SYNOPSIS OF NORTH AMERICAN SYRPHID^. 259 



narrowly separated. Anteimse reddish brown or blackish, about half 

 as long as the horizontal diameter of the eye, first two joints short, third 

 joint transversely oval, reddish or yellowish near the base below. Face 

 considerably concave on the upper half in the male, less so in the female, 

 with a not very prominent convexity beh)w; light yellow, opaque, with 

 a broad shining black stripe reaching from antennae to the oral margin ; 

 cheeks broadly shining black. Pile of vertex black. Posterior orbits 

 below yellow, with yellow pile, above very narrowly whitish. Thorax 

 shining black, with blackish pile on the dorsum and scutellum ; a spot 

 on the humeri, nn oval one on the mesopleur8e,aud a round one on the 

 sternopleurse, yellow ; scutellum black, yellow at the base Abdomen 

 black, with yellow bands and yellow pile ; first, second, third, and 

 fourth segments with rather narrow posterior margins; second segment 

 with an arcuate band, attenuated towards the middle, broadly interrupted 

 and separated from or narrowly connected with the yellow posterior 

 border on the lateral margin : third and fourth segments with a median 

 band, less broadly interrupted, expanded on the lateral margins to con- 

 nect with the posterior cross-band ; fifth segment in the female, with 

 three small subcontiguous black spots ; hypopygium black with yellow 

 pollen. Front legs, except extreme tip of femora and base of tibiae, 

 black, the tarsi somewhat thickened ; middle and hind legs yellowish 

 red, blackish toward the base of femora, and the last two joints of the 

 tarsi black. Wings a little brownish, especially along the veins, a 

 brownish cloud at the origin of the third vein and the outer end of the 

 second basal cell. 

 Two specimens. 



CERIA. * 



Ceria Fabricius, Ent. Sjst., 277, 1794. 



SpMximorpha Rondani, Ann. Soc. Ent. de France, ii, 8, 213. 



Of medium to large size species, slender, nearly bare, black or dark fer- 

 ruginous, with yellow bands and spots. Head somewhat flattened, a little 

 broader than the thorax. Antennae usually inserted upon a long slen- 

 der process, but the process sometimes short, or even wholly wanting. 

 Antennae much longer than the head, porrect; first joint long, slender; 

 second and third joints somewhat shorter, of nearly equal length, to- 

 gether forming an elongate oval mass, with a short pointed terminal 

 style. Face below the antennae not, or only slightly, excavated in pro- 

 file, vertical, much produced below the eyes, in outline obtuse. Eyes 

 bare, contiguous in the male; vertex angular, projecting. Thorax rather 

 long quadrangular, with yellow spots; scutellum semicircular, wholly, 

 or in part, yellow. Abdomen elongated, cylindrical, more or less nar- 

 rowed at the base, with yellow bands. Legs moderately strong, hind 

 femora somewhat elongated, tibiae somewhat thickened toward the end. 



* Ki]pia, a girth. 



