SYNOPSIS OF NORTH AMERICAN SYRPHIDiE. 265 



Ceria scutellata, n. sp. 



HaMtat. — Mexico ! 



9 . Length, 9 to lO"*'". Dark reddish black. Peduncle of antennae 

 short, scarcely a third the length of the first joint; second joint not 

 much longer than the third. Antennae and peduncle brownish red. 

 Vertex, small orbital spots nearly opposite base of antennse, and on the 

 sides of the face, a pair of stripes beginning a little below the base 

 of the antennsB and somewhat converging to the oral margin, and two 

 on the cheeks, yellow. Dorsum of thorax black; a small spot on the 

 humeri, a smaller one on the outer end of suture, a slender intra-alar 

 vittula, reaching nearly to the suture, a large trapezoidal spot in front 

 of the scutellum, and the scutellum wholly, yellow. Pleurae dark red, a 

 median vertical vittula, and a spot on sides of metanotum, yellow. 

 Base of second segment of the abdomen, and its posterior margin, and 

 that of the next segment, yellow; second segment very narrow near 

 the base, but broad behind. Legs dark brownish red. Wings brown 

 in front, nearly hyaline behind. 



One specimen, Isthmus of Tehuantepec (National Museum, Professor 

 Eiley's collection). 



ADDITIONAL NORTH AMERICAN SPECIES. 



Ceria nigra. — Mexico. 



Sphyximorpha nigra Bigot, Anuales Soc. Ent. de Fr., 1883, 317. 



Ceria rufibasis. — Mexico. 



Sphi/ximorj)lia rufibasis Bigot, ibid., 318. 

 Ceria arietis Loew, Neue Beitr., i, 17. — Mexico. 

 Ceria Daphn^us Walker, List, etc., iii, 537; Westwood, Trans. Ent. Soc, v, 231, pL 



xxxiii, fig. 7; Loew, Neue Beitr., i, 18. — Jamaica. 

 Ceria cacica Walker, Trans. Ent. Soo. N. S., v, 287.— Mexico. 

 Ceria tricolor Loew, Wien. Ent. Monatschr., v, 37. — Cuba. 



