ANTIIOMYIDAE. 165 



thomyidae of North America (Ent. Monthly Magazine, April 

 1878, p. 250 252), I have reproduced his conclusions below, at 

 the end of each corresponding genus; compare also the note 2 ' 7 

 for the general conclusions. 



About Aricin he writes: 



The genus Policies (Kond.) of which the well-known (ouropean) 

 M. lardaria F. is the principal species, is not represented in the 

 (North American) collection. 



n ln the genus Hyctodesia (Aricia pt. Macq.). I determined 

 seven distinct (North American 1 species, several of which closely 

 resemble european, as Musca lucoriim Fall., A. lur/ubris Meig., 

 and A. obscurata Meig., but none of them, I think, are quite 

 identical." 



; ,In the genus Mydaea (Aricia pt. Macq.). I found ten species, 

 only one of which was similar to any in Europe, viz. the common 

 M. pagana F., which has a yellow scutellum.'' 



Spilograstcr. 



Macquart, Hist. Nat. Dipt. II, 293; 1835. 



*angelicae Meigen, System. Beschr. V, 117, 59 (Musca). - - Europe 

 and North America (see Loew, Sillim. Journ. 1. c. Hylemyia 

 aii<jelicae\ 



* urbana* Meigen , System. Beschr. V, 118, 60 (Musca). - - Europe and 

 North America isee Loew, Sillim. Journ. 1. c. Hylc myia urbana) ; 

 Lake Winnipeg; Connecticut. 

 tcriiiinalis Walker, Dipt. Saund., 356. - - United States. 



Observation. Mr. Meade says (1. c.): 



,,In Spiloyaster there where eleven (North American) species, one 

 or two of which closely resembled european species, but were, 

 however, distinct. One fly in this genus possessed several inter- 

 esting characters, which deserve especial notice. There was only 

 one male in the collection and it bore a remarkable resemblance 

 to Cyrtoneum (Myospila) meditabunda F. The fifth longitudinal 

 vein was curved in a similar manner towards the fourth vein, 

 though in a less degree; the spots upon the abdomen and the 

 general color, size and appearance, were also very like those of 

 that fly; but it differed in having the eyes naked and the arista 

 furnished with much shorter hairs." 



Hydrophoria. 



Rob. Desvoidy, Myod., 503; 1830. 



,,The genus was represented by three (N. A) species, all of 

 small size; one of which was similar to Musca ambigua Fallen." 

 (R. H. Meade, 1. c. p. 251.) 



Iffydrotaea. 



R. Desvoidy, Myod. 509; 1830. 



*armii>es Fallen, Dipt. Suec. Muse. 75, 86; Zetterstedt, Dipt. Scand. 

 IV, 1434, 44. - - Europe and North America (see Loew, Sillira. 

 Journ 1. c. and Meade, Ent Monthly Mag. April 1878J. 



