Tabaniden Brasiliens. 683 
Chr. intrudens WıiLuıstox (L. 8). 
Originalbeschreibung: „Female. Front opaque licht yellow, the 
vertical callosity brown, the frontal callosity oval, and shining 
amber-yellow. Antennae slender, as long as the mesonotum, yellow, 
the second joint partly and the third joint wholly brown. Face 
light, shining, reddish yellow, opaque yellow on the sides and above. 
Mesonotum deep brown, with four opaque yellow stripes, of which 
the inner pair are connected by a yellowish, somewhat variable 
dust in front, where the stripes themselves are narrow. Pleurae 
nearly black, with opaque spots. Scutellum red, shining. Legs 
yellowish red, the front and hind tibiae, the front tarsi and the 
distal joints of the posterior tarsi brown. Wings brown with the 
following hyaline spots: the distal portion of the first and second 
basal cells, the anal cell, a triangle on the hind border in the fifth 
posterior cell and another in the second posterior cell extending in 
the third; the anal angle is subhyaline. Abdomen: first segment 
wholly yellow, second segment light yellow with two black triangles, 
their apex in front; third segment black or dark brown with a 
median yellow stripe; fifth and following segments black or brown 
with three narrow yellow stripes. Length 9 mm. 
Male. First antennal joint a little thieckened. Mesonotum 
darker colored, the inner pair of stripes not connected by yellowish 
dust. Abdomen black, the first segment on the sides, the broad 
anterior angles of the second segment, a slender median stripe be- 
sinning on the second segment, and a slender lateral stripe distally, 
licht yellow. Hyaline spots of the basal and posterior cell smaller. 
Three females and one male, Chapada, Brazil.“ 
Diese Art unterscheidet sich nur durch die Flügelzeichnung 
von dem offenbar sehr nahe stehenden molestus WIED. und erucians 
Wien. 
53. Chr. brasiliensis Rıcarvo, 2 (Fig. 53). 
„Length 9 millim. 
Type (male), Amazons (Bares); type (female), Rio Tapayos 
(Bates); on female from Parä (Bares); one female from the Ama- 
zons (BATES). 
Several of these specimens were labelled frontalis Macq. by 
WALKER, incorrectly. 
Brown. Abdomen with a small yellow-haired triangular spot 
Zool. Jahrb., Supplement X. 44 
