OF WASHINGTON. 251 



Holoclera Schiner, Wiener Ent. Monat., iv, 53, February, 

 1860. 



Type : Holoclera pulchra Egger. 



Schiner designated as the type the above species which at that time was 

 evidently undescribed. 



Hormopeza Zetterstedt, Ins. Lappon., 540, 1838. 

 Type : Hormopeza obliterata Zetterstedt. 

 The above was the only species mentioned. 



Hybos Meigen, Illiger's Mag., u, 269. 1803. {Lactistomyia 

 Melander, 1902.) 



Type: Musca grossipes Linne. 



Meigen mentioned no species. Curtis* designated as the type Hybos 

 funcbris Fabricius (= Musca grossipes Linne, according to Walker, f re 

 peated by Schiner).^ 



Hydrodromia Macquart, Hist. Nat Dipt., n, 658, 1835. 



Type : Heleodromia stagnalis Haliday. 



Macquart described two species, Heleodromia bipunctata Haliday and 

 //. stagnalis Haliday. Mik transferred H. bipunctata to his new genus 

 Ko-varzi(i. 



Iteaphila Zetterstedt, Ins. Lappon., 540, 1838. 

 Type : Iteaphila macquarti Zetterstedt. 

 The above was the only species mentioned. 



Kowarzia Mik, Verb. k. k. Ges. Wien 1881, 325, 1882. 

 Type : Clinocera barbatula Mik. 



Mentioned four species and figured a wing and the head of the first one, 

 Clinocera barbatula Mik. 



Lactistomyia Melander, Trans. Am. Ent. Soc., xxvin, 250, 

 Nov., 1902. (= Hybos Meigen, 1803.) 

 Type : Lactistomyia insolita Melander. 



Described one species as new, L. insolita, from Brazil. The characters 

 on which this genus was founded are the thickened and tuberculate hind 

 femora of the male, but in the males of one species in the related genus 

 Eukybus these characters are present but are wanting in the females, as 

 well as in both sexes of closely related species. The characters therefore 

 are not only confined to one sex but are plainly not of generic importance. 



Lamposoma Becker, Berl. Ent. Zeitsch.. xxxm, 338, 1889. 

 Type : Lamposoma cavaticum Becker. 



The above was the only species mentioned. 



* Brit. Entom., 661, 1837. 



f Ins. Brit , Dipt., i, 120 



+ Faun Aus.. Dipt., i, 78. 



Verb. k. k. Ges. Wien 1881, 325, 1882. 



