1925 ] New N emestrinidce from Rhodesia and New Guinea 
9 
short, appressed, somewhat silvery white hairs, which are more 
abundant toward the sides. Coxae and femora with long, 
yellowish white pile; that of the tibiae and tarsi extremely short, 
white; the under side of the tarsi with more abundant, reddish 
brown pile. The integument of the entire body is covered with 
a dull, dark ashy grey bloom; on the front and face the pruines- 
cence has a slight yellowish tinge, and it is much paler, nearly 
white on the ventral side of the abdomen; there are no spots 
nor stripes on thorax or abdomen. 
Head moderately flattened, much broader than the thorax; 
semi-elliptical seen from above; triangular in profile, due to the 
conically projecting face; kidney-shaped and nearly twice as 
wide as high in the middle, when seen in front. Front rather 
narrow, widest at the insertion of the antennae, where it measures 
about half the width of the eye; inner orbits distinctly converg- 
ing toward the anterior ocellus, where the front is but half as 
wide as at the antennae. Sides of the vertex slightly diverging 
behind. Ocellar protuberance short and low, about as wide as 
long, but slightly separated from the inner orbits; ocelli placed 
in an equilateral triangle; anterior ocellus over twice the size of 
each of the posterior ocelli, transversely elliptical, occupying 
more than half the width of the front. Eyes bare. Antennae 
(Fig. la) short, small, placed on the sides of the face, close to the 
Fig. 1. Stenobasipteron. Right antenna drawn from the inner side: a, S. arnoldi; b , 5. difficile ; 
c, S. gracile. 
