250 Mr. G. W. Kirkaldy's Memoir upon the 



Vertex short (lialf tlie lengtli of tlie pronotum), about 4 times as wide 

 as the eyes together. Face vertical, kmg triangular, gen;e insigniA- 

 cant. Pronotum constricted at the middle and collared anteriorly, tne 

 collar wide and lobate, projecting anteriorly over the base of the 

 head, anteriorly elevated, apical margin sinuate ; callose behind the 

 collar near the lateral margins, collar and anterior lobe widely sub- 

 reflexed laterally ; posterior lobe diverging rotundately, | wider at 

 base than the apical margin of the anterior lobe. Posterior lobe and 

 elytra minutely punctured. Elytra reaching far beyond apex of 

 abdomen, the membrane apparently with one cell only. 



9. H. gdastops, sp. nov. (Plate V, fig. 2.) 



Vertex, face, scutellum (except black lateral margins), ventral 

 surface, etc., pale sanguineous. Clypeus, collar, anterior lobe of 

 pronotum, lateral margins of pronotum and of elytra, coxte, etc., pale 

 flavous. Eyes, upper margin of peduncles, pronotal callosities, 

 brownish. Posterior lobe of pronotum (except lateral margins), 

 elytra (except lateral margins) — lilack. 



Long, nearly 6 mill., lat. 2^ mill. 



Hah. Mexico, Guanajuato. 



10. Sy sinus Jlorididus, Distant. 



Brazil, Sta Catbarina. The 1st segment of the antennae 

 is somewhat incrassate towards the apex. 



11. NcofnriiLS aurora, sp. nov. 



Very close to N. amethystus, Distant, but larger and differently 

 coloured. Head, collar, anterior lobe of pronotum (except a thin 

 median scarlet line), 1st segment of antennic and extreme base of 

 2nd, legs (except the scarlet-tinged posterior femora), apical § 

 of cuneus, and membrane (except extreme base) — pale luteous. 

 Elytra, pronotum and anterolateral part of scutellum — scarlet ; 

 remainder of sciitellum, clavus (except base), interomedian part of 

 corium, bluish-black. Eyes reddish-black. Underneath luteostra- 

 mineous. Covered (especially on elytra and scutellum) with short, 

 close, pale yellow hairs (not pubescence) ; tibi;e shortly pilose. 

 Pronotum closehj punctured. 



Long 4i mill. 



Hah. Amazons, Itaituba. 



In this species the vertex is glabrous, shining and 

 rounded ; in a.0nis. Distant (the only other species of the 

 gonus I possess), of which I have a variety from Ecuador, 



