198 DIPTERA OP NORTH AMERICA. [PART III. 



abdomen un peu moins gris et d'un noir plus luisant ; cuisses 

 fauves ; tibias melanges de noir et de fauve ; tarses noirs ; ailes 

 flavescentes, n'offrant que 1'apparence d'une seule macule. 

 Originaire de Philadelphie. 



(Translation.") Smaller than Meckelia elegans; frontal bristles, antennae, 

 face, red; optical bristles of a reddish-gray; thorax browirsh-gray ; 

 abdomen a little less gray and of a more shining black ; femora fulvous ; 

 tibias mixed with black and fulvous ; tarsi black ; wings flavescent, with 

 the appearance of a single spot. 



From Philadelphia. 



[It seems hardly doubtful that this species belongs to the 

 Ortalina ; it is probably either an Anacampta or a Ceroxys, as 

 Rob. Devoidy's genus Meckelia has the third antennal joint 

 excised on the upper side and ending in a very sharp angle. 

 Loew.~\ 



3. Walker, Insecta Saundersiana. 

 Page 373. Or tails Imsalis, Mas. et Foe in. 



Nigro-cyanea, caput fulvum ; antennaB luteas ; abdomen basi 

 ferrugineum, fcem. apice luteum attenuatum ; pedes fulvi ; alse 

 hyalinse, basi fulvaB, vitta antica interrupta fusca. 



Ceroxys ? Blackish-blue : head tawny ; face with a whitish 

 covering ; epistoma prominent ; mouth pitchy ; feelers luteous ; 

 third joint much deeper than the second and more than twice its 

 length ; sixth black, bare, very slender, more than twice the 

 length of the third ; abdomen longer than the chest, ferruginous 

 towards the base; abdomen of the female pale luteous towards 

 the tip, which is much attenuated; legs tawny; wings colorless, 

 slightly tawny at the base, adorned along the fore border with a 

 dark-brown interrupted stripe, which is widened at the tip ; veins 

 black; fifth vein converging towards the tip of the fourth; sixth 

 not reaching the hind border; crossveins straight, almost upright; 

 poisers pitchy. Length of the body 1| 2 lines ; of the wings 

 2 3 lines. United States. 



[It is utterly improbable that this species should be a Ceroxys, 

 as Mr. Walker supposes ; his description rather suggests that it 

 belongs to the Ulidina. Loew.~] 



