71 
MEMBRA C ID JE. 
spots; legs large, robust, with the tibise slightly spatulate ; tegmina brown ; wings 
hyaline. 
Size 5x5 mm. 
Hope Coll. : Westwood. 
Habitat. —Manila, Philippine Islands. 
PTERYGIA D^EMONIACA, n.s. 
(Plate XI. fig. 6.) 
Uniformly black; very spinose; pronotum dilated between the suprahumerals, 
which are flattened, scooped out, and truncated at the tips ; the dorsum witli an 
erect blunt tubercle, much spined ; head large; clypeus foliaceous and more fuscous 
in colour; fore and middle tibise only slightly spatulate; hind-legs prismatic; 
tegmina short and obtuse at the tips. 
Viewed from the side this insect has a spiteful appearance, whence the specific 
name above given. 
Size 7x6 mm. 
From the Wollaston Coll. 
Habitat. —A m azons. 
PTERYGIA SATANAS, Fairm. 
(Plate XII. figs. 1, la.) 
Fairm. l.c. p. 261; Trayopa satanas, Lesson, Ill. Zool. pi. LVI., fig. 2. 
Whole insect densely black, variegated with dead-white furry patches, punctured 
with black; frons leaf-like, longer than broad; suprahumerals flat, expanded at the 
tips, and serrated at the edges ; dorsum spinous, inflated above the head, and Taised 
at the back into a hump, which is continued to the apex just beyond the length of 
the tegmina ; tegmina black, with ochreous tips ; abdomen stout and mealy ; tibise 
spatulate, densely white, and dotted; tarsi brown. The insect has a curious piebald 
appearance. The figure is from that of a female similarly labelled from the B.M. 
Collection. 
In the Hope Collection at Oxford there is an insect marked P. bituberculata , 
Fowler, which appears to me to be identical with the species marked P. satanas, 
Fairm., in the B.M. Collection. This species has certain similarities to Pterygia 
crassicornis, but it has only one dorsal process. 
I have no doubt that my insect from Brazil is identical with that figured in the 
B.C.A. as P. bituberculata from San Juan, Vera Paz. 
I have examined a fine specimen kindly lent me by Canon Fowler, which more 
closety approaches my drawing than that figured by him in the B.C.A., which is 
represented by the artist much too white. 
