ANASTREPHA.—PLAGIOTOMA. 405 
Four specimens (two males and two females). The ovipositor of the female is 
as long as the three preceding abdominal segments together, conical, not flattened, 
truncated at the tip; it is rufous in colour, with the apex blackish. The pale yellow 
stripes on the thorax, mentioned in Léw’s diagnosis, are hardly visible in the specimens 
before me. I suspect that A. munda, Schin. (Dipt. Novara Reise, p. 264), is synonymous 
with the present species. 
Léw (Monogr. Dipt. N. Amer. iii. p. 227) introduced the generic name Acrotora for 
this and certain other American Trypetinz with the fourth vein distinctly curved 
upwards near its end; but he did not notice that Schiner a few years before had 
separated Dacus fraterculus, Wiedem., under the name Anastrepha. It is true that 
this latter was intended to replace the preoccupied name Leptoxys, Macq., which was 
founded on an African ‘Trypetid with other characters. At all events, Anastrepha, 
Schin., has priority over Acrotora, Low. It is remarkable that Low, in vol. iii. of 
his ‘ Monograph,’ has totally ignored Schiner’s work, though he must have been well 
aware of it. 
2. Anastrepha tripunctata, sp.n.,¢ @. (Tab. XI. fig. 22, wing.) 
Yellowish-rufous ; tip of the scutellum and two dots on the metanotum black; wings hyaline, with yellow, 
partly infuscated streaks. 
Length 5 millim. 
Allied to the preceding species. The front is broader, though a little narrowed towards the base of the 
antenne; the thorax is uniformly shining rufous; the scutellum has a black apical spot and the metia- 
notum two black dots. The yellow pattern of the wings is very like that of A. fraterculus; the hyaline 
spot beyond the end of the first vein, however, is much smaller and does not fully reach the second vein : 
the apical half of the stigma is fuscous ; the infuscated border of the tip of the wings is broader and has 
on each side of the end of the second vein a very small hyaline dot; the oblique stripe in the apical 
portion of the wings is fully connected with the other yellow markings. The third vein is bristly as far 
as the small cross-vein. 
Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet (H. H. Smith). 
A male and a female. 
PLAGIOTOMA. 
Plagiotoma, Low, Monogr. Dipt. N. Amer. iii. p. 252 (1878). 
1. Plagiotoma obliqua. (Tab. XI. fig. 23, wing.) 
Trypeta obliqua, Say, Journ. Acad. Phil. vi. p. 186°; Low, Monogr. Dipt. N. Am. i. p. 99”, and iii. 
p- 251, t. 11. fig. 14°; Osten Sacken, Western Diptera, p. 190°. 
'Plagiotoma obliqua, v.d. Wulp, Tijdschr. v. Ent. xxvi. p. 54°; Snow, Kansas University Quarterly, 
ii. p. 162°; Gigl.-Tos, Mem. R. Accad. Sci. di Torino, ser. 2, xlv. (sep.) p. 537. 
Hab. Norta Americal‘ ®.—Mexico5’, Orizaba (H. H. Smith and F. D. Godman), 
Atoyac in Vera Cruz (Hl. H. Sinith). 
Four specimens (one male and three females). 
