408 Mr. G. W. Kirkaldy on the 
Here should probably be referred two handsome Noto- 
necte from Guanajuato in Mexico (Duges in Mus. 
Paris). 
Pronotum: humeral margins longer and more sinuate than in 
type. Seutellum bluish-black, thickly furnished with short white 
pubescence. Heméelytra bluish-black, a pinkish-brown band along 
the basal half of the claval exterior margin and a similarly coloured 
spot on the basal third of the corium ; apical half of membrane 
same colour. 
Long. 11 mm., lat. 4°2 mm. 
This may, however, prove to be a distinct species. 
6. Notonecta handlirschi, sp. n. 
Hlead similar in shape to N. lutea, Miill., vertex not quite as wide 
as synthlipsis, notocephalic lateral margins fairly straight ; base of 
an eye about half as wide again as synthlipsis. Pronotwm similar 
in general shape to that of N. glauca, L., but posterior margin 
sensibly concave. Hemiéelytra: clavus and claval margin of corium 
dark castaneous, rest of corium and membrane (except apical 
margin) lurid ; exocorium anteriorly lurid, posteriorly castaneous. 
Pedes : intermediate tibial spur small and blunt. J/etanotum and 
dorsum abdominis rufotestaceous. Whole ventral surface black, 
Long. 10-10°5 mm., lat. pron. 3°5-4 mm. 
Hab. Avustratta (“ Post., A. Fischer, 1878,” Vienna 
Mus.). 
Something like NV. americana, Fabr., but with the colour 
and pattern very obscure. I have great pleasure in dedi- 
cating this species, the first true Notonecta from Australia, 
to Dr. Handlirsch of the Vienna Museum. 
7. Notonecta americana, Fabr. 
Notorecta americana, Fabr., 1775, Syst. Ent., p. 690, 
&c.; Ol., 1811, Enc. Méth., vii, p. 389; Uhl., 
1886, Checkl., p.28; 1894, P.Z.S. Lond., p. 222. 
Head rather large, notocephalic lateral margins straight, not 
very divergent from the base ; vertex varying from one and a-half 
to twice as wide as the synthlipsis. Scwte/lum rather shorter than. 
