PHYSOCEPHALA. 



83 



second, fourth, and fifth segments yellowish-pollinose ; third, fourth, and fifth segments narrowfy bordered 

 behind with opaque yellow. Wings brown in front, nearly hyaline behind ; the brown fills out the first 

 posterior cell (save an oval space in front of the last section of the fourth vein), and the basal two-thirds 

 of the discal cell, extending narrowly along the front of the fifth vein to the great cross-vein., Legs 

 brown or black 5 basal portion of the tibise, especially of the hind pair, and the basal joints of the tarsi, 

 yellow or yellowish ; coxa? and tibiae with the usual silvery sheen. 

 Length 11-12 millim. 



Hab. Mexico \ Ornilteme in Guerrero 8000 feet (H. H Smith). 



Three specimens. This species is peculiar in having the face distinctly golden- 

 pollinose throughout. Because of the black face, I believe the species to be the same 

 as that described by Bigot under the name Conops nigrifacies ; I deem it worth while. 

 however, to give a description of our specimens. 



3. Physocephala sororcula, sp. n., <j $ . 



Front and face yellow ; the former with an opaque, black, shallowly V-shaped band in front of the red vertex, 

 connected in the middle by a slender line with an invertod V-shaped mark about the base of the antenuae. 

 Cheeks deep black, in front with a golden sheen. Antennse black ; the first joint, and the second and 

 third joints near their articulation below, yellowish-red ; third joint of style not elongate, the second 

 joint slender. Thorax opaque black,; a goldcn-pollinose spot at the inner side of each humerns : in front 

 of the scutellum diffusely golden-pollinose : pleural stripe not sharply limitcd. Abdomen opaque black, 

 slender ; the third and following segments diffusely yellowish-pollinose above ; the third and fourth 

 segments in the female, the third, fourth, and fifth in the male, with an opaque golden band posteriorly. 

 Legs reddish-brown, the base of all the tibiae yellow; basal joints of the tarsi yellowish. Wings brown 

 in front, nearly hyaline behind ; the outer part of the discal cell hyaline, Bave for a streak in front of 

 the fifth vein 5 a subhyaline space in the first posterior cell in front of the last section of the fourth vein. 



Length 10-11 millim. 



Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (II. H. Smith). 

 Three specimens. 



4. Physocephala xanthops, sp. n., s $ . 



Vertex obscurely red 5 below the callosity a transverse opaque black band, narrowly connected in the middle 

 with a slender, inverted, V-shaped mark about the base of the antennse. Lower part of the front and the 

 face sulphur-yellow ; cheeks brown, with an oval yellow spot in the middle. Prevailing colour of the 

 antenna3 red, the first joint somowhat, the second for its greater part, and the third joint above, black ;, 

 third joint of the style short, without bristly extremity, scarcely longer than the slender second joint. 

 Thorax opaqueblack, thinly whitish-pollinose ; a silvery- or golden-pollinose spot at the inner sideof each 

 humerus ; the white vertical pollinose pleural stripe not diffuse above. Abdomen opaque black ; second 

 segment distally, and the posterior segments above, whitish-pollinose ; third, fourth, and fifth segments 

 each with a narrow, opaque, light yellow posterior margin. Legs reddish-brown, the tibiae more distinctly 

 red, their basal portion, and the basal joints of the tarsi, yellow or yellowish. Wings brown in front 

 the distal portion of the discal cell, and a spot in front of the last section of the f ourth vein, hyaline. 



Length 10-11 millim. 



Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet, Teapa in Tabasco (H. II. 

 Smith). 



5. Physocephala ochreiceps. 



Conops ochreiceps, Bigot, Ann. Soc. Ent. Fr. 1887, p. 39 l . 



m2 



