388 THE NORTH AMERICAN EMPIDM—COQUILLETT. vol.xviii. 



course lias already been adopted by Dr. Schiner and the British ento- 

 mologists. 



Synaniphotera. — This genus is not as yet known to occur in our fauna; 

 in the single species, 8. bicolor, referred to it by Loew, the third vein is 

 simple, and not forked; judging from the description, this species 

 apparently belongs to the genus Sciodromia, Haliday, not heretofore 

 reported as occurring in our fauna. 



Hemerodromia. — The species catalogued under this name are very 

 heterogeneous, and in the present paper they are separated into three 

 genera, viz: Mantipeza, Rondani, Hemerodromia., Meigen, and a new 

 genus for which the name of Keoplasta is proposed. I have followed 

 Eondani in restricting the genus Hemerodromia to those forms in which j 

 the discal cell is united with one of the other cells, since this author ' 

 appears to have been the first to dismember the old genus. i 



Since the publication of the above-mentioned catalogue, three new 

 genera of Empidre have been proposed, viz, Miithicomyia, described by 

 the writer,^ and Enoplempis and Megacyttartis, published by Bigot.'^ j 

 JEnoplempis was known to the author in the male sex only. Specimens I 

 of what is evidently the S])ecies described by him as Enoplempis cinerea^ 

 were collected by the writer in southern California. The females do { 

 not difier in any respect from typical species of Empis, and therefore 

 should not be separated from it. Both Loew and Schiner have described t 

 under Hmjris forms structurally identical with Enoplempis. I 



The genus Megacittarus, Bigot, was founded on a single female speci- 

 men without antenna'; this is evidently the female of Rhampho my ia 

 limbata, Loew, specimens of which are in the National Museum collec- i 

 tion from the same locality (Colorado) as the type of Meg acittar us, and 

 were evidently from the same collector (Morrison). As the male of , 

 B. limbata does not difier in any respect from a typical Rhampliomyia, 

 this proposed new genus must be regarded as being synonymous with 

 the latter. 



In the following pages four new genera are established, viz : Neoplastay 

 Empimorpluij Enliybtis and Neocota; and two or three genera not here- 

 tofore known to occur ill our fauna have been recognized, viz : Manti- 

 peza, Rondani, Sciodromia, Haliday (probably), and MegJiyperus, Loew. 



The genus Hilarimorpha, Schiner, has by some authors been placed 

 in the present family, but it has much more aflinity with the Leptid;ie^ 

 to which family it has already been referred by Osten Sacken. Besides i 

 the analogies mentioned by this author as existing between Hilarimor- 

 pha and the other genera of Leptida*,^ may be mentioned as a common 

 character the entire eyes, as opposed to the eyes deeply emarginate: 

 opposite the antennte, as they are in the Empida;. 



' Entomological News, IV, June, 1893, p. 209. 



2 Bulletin des Stances de la Soci^t6 Entomologique de France, 1880, p. 47. 



3Loc. cit., 1882, p. 91. 



< Berliner Entomol. Zeitschrift, 1890, XXXV, p. 303. 





