264 BULLETIN 31, UNITED STATES NATIONAL MUSEUM. 



brown, a large triangular space on the outer posterior part, nearly 

 hyaline. 

 One specimen, in the Osteu Sacken collection at Cambridge. 



Ceria superba, u. sp. 



Habitat. — Mexico ! 



$ . Length, 19'""'. Ked. Face red, witli four rather narrow, not con- 

 spicuous yellow stripes running to the oral margin ; on the lower part 

 sub-tuberculate ; on each side of the base of the antennal process with 

 a small black spot. Antennal process slender, as long as the two outer 

 joints of the antennae together. Vertex only moderately swollen. Dor- 

 sum of thorax deep red ; in front near the middle with the beginning 

 of two yellowish dusted stripes; the humeri, a spot at outer end of 

 the suture, two small spots in front of the scutellum, and a slender 

 supra-alar vittnla, yellow ; contiguous with each supra-alar vittula on 

 the inner side there is a black abbreviated stripe; scutellum yellow, 

 across the disk slenderly black ; an elongated yellow meso pleural spot 

 bordered with blackish, a spot above the middle coxae, and a large one 

 on each side of the mesonotum likewise yellow. Abdomen red, brown- 

 ish toward the end, much constricted at base of second segment ; base 

 orf second segment and its posterior margin yellow. Legs red ; the hind 

 femora blackish above at base. Wings hyaline, reddish along the front 

 margin. 



One specimen in the Osten Sacken collection at Cambridge. 



Ceria pedicellata, n. sp. 



Habitat. — Mexico ! 



(?. Length, 12'"™. Antennal peduncle short, not a third the length 

 of the first joint. Black ; antennae reddish-black, the hirger part of the 

 first joint red; first joint very slender, a little longer than the follow- 

 ing joint, the third joint about half the length of the second. Face 

 lightly i)ollinose in the middle and on the sides ; vertex, frontal orbits, 

 a small orbital spot on the upper part of the face, and a pair of facial 

 stripes, convergent and narrower below, yellow. Dorsum of thorax 

 scrobiculate ; humeri, a small spot on outer end of suture and narrow 

 base and margin of scutellum, yellow ; i)leurae wholly black. Abdomen 

 black; base of second segment on the sides, and posterior margin, and 

 the posterior margins of the two following segujeuts more narrowly, 

 yellow; fourth segment with a i^air of i)ollinose arcuate lines; second 

 segment slender, cylindrical, and elongate. Legs reddish-brown, the 

 hind femora, except the base, black, and the front legs more blackish ; 

 base of all the tibiae yellow ; hind and middle tarsi brownish-red. 

 Wings brown in front, subhyaline behind. 



One specimen (National Museum, Professor Rileys' collection). Isthmus 

 of Tehuante])ec (Sumiclirast). Is closed allied, apparently, to C. arietiSj 

 but differs in tlie fiice and ])leura'.. 



