[From the ANNALS AND MAGAZINE OF NATURAL HISTORY for 

 July 1890.] 



Notes on the Genus Dyschorista, Led., a small Group of 

 Moths allied to Orthosia. By A. G. BUTLER. 



THE genus Dyschorista was founded for the reception of tw 

 European species, D. suspecta ^ Hiibn., and D. ypsilon=fissi 

 puncta, Hew. (see Lederer, Noct. p. 143, gen. 82). 



Accepting D. suspecta as type of the genus, it will be neces- 

 sary to include the bulk of the forms referred by M. Guenee 

 to his previously characterized genus Orthodes. 



Orthodes, Gue'nee, was described in the first volume of the 

 ' Noctuelites,' p. 371, no type being indicated ; but Guene"e 

 selected two of the species, 0. t-mgrum and 0. curvirena 

 (both Brazilian), for illustration. In the description of the 

 species of his second group Guene'e pointed out that 0. cur- 

 virena differed structurally from the remainder of the genus : 

 "L'une d'elles (Curvirena) a les palpes particulierement 

 ascendants et allonges." He thus restricted the identification 

 of his type to 0. t-nigrumj the first species of his first group. 



In the Museum collection we have an example of 0. t-ni- 

 grumj and, as may be seen from the figure in the l Noc- 

 tuelites,' it has no connexion whatever with the remainder of 

 the species, but is in fact far more closely allied to Leucania; 

 fortunately the remaining species correspond with Z). suspecta 

 in size, pattern, coloration, the ascending palpi, simple an- 

 tennae, and heavily tufted anal decorations of the male. 



In his < Check-list of North-American Moths ' for 1882 

 Grote rightly reduced the number of M. Guenee's North- 

 American species, Orthodes nimia and candens being sunk as 





