus Carama and in the Hparid genus Caz'iria. Bur- 

 meister gives the following notes upon the larva: 



Mon fils Henri 1'a obtenu de la chenille et m'ecrit que la chenille a 

 presque un pouce le long, qu'elle est plane en dessous, legerement con- 

 vexe en dessus et couverte de pleusieurs series de verrues coniques 

 gelantineuses qui tombent quand on les touche, meme avec la plus grande 

 precaution. Le corps de la chenille est vert. Les verrues ont la trans- 

 parence du verre, elles sont incolores, et formees par uhe exudation de 

 . la surface du corps, sans avoir avec lui un contact parfait. 



The statement that the appendages are formed by an exu- 

 dation from the surface of the body appears to me to be prob- 

 ably a wrong interpretation of the structures. More probably 

 we have to do with a further development of the peculiar mod- 

 ification of the subdorsal horns seen in the cochlidian genera 

 Phobetron, Alarodia, aud hocluetes. I have shown how these 

 appendages, which are only modifications of the subdorsal 

 warts, become in these genera successively more and more 

 detachable, culminating in hochirtes. This larva is already 

 green and the horns transparent, like glass, so that it only 

 needs a little further modification, by the loss of the hairs, to 

 produce the larva above described. It is unfortunate that no 

 larvae are available to test the above hypothesis. 



