1 2 
MEMBRA ClDsE. 
PTERYGIA. RUBICUNDA, n.s. 
(Plate XII. fig. 2.) 
Obscure ferruginous red ; pronotum with two dorsal spinous bumps, the anterior 
process the smallest; suprahumerals erect, rather short, and blunt at their tips ; 
body sparsely spotted with white ; tegmina ferruginous, with a faint white bar across 
the middle ; metopidium convex and finely spinose ; first and second tibiae spatulate, 
greyish and spotted; third tibia long and rather slender. 
Size 5x4 mm. 
From the Miers Collection. 
Habitat. —Brazil. 
The insect recalls P. spinula from the Philippine Islands. 
PTERYGIA UROPIGII, n.s. 
(Plate XII. fig. 3.) 
Black ; pronotum finely spined, with two suprahumeral horns, broadly expanded 
at their tips; a white streak proceeds from each shoulder to the apex of the pronotum, 
which is remarkable from the large development of the caudal end into a naked horn, 
set at right angles. There is also a smaller spined tubercle, placed more over the 
dorsum. The streaks are dotted with black points. 
Another broad white patch commences under the shoulders, and is continued 
below the tegmina, which are very weak ; so much so as to lead almost to the belief 
that this insect was in the pupal stage. The presence, however, of small ocelli 
renders this immaturity unlikely. 
Eyes ochreous; legs black, the first pair powdered with white. 
The chief character of this insect is the process or hump at the posterior 
extremity, and the small development of the wings, &c. 
The dorsum and the anterior processes are all clothed with small black spines. 
Size 6x5 mm. 
Hope Collection (Bates). 
Habitat. —Amazons. 
PTERYGIA SPINULA, n.s. 
(Plate XII. fig. 4.) 
Pronotum carinated and densely tuberculate, studded more or less with short 
black spines, interspersed with small ochreous papillae ; the anterior part furnished 
with two llattish processes, which rise above the shoulders, truncated and spreading 
