732 Dr. R. C. L. Perkins on 
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LYGAEIDAE. 
Nysius nitidus, F, B.-W. 
Blackburn’s specimens are from Lanai and Maui, and 
some, if not all, of them are clearly identical with J. 
saundersianus, Kirkaldy. Unless, therefore, the actual 
type proves to be different from these, sawndersianus 
becomes a synonym. JV. itidus is a common insect, often 
swarming in all stages on the Urticaceous tree, Urera, but 
it is not confined to it. It is known from all the islands, 
excepting Kauai. 
Nysius maniensis, Bl. 
This is the only type in Blackburn’s collection of Vysius 
that isin bad condition and in a fragmentary state, and it 
is one of the few previously described species that Kirkaldy 
identified (I believe, correctly) from the description. It is 
known from Hawaii and Lanai, as well as Maui. 
Nysius arboricola, F. B.-W. 
A very variable species, common throughout the 
mountains of Oahu, usually frequenting the branches of 
trees, living or dead. The variation affects not only the 
colour, but also the form and sculpture of the insect. It 
is the type of Kirkaldy’s subgenus Oceanides, and his 
specific name nimbatus becomes a synonym. 
Nysius rubescens, F. B.-W. 
I have only taken this at Kilauea, Hawaii. It was left 
unnamed by Kirkaldy, who had specimens from that 
locality. The upper angle of the metapleura is very little 
prominent, so that the emargination is slight. The hind 
femora are pale, with inconspicuous or little spotting. 
Nysius dallasi, F. B.-W. 
A pale stramineous species, with a conspicuous longitudinal black 
band on each side of the head, bordering the eyes, and the pro- 
thoracic callosities also black ; femora rather sparsely and incon- 
spicuously spotted; metapleura distinctly emarginate, but the 
upper angle is not very strongly produced backwards. Superficially 
it is most like a pallid IV. delectus. 
