236 Journal New York Entomological Society. ["^'oL xx. 



This remarkably distinct species requires little comparison with 

 the other forms at present known. The plain brown tibic-e and the 

 remarkable venation will serve to distinguish the species at a glance. 



Explanation of Plate XVI. 



These figures show the venation, and the main features of color-pattern. 



a, wing of Brachypremna similis Williston. 



b, wing of Brachypremna dispel lens Walker. 



c, wing of Brachypremna unicolor Osten Sacken. 



d, wing of Brachypremna bret'iventris Wiedemann. 



e, -wing oi Brachypremna tvilliamsoni, n. sp. 

 /, wing of Brachypremna Candida, n. n. 



STUDIES IN ITONIDIDJE. 



By E. p. Felt, 



Albany, N. Y. 



Below we erect two new genera, describe a number of new species 

 and establish more fully the identity of one of the earlier described 

 forms. The last is to us more satisfactory than characterizing new 

 genera or new species. There are a multitude of forms in this family 

 of minute flies and much biological and systematic awaits the investi- 

 gator. References to the genus Dicrodiplosis must be considered 

 provisional, since we have placed in this group a number of dis- 

 similar forms, some of which are hardly cogeneric, because we deem 

 it unwise to attempt a division of the species till more abimdant data 

 are available. 



NEOCATOCHA, new genus. 



This remarkable form has the venation of Catocha and the greatly 

 reduced antennae of Microcerata, from which latter it is easily dis- 

 tinguished by the normal second antennal segment. The short, ses- 

 sile, flagellate antennal segments and the characteristic venation serve 

 to separate this genus from Ncptnnimyia. The type species is N. 

 marilandica n. sp. 



Neocatocha marilandica, new species. 



Female. — Length 1.75 mm. Antennae short, dark brown; 8 segments, the 



