HEXACH ATA. 403 
2. Hexacheta amabilis. (Tab. XI. fig. 16, wing.) 
Trypeta amabilis, Low, Monogr. Dipt. N. Amer. iii. p. 219°. 
Hexacheta amabilis, Gig|.-Tos, Mem. R. Accad. Sci. di Torino, ser. 2, xlv. (sep.) p. 59’. 
Hab. Mexico}, North Yucatan (Gaumer). 
Five specimens of this species (four males and one female) have been received from 
Yucatan. 
3. Hexacheta socialis. (Tab. XI. fig. 17, wing.) 
Trypeta socialis, Wiedem. Aussereur. zweifl. Ins. ii. p. 491°. 
Hexacheta socialis, Gig].-Tos, Mem. R. Accad. Sci. di Torino, ser. 2, xlv. (sep.) p. 59”. 
Tephritis major, Macq. Dipt. Exot., Suppl. 2, p. 93, t. 6. fig. 6°. 
Hab. Mexico?, Atoyac in Vera Cruz (H. H. Smith).—Brazin? 3. 
Two females. They agree with Wiedemann’s description, except that the colour of 
the head and thorax is a clearer rufous, and the middle and hind femora are blackish 
on the basal two-thirds. The front is as broad as the eyes, a little narrowed towards 
the base of the antenne; there are three pairs of frontal bristles. The pleure, save 
their anterior part, and the metanotum are black; a yellow stripe runs from the 
shoulders to the root of the wings. The abdomen is yellow, with black front-borders 
to the segments; on the sides there are black bristles; the ovipositor is as long as the 
preceding three segments together, conical, shining black or brown. ‘The blackish 
stigma does not show a white dot. The small cross-vein is on the middle of the 
discal cell. 
The Mexican specimens before me have a length of 6°5 millim.: Wiedemann! 
gives 3, and Macquart® 4:5 lines. Nevertheless, Low’s synonymy (Monogr. Dipt. 
N. Amer, ili. p. 219) seems to be quite correct. 
4. Hexacheta pulchella, sp.n.,¢. (Tab. XI. fig. 18, wing.) 
Yellowish-rufous ; abdomen with black stripes; wings brown, with hyaline spots and many incisions, two 
of which are between the ends of the second and third veins; small cross-vein on the middle of the 
discal cell. 
Length 5°5 millim. 
Head rufous ; front a little broader than the eyes, with nearly parallel sides; frontal bristles black, those on 
the vertex stouter; face pale rufous; oral margin slightly prominent. Antenne rufous; third joint 
elongate, rounded at the tip, reaching to beyond the middle of the face: arista black, somewhat pubescent. 
Proboscis and palpi rufous. Thorax, including the pleura, scutellum, and metanotum, rufous; on the 
latter two dark longitudinal stripes. Abdomen convex, rufous, with black lateral stripes and some black 
dorsal spots; ovipositor very long, conical, brownish-black, its apical joint lanceolate, rufous. Legs 
rufous; front femora with a row of bristles on the underside. Wings rather broad, the costa slightly 
convex; in the black stigma a white line along the end of the auxiliary vein and a small white dot at the 
tip; the brown coloration has several incisions—one immediately beyond the stigma, two between 
the ends of the second and third veins, one at the tip of the wing, between the third and fourth veins, 
and some others of irregular shape in the second and third posterior cells; in the vicinity of the base 
3 f 2 
