684 An. Lutz, 
in the centre of the second and third segments, and with yellow 
bands on the posterior borders of the fourth, fifth and sixth segments. 
Face and tubercles yellow. The callosity on the forehead yel- 
low with the posterior border black, the forehead black; between 
the callosity and the vertex is a band of yellow tomentum, divided 
in the middle. Antennae yellow, the third joint darker; the first 
joint is slightly inerassated and a little longer than the second. 
Thorax brown, with indistinet stripes; the sides of the breast brown, 
with a yellow stripe. Scutellum brown. Abdomen brown, with an 
indistinet sınall pale yellow spot on each side of the first segment 
and a larger one on the second; and a triangular bright yellow- 
haired spot on the centre of the posterior border of the second and 
third segments; there is a trace of a yellow band on the posterior 
border of the third segment, which becomes distinet on the three 
following ones. Underside of abdomen brown. Legs brown, the 
anterior and middle femora almost wholly yellowish, the posterior 
femora only so at their apex; the anterior and middle tibiae like- 
wise yellowish, and the tarsi the same, with the last joints dar- 
ker; the hind ones slightly curved and covered with short pubes- 
cence. Wings clear, with the usual dark brown colouring at the 
base, on the fore border, and as a trausverse band, this latter with 
a hyaline sinus on the inner border, leaving the fifth posterior cell 
clear except at its base; the apical spot is long and narrow, the 
apical border of the band is straight; the fifth longitudinal vein is 
slightly shaded with the darker colour. 
The male is similar, but the yellow band on the third segment 
is as distinet as the others and the spots on the sides of the second 
segment obsolete; the triangle between -the base of the antennae 
and the eyes is wholly yellow; the tibiae are browner and the 
pubescence on the posterior pair thicker; the basal cells of the 
wings are darker, as usual in the males of this genus, having only 
a narrow clear stripe between them and the band.“ 
Das mit obiger Diagnose gut übereinstimmende, hier abgebildete 
Männchen stammt aus Obidos (Parä), wo ich seitdem auch zahlreiche 
Weibchen sammelte. 
54. Chr. fusciapex n. sp. (Fig. 54). 
Die folgende, weit verbreitete Art scheint von den bereits er- 
wähnten verschieden und in der Literatur nicht als besondere 
Species erwähnt. Ich gebe kurz die Hauptcharaktere der etwas 
