[81] 



Report of the State Entomologist. 



223 



triangular projection which makes the edge of the tarsus appear 

 serrate; hence its specific name. It was the Hcematobia (Lyperosia 

 Rond.) serrata of Rob. Desvoidy. 



The determination of the specific name had been made by his 

 friend, Mr. F. Kowarz, to whom some of the specimens were sent, in 

 consideration of his superior knowledge of European Diptera. He 

 had written that " the most careful comparison has not disclosed any 

 differences between the American and the European specimens of 

 this fly." 



European Bibliography of the Fly. 

 Baron Osten Sacken, with his accustomed kindness, also com- 

 municated the European bibliography of the insect herewith given, 

 together with the following remarks upon the generic terms employed 

 therein, which will be appreciated by the scientific student : 



As there are several other species of Hcematobia in existence, 

 Rondani formed the genus Lyperosia (Prodr., etc., i. p. 92, 1856) for 

 those of them which have the arista beset with hairs on the upper 

 side only, and the end of the first longitudinal vein opposite the small 

 cross-vein. In the remaining Hsematobise the arista shows some few 

 hairs on the under side also, and the first longitudinal vein reaches 

 beyond the small cross-vein. 



The genus Priophora was proposed by R. Desvoidy (in his posthu- 

 mous work, Hist. Nat. Dipt., etc., 1863) for H serrata, on account of 

 the structure of the hind tarsi in the male. Robineau [Desvoidy] did 

 not know of Rondani's publication ; nevertheless Priophora and 

 Lyperosia are not synonyms, and are based on different characters, 

 viz., Priophora on the male hind tarsi, Lyperosia on the mode of hairi- 

 ness of the arista and on the venation; Priophora, in Robineau, con- 

 tains the single species serrata ; while Rondani's Lyperosia contains 

 serrata and irritans. 



Doubt Expressed of its Introduction. 

 Prof. J. B. Smith, of the New Jersey Agricultural Experiment Sta- 

 tion, in a recent publication on the fly (loc. cit), expresses his belief 

 that it is not an introduced species, and that there is no real reason 

 for supposing it to be other than an American form which abnormal 

 circumstances have raised to the rank of a temporary pest. It is but 

 just to Prof. Smith to state that the opinion was expressed, and the 

 MS. name of H cornicola given it by Dr. Williston, accepted without 

 the knowledge of the positive identification of the fly with the H. 

 serrata of Europe, from the examples sent by me for comparison, as 

 above stated. It is also learned from Dr. Williston, that his quite 

 recent publication of Hcematobia cornicola new sp., was also made in 

 ignorance of the above determination — since unhesitatingly accepted 

 by him. 



