MEMBRA CID/E. 
143 
with one transverse streak ; the third lobe also has a streak on the anterior part ; 
there are no suprahumeral spines ; tegmina subhyaline, or smoky purple ; legs brown, 
the hind pair the longest; abdomen sordid ochreous, ringed with brown, and about 
half the length of the pronotum. This insect shows different hues under different 
intensities of light, and the microscope does not always quite agree with those 
colours shown by the naked eye, they seem to be intensified. The general appearance 
is very ant-like. 
Expanse, 11 x 18. 
Habitat. —B raz i 1. 
From the B.M. Collection. 
HETERONOTU8 STRIGOSA, Butler. 
(Plate XXX. figs. G, 6a.) 
Ileniconotus strigosus, Butl. Cist. Ent. II., p. 3G1 n. 0 pi. 7 f. 11 (187K). 
Colour bright vellow, with light fuscous between or in front of the suprahumeral 
horns, which are acute and slim; a dark patch and faint dark fascia cross the anterior 
lobe of the pronotum, and two opposite spots occur on the middle lobe ; the posterior 
lobe is the largest, and has one ventral and two smaller upper spines, four in all ; a 
broad, pale-brown band transversely marks the posterior node, which is globular and 
semi-transparent; tegmina clear hyaline, and shining like tale; a rather large insect 
with black eyes ; abdomen, about half the length of the pronotum. 
Size, 12 x 5 mm. 
Habitat. —Upper Amazon (St. Paul’s). 
From the B.M. Collection. 
HETERONOTUS TRINODOSUS. 
Butl. l.c. p. 357, PI. VII. fig. 8. Fowl. l.c. p. 84. Tab. VI. figs. 1G, 16a 3,1" $ . 
Dr. Butler shows that H. qiiadrinodosus, Fairm., and II. quinquenodosus, Stab, 
have been confounded with the above-named species, and Fowler identifies II. 
trinodosus with quadrinodosus of Walker, of which he states it is the male form. 
The fact of a complex synonymy points to a divergence of opinion as to what 
constitutes a node. I have before me a specimen from the Fowler collection, presumably 
trinodosa, with four distinct nodes, if we consider that to be one which has the two 
suprahumeral spines. 
It the lobes refer only to the portion before the regions of the hidden scutellum, 
three lobes would be the correct number. The sexes of the genus Heteronotus are 
difficult to determine. Fowler admits this in his description of “what I take to be the 
