I3 6 ENTOMOLOGICAL NEWS. [June, 



Dilophonota oenotrus. 



Sphinx oenotrus Cr., Pap. Ex. iv, T. 301, C. 1780. [f. 4, 1865. 



C? Erinnyis melancholica Grote, Proc. Ent. Soc. Phil, v, p. 77, T. ii, 



C? Anceryx janiphce Bdv., Sp. Gen. Het. i, p. 131, 1875. 



9 Erinnyis cinerosa Grote, Ann. Lye. N. Y. viii, p. 201, 1867. 



9 Anceryx piperis Bdv., Sp. Gen. Het. i, p. 132, 1875. 

 Much confusion has arisen from the careless identification of 

 Cramer's figure, but the description accompanying the plate 

 leaves no doubt as to the species represented, for attention is 

 drawn to the color of the abdomen below, which is white with 

 four black points on either side. In the species heretofore con- 

 sidered as oenotrus, the abdomen below is brownish gray without 

 any spots. For this latter form I propose the name of Dilopho- 

 nota crameri; it is well described by Boisduval in his Sphingidas, 

 p. 129, under the name of Anceryx oenotrus. D. crameri is 

 found throughout tropical America and also occurs in southern 

 Florida. 



Dilophonota domingonis. 



D. domingonis Butl., Proc. Zool. Soc. London, p. 258, 1875. 

 D. festa H. Edw., Papilio ii, p. u, 1882. 



The above names refer to the same species; it is abundant in 

 Mexico and the sexes are more similar than is usually the case in 

 this genus. This species has been considered a dark form of D. 

 obscura rhcebus Bdv., but I have examined over a hundred 

 specimens of each species without finding any intermediate forms; 

 moreover, in D. obscura the sexes are quite different. I find the 

 species of Dilophonota very constant in their markings, D. 

 crameri alone showing some variability in the color of the mar- 

 ginal areas of the primaries, the lines, however, remaining unal- 

 tered. 



Isognathus scyron. 



Sphinx scyron Cramer, Pap. Ex. iv, iv, t. 301, E, 1780. 

 Anceryx pedilanthi Boisd., Spec. Gen. Het. i, p. 124, 1875. 

 On examination of the type I find Boisduval' s species the 

 of /. scyron. 



Isognathus papayae. 



Anceryx papayce Bdv., Sp. Gen. Het. i, p. 126, 1875. 



Isognathus laura Btl., Trans. Zool. Soc. London, ix, p. 601. 

 Papaya type is the 9 , /aura type, the of the same species, 

 and both will no doubt prove to be a slight variety of /. leochii 

 Swains. 



