Hawaiian Hemiptera. 733 
Nysius longicollis, Bl. 
A pale, dull, and pubescent species, with black longitudinal bands 
along the inner orbits and a rather wide transverse band across the 
pronotum, produced backwards in the middle as a median longi- 
tudinal band, not reaching the hind margin ; two dark lines on the 
corium, starting about the middle of its length and almost appearing 
as a single elongate mark, unless the wings are spread, and running 
into a dark line along the apical margin, the membrane smoky, 
divided by pale longitudinal lines, two middle areas being darker 
than the others; femora very conspicuously black-spotted, both 
inwardly and outwardly ; metapleura slightly concave, the upper 
angle rounded and very prominent. 
Known to me only by the unique type, but on Maui is a 
closely allied species or local form. Probably a sublittoral, 
or at least not a forest insect. 
Nysius whiter, F. B.-W. 
A more or less testaceous or yellowish-brown species, shining and 
glabrous, with a median yellow line on the head, the pronotal 
callosities not dark; metapleura quite strongly emarginate, the 
upper angle being strongly produced. There is a median dark spot 
formed along the line of union of the clavi, three along the apical 
margin of each corium and one at the base of the membrane, 
adjoining the middle one of the three corial spots. Front and 
middle legs clear yellowish, hind femora with a dark band beyond 
the middle. 
The single specimen in Blackburn’s collection is from 
Hawaii. 
Nysius delectus, F. B.-W. 
This is not the NV. delectus of Kirkaldy, that very 
common insect being left unnamed in Blackburn’s collec- 
tion or labelled WV. delectus? N. No. 100, N. No. 71, ete. 
True delectus is distinguished by the darker antennae, the 
much more strikingly marked femora, the widely black 
apices of the hind tibiae, etc. The specimens are all from 
Oahu, and I have only seen those collected by Mr. Black- 
burn. The WV. delectus of Kirkaldy is ubiquitous in the 
islands. 
Nysius blackburni, F. B.-W. 
This is WV. lichenicola, Kirkaldy, a species common on 
Maui and Hawaii, and very variable in colour. 
