18S3.] 125 



but of some I had no examples for examination, and, therefore, can- 

 not express an opinion on them. Some have been separated on the 

 differences occurring in the origin of veins 3 and 4, and also 6 and 7 

 of the hind-wings. In some North American species, there is so much 

 variation in the origin of these veins, that it would not be safe to 

 establish a genus until a large number of individuals had been 

 examined, and the question settled whether the venation in that 

 species was variable or not. Mr. Meyrick may have done this, and 

 in that case his genera will, without doubt, be retained. In some 

 cases genera have been separated on slight palpal differences, the 

 desirability of which is doubtful. 



Of the European genera of Tortricids, only representatives of 

 Capua, Steph., Dlchelia, Gueu., Cacoecia, Iliib., Tortrix, Linn., Anti- 

 thesia, Steph., Penthina, Tr., Uudemis, Hiib., Aphelia = Bactra, Steph., 

 Stigmonota, Guen., Carpocapsa, Tr., and Crocidosema, Zell., have thus 

 far been found. 



There hardly seems to be good reason for the use of the two 

 names Jntithesia and JPenthina. The latter name was first proposed 

 by Treitschke, in 1829, with salicana, S. Y., and several other species 

 following. In 1830, the same author characterized this genus and 

 enlarged it, putting Bevayana the first under it, but he does not specify 

 any particular one as the type. Bevayana has since been removed, 

 and put into the genus Sarrothripa, and salicana has been taken as 

 the type of Penthina, which, I think, is correct. 



The name Antithesia, was first proposed by Stephens, in 1829, in 

 his " Systematic Catalogue of British Insects," with the type corticana, 

 and in his " Illustrations," 1834, where he characterized the genus, he 

 suppressed the name Penthina, not because of the priority of Anti- 

 thesia, but because Treitschke had introduced a species belonging to 

 another genus, which Stephens was disposed to regard as the type of 

 Penthina. Meyrick credits Antithesia to Guenee, but Guenee, in his 

 " Index Methodicus," gives corticana as the type. 



Now, salicana and corticana are structurally alike, and cannot 

 possibly represent two different genera ; therefore, I see no good 

 reason for using both of these names ; and as they were both proposed 

 in the same year, and as Penthina was characterized four years earlier 

 than Antithesia, I prefer to adopt Penthina, and allow the other to 

 fall as a synonym of Treitschke's genus. Mr. Meyrick thinks he 

 finds generic differences in the species he has placed under these two 

 genera. "Whether that be so or not, I do not think he can be justified 

 in using both these generic names. 



Eudemis botrana, S. V., that cosmopolitan pest of the grape, is 



