SAUNDERSIA. 25 
first segment with about five, and the hind margins of the following two segments with a continuous row 
of spines ; the fourth segment, except its front border, densely beset with spines; the middle portion of 
the venter with spines; anus shining black. Legs black; coxe and femora with long black bristly 
hairs ; front tibiee outwardly along their entire length with short bristles ; posterior tibie outwardly with 
long and stout bristles ; tarsi slender; foot-claws and pulvilli yellow, the claws with black tips. Tegule 
and wings rather dark brown; small cross-vein placed a little before the middle of the discal cell; apical 
and posterior cross-veins oblique and curved. 
Hab. Costa Rica, Rio Sucio, Volcan de Irazu 6000 to 7000 feet (Rogers). 
Several male specimens. This species has in its general appearance and coloration 
a striking resemblance to Dejeania rutilioides, Jaenn., from which it differs, however, 
in the absence of the long palpi, in the unicolorous (not yellowish) lateral and hind 
borders of the thorax, and in the absence of black dorsal spots from the abdomen. 
A female specimen from San Gerénimo, Guatemala (Champion), may perhaps be the 
other sex of S. ¢estacea. It agrees in almost all points with the male examples 
described above, but it is larger (19 millim.); the coloration of the scutellum and 
abdomen is less obscure and more yellowish; the front is broader; the foot-claws are 
smaller and wholly black; and the front tarsi are not dilated. 
10. Saundersia cana, sp.n., ¢. (Tab. II. fig. 2.) 
Thorax and scutellum shining black; abdomen light grey, with reflecting black spots; antenne and legs 
black ; wings dark brown. 
Length 13 millim. 
Agrees with the foregoing, but the ground-colour of the thorax and scutellum is bluish-black and that of the 
abdomen light grey; the first segment, two dorsal and two lateral spots on the second and third segments, 
and the anus are black. The spines on the abdomen are placed nearly in the same manner as in S. 
testacea ; the row at the hind margin of the second segment is, however, not fully complete but interrupted 
on both sides, and, moreover, there exist also bundles of spines on the dorsal spots. 
Hab. Costa Rica, Volcan de Irazu 6000 to 7000 feet (Rogers). 
A single male specimen. 8. cana might easily be mistaken for Hystricia albiceps, 
if attention is not paid to the absence of palpi and to the bare eyes. 
11. Saundersia bipartita, sp.n.¢ @. (Tab. II. figg. 3; 3a, head in profile.) 
Thorax, antenne, and legs black ; head and abdomen yellow, the latter with the fourth segment black; wings 
brownish-grey. 
Length 10°5-12 millim. 
Head straw-yellow ; face vertical, scarcely prominent at the oral margin ; cheeks with weak blackish hairs; 
vibrisse surmounted by some smaller bristles and followed beneath by about six others; beard yellow ; 
front narrowed behind, but broader than in the foregoing species, blackish at the sides; median band 
narrow, reddish-brown ; in the male the front with long black pilosity and many bristles, the latter descend- 
ing irregularly to a little beneath the base of the antenne ; in female the frontal bristles are less numerous 
but stouter, and the hairs shorter. Antenne black ; third joint scarcely longer but notably broader than the 
second, and rounded at the end; arista rather distinctly jointed at the base, thickened nearly to the end 
and there microscopically pubescent. Proboscis shining black, longer than the head. Thorax black, on 
the front side with cinereous tomentum and some faintly indicated dark stripes; pilosity black, rather 
dense ; bristles abundant. Scutellum piceous, with many spines directed backwards. Abdomen convex, 
BIOL. CENTR.-AMER., Dipt., Vol. II., April 18838. € 
