concerning exotic dipterology. No. II. 297 



says : (in Webb and Berthelot) „perhaps variety of pallida" ; the colored 

 figure however looks more like La. funebris Duf. 



I had an opportunity to examine specimens of L. pallida taken 

 near Tunis by the Marchese Doria of Genoa. 



V. Metoponia Macq. D. E. 2. Suppl. 28; 1847 (Australia) is 

 entirely different from Metoponia Loew. (North -America, Northern 

 Asia, Eastern Europe), see Catal. N. A. Dipt. p. 43. Loew has never 

 explained on what ground he assumed this identily, Recently I had 

 oceasion to examine Macquart's types in Mr. Bigot's collection and 

 thus to ascertain, that they are, generically, entirely different from the 

 N. Am. specimens, more narrow and elongate, with a more convex front; 

 to any one knowing both forms it would never have occurred to place 

 them in the same genus. Unfortunately, there were no specimens of 

 Metoponia Loew at band, to draw up a detailed comparison ; for the 

 present I must content myself with the statement of the fact. For 

 Metoponia Loew, I propose the name of Allognosta, in allusion to 

 the misunderstanding which has taken place about it. — Chiromyza 

 fulvicaput Walker, Ins. Saund. p. 163 is the same as Metoponia 

 rubriceps Macq., and it is a question wether Metoponia Macq. is not 

 more related to Chiromyza than to Beris. 



VI. Apelleia Bellardi, Saggio etc. Append. differs from Ocnaea 

 Erichs, in its glabrous eyes only. Bat as jEocetasis Walk. Ins. Saund. 

 203, Tab. 5, f. 1 also has glabrous eyes (judging by the plate, the 

 letterpress being silent on this point), and as it shows other differences 

 besides, especially in the venation, and is nevertheless considered a 

 synonym of Ocnaea, the position of Apelleia becomes rather precarious. 

 I have a new species from Central America before me which is an 

 Ocnaea, except its glabrous eyes, and therefore agrees with Apelleia. 

 In describing the latter, Prof. Bellardi compares it quite correctly to 

 Eriosoma Macq. and Exetasis Walk, and states the differences; but 

 both of these genera are considered now (since Erichson and Loew) 

 as synonymus of Ocnaea. — At present the number of described species 

 of this group is small; but they seem to be common in the warmer 

 reglons of America, and with the increase of described species a sub- 

 division may become necessary, and then the genera Apelleia and 

 Exetasis may both be reinstated again. 



VII. Hermetia chrysojjila Loew, Cent. X, 11 (Texas) 1872, 

 is the same as Hermetia aurata Bellardi, Saggio, I, 27 (Mexico) 1859. — 



Ghrysops vulneratus Rondani, Esame etc. 44 is certainly the same 

 as the well-known Chr. costatus Fab. 



