1953] 
Fairchild — Mexican Tabanidae 
45 
in trap. 1^1$ Tuxtla Gutierrez, on hotel windows. 
Tabanus (Lophotabanus) oculus Walk. 1 $ Palenque, in 
Shannon trap near ruins. 
* Tabanus {Lophotabanus) piraticus Fchld. 5 $ Palenque, 
in forest near ruins in trap and attempting to bite. 
12 $ Sta. Maria, in trap and attempting to bite in 
forest around La Puerta camp. This species somewhat 
crepuscular. 
Tabanus {Taenio tab anus) lineola var. carneus Bell. 1 9 
Tuxtla Gutierrez, on hotel window. 
Tabanus {Taenio tab anus) amplifrons Krob. 1 $ Tuxtla, 
on hotel window. 
Stenotabanus (Stenotabanus) chiapasensis n. sp. 
Fig. 1 
Female. Length 7.5-10 mm., of wing 7-8.5 mm. Eyes 
bare, in life purple to reddish brown with three narrow 
transverse bands of green or bluish green. The extreme 
upper margin is greenish purple or narrowly greenish blue. 
Frons moderately broad, about 3 times as high as wide, 
light yellowish grey pollinose. Basal callus black, nearly 
square, as wide as frons, rather protuberant and with two 
pits or dimples on the upper margin. No median callus in 
undenuded specimens, though rubbed examples may show 
a denuded streak on each side and indications of a fine 
median ridge. Vertex with a rounded fiat shiny area, but 
without swelling, tubercle or vestiges of ocelli. Subcallus, 
fronto-clypeus and genae yellowish grey, paler than frons, 
the last two with long pale hairs. Antennae orange yel- 
low, the annulate portion of third segment black. Basal 
plate longer than annulate portion, moderately wide, evenly 
rounded above. Palpi yellowish, white pollinose, beset with 
white hairs basally, black hairs apically, rather slender 
Proboscis short, hardly exceeding palpi, the labella large 
and membranous. 
Mesonotum and scutellum dark blackish brown with 
three yellowish pollinose stripes and the lateral margins 
of mesonotum and apex and margins of scutellum also 
