SS6 FAUNA HAWAIIENSIS 



third which is punctured, almost all the rest being smooth ; moreover, the clavus is 

 closely punctured. The first segment of the antennae is distinctly longer than the long 

 diameter of an eye and extends beyond the clypeus. The third and fourth segments 

 are about equally long. The impressed line on the pronotum is situated about the 

 middle (as stated on p. 245 ; a misprint occurs on p. 244 in the table). 



Nesocymus calvus. White. 



Sephora calvus, Kirkaldy, 1902, F. H. in. 162. 



Nesocymus calvus, Kirkaldy, 1907, Can. Ent. xxxix. 245. 



Hab. Oahu, at roots of herbage in the mountains, from 1500 — 2000 ft. (Perkins). 

 At the top of Tantalus (Perkins, Gififard). One of Giffard's specimens has the second 

 and third segments of the right antenna coalesced and shortened, a comparatively 

 common occurrence in the Cymini. 



Nvsius Dallas (huj. op. in. p. 162). 



In the ensuing descriptions, I have, owing partly to the fact that several species 

 are represented only by one or two carded specimens, paid no attention to the bucculae, 

 structures considered by Stal to be so important, but have used other characters which 

 appear to me better for specific differentiation. The form of the metapleura, utilized 

 here for subgenera, is considered by Stal and later authors as of generic importance, in 

 other Cyminae, but I cannot regard it as such in Nysius. Orsillus, distinguished 

 among other things by the armed fore femora, has the labium passing beyond the hind 

 coxae, Nysius being separated by the same authors by the unarmed femora and shorter 

 labium. I cannot, however, regard the length of the labium here as a generic character. 



I have therefore united all the species now described, in a single genus Nysius, 

 but have separated off two subgenera, Oceanides and Neseis. 



It is unfortunate that I have not seen the types of the species proposed by 

 Blackburn and White, and that I am unable to identify ten of them. Most of them 

 were recorded from Kilauea, Hawaii, a locality rather closely investigated on several 

 occasions by Dr Perkins and Messrs Swezey and GifTard, as well as by myself. 



Conspectus quaruTndam speciei^ufn hawaiiensium. 



I. Metapleura postice satis rotundatim emarginata, angulo exterolaterali nonnihil 



prominente, margine postica late reflexa (2). 



\a. Metapleura postice truncata, plerumque anguste, interdum late, reflexa; 



labium post coxas posticas extensum [subj. Cr^a«/«^« HOV., 



nimbato typo]. 



Labium ad metasternum extensum (3). 



Labium ad coxas posticas extensum (6). 



2. 



2(7. 



