90 D. W. COQUILLETT. 



tlirax morlo and Mancia nana. These latter s[)ecimens prove verj' 

 conclusively that this cross-vein is adventitious, and therefore not to 

 be relied upon as a generic character. It therefore follows that the 

 proposed genera Dipalta, Stonyx and Isojyenthes, must be regarded as 

 synonyms of Anthrax. 



It may be remarked that those specimens of Anthrax in which 

 this cross-vein is present can readily be distinguished from the genus 

 Exoprosopa, which also has such a cross-vein, by the fact that the 

 third joint is not furnished with a distinct terminal style, which is 

 present in the last-named genus, and is separated from the third 

 joint by a distinct, transverse suture. 



Hemipenthes. — This was founded upon a species of Anthrax having 

 distinct pulvilli, but in establishing this genus Dr. Loew overlooked 

 the fact that the type of the genus Anthrax (the European A. morio) 

 also possesses distinct pulvilli, and, indeed, was one of the species 

 mentioned by him as being a type of his genus Hemipenthes ; it will 

 thus be seen that these two genera, having the same species as the 

 type, are one and the same, Hemipenthes giving way to Anthrax, 

 which has priority. 



Triodites is a synonym of Aphcebantus, as stated by the writer in 

 the May number of the " Canadian Entomologist" for the year 1886. 



Lomatia elongata Say forms the type of a new genus, Agnotoimjia 

 Williston, which this author refers to the Leptidae. 



Leptochilus being pre-occupied in the Hyraenoptera, has been 

 changed to Epacmus by Osten Sacken. This genus cannot be sepa- 

 rated from Aphcebantus by the absence of pulvilli, as the last-named 

 author attempts to separate it in his table referred to above, but is 

 easily distinguished by the strongly projecting, concave face, this in 

 Aphaibantus being convex and more or less retreating. 



Coynastes O. S. is a synonym of Meter ostylum Macq., which, by 

 right of priority, must be retained. 



Epibates O. S. is a .synonym of Thevenemyia Bigot, which has been 

 changed by its author to Thevenetimyia (Ann. Soc. Ent. de France, 

 Ixi, page 325). 



Dischidns Loew and Aynidus Wied. These two genera have not 

 heretofore been recorded as occurring in North America, but in the 

 last-mentioned work Bigot refers a single species froni this region to 

 each of these genera ; his Dischisttis fiiscipes (1. c, page 369) appears 

 to be the well-known Sparnopolius fulvus Wied., while his Amictus 

 auripilus (1. c, 372) appears to belong to Eclimus. 



