598 Mr, W. L. Distant on 
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Genus PRISTHESANCUS. 
Pristhesancus, Amy. and Serv., Hist. Hém., p. 360 (1843), 
Type P. dorycus, Boisd. 
Pristhesancus inconspicuus, sp.n. (Plate X LIX, fig. 1, 1a.) 
Head, pronotum, scutellum, sternum and legs black, more or less 
greyishly pilose ; apex of scutellum testaceous ; corium pale ochra- 
ceous, the basal angle, extreme apical angle and a few irregular 
transverse suffusions, black ; membrane hyaline, longly passing the 
abdominal apex ; abdomen beneath shining, ochraceous, the first and 
second segments and the lateral margins bluish-black, the sublateral 
margins more or less suffused with piceous ; antennae pitchy-brown, 
first joint a little longer than the anterior femora; head with the 
post-ocular distinctly longer than the ante-ocular area ; first joint of 
rostrum distinctly shorter than the second; pronotum with the 
anterior lobe sculptured and with two prominent discal tubercles, 
posterior lobe with the lateral angles distinctly produced, their 
apices tuberculously spinous, the posterior angles a little lobately 
and somewhat tuberculously produced; scutellum with the disc 
distinctly, tuberculously, erectly produced, the apex slightly, 
tuberculously recurved. 
Long. incl. membr., 22 millim. 
Wataikwa River. 
Genus HELONOTUS. 
Helonotus, Amy. and Serv., Hist. Hém., p. 361 (1843). 
Type H. tuberculatus Guér. 
Helonotus versicolor, sp. n. (Plate XLIX, fig. 3, 3a.) 
Head, pronotum, scutellum and sternum, testaceous, longly, 
greyishly pilose; corium bluish-black, the clavus and subclaval 
area dull reddish, the apical marginal area pale ochraceous ; 
membrane shining hyaline, considerably passing the abdominal 
apex; rostrum, legs and abdomen beneath, black ; coxae and last 
two segments of the abdomen, testaceous; head longer than 
pronotum, post-ocular longer than ante-ocular area; antennae 
testaceous, first joint as long as anterior femora; pronotum with 
the anterior lobe robustly bituberculate, posterior lobe with two 
moderately raised discal tubercles, less prominent than those on the 
anterior lobe, the lateral angles spinously tuberculously produced, 
their apices a little directed backwardly, their posterior angles 
moderately lobately produced ; scutellum with the disc, obliquely, 
upwardly, tuberculously produced, the apex also tuberculously 
