190 THE CANADIAN ENTOMOLOGIST. 



Mochlonyx, if not the same, is at least congeneric with that of Corcihra ; 

 in other words, Loew applied the former name to the wrong division of 

 Corethra, in consequence of which his proposed new generic name is a 

 pure synonym of the latter. 



Owing to the mistake of Loew, it will be necessary to give a new 

 generic name to the group representing Corethra, Loew (not Meigen), and 

 for this genus the name Sayottiyia is proposed, in honour of the immortal 

 Thomas Say ; it will be readily recognized among the short-beaked Culi- 

 cidse by having the hair? of the antenn?e gathered into whorls, the inter- 

 vening spaces being almost bare, and by having the first tarsal joint 

 longer than the second. The type species is Corethra punctipeiinis, Say. 



The genus Corethra ( = Mochlonyx) has not yet been reported from 

 this country. Several years ago I received a specimen from Mrs. Annie 

 T. Slosson, collected at Franconia, N. H., and later two more specimens 

 were received from the same source, while in April of the present year the 

 same species was detected at Mt. Vernon, Va., by Mr. W. V. Warner, of 

 the U. S. National Museum. This species will readily be recognized by 

 its banded legs and mottled wings, and may be characterized as follows : 

 Corethra cinctipes, new species. 



Blackish brown, the apices of the antennal joints except the last joint, 

 the halteres, bases of the segments of abdomen in the male, base and 

 under side of femora, a broad band near four-fifths of their length, their 

 extreme apices, bases of tibii?e and a band near one-fourth of their length, 

 also bases of the first three or four joints of the tarsi, yellow; hairs of male 

 antenna? brown, their bases yellow, those at tips of antennae almost wholly 

 yellow ; thorax grayish pruinose, marked with four black vittae ; wings 

 grayish hyaline, hairs of veins black and with yellow ones as follows : on 

 the bases and ajiices of the veins, on the first vein where the second issues 

 from it, on the second vein where the third issues from it and at the point 

 where it forks, on the fourth vein at the insertion of the cross-vein and also 

 where this vein forks, and on the fifth vein where it forks ; first sub- 

 marginal cell nearly twice as long as its petiole, cross-vein at apex of 

 second basal cell less than its length before the one above it.; tarsal claws 

 of male each bearing two long, slender teeth on the under side, one near 

 the base and the other near the middle, those of the female with a single 

 tooth near the base of each ; length, 3 to 4.5 mm. Five males and one 

 female. Type No. 6839, U. S. National Museum. 



