576 FAUNA HAWAIIENSIS 



(i) P hrynomorphus hospes, Kirkaldy. 



Deltocephalus hospes Kirkaldy, 1904, Entom. xxxvii. 177. 



Phrynomorphus hospes Kirkaldy, 1907, Bull. H. S. P. A. Ent. iii. 60, PI. i. 



figs. 13—17- 

 The last nymphal instar is described and figured in the work last cited (p. 13). 

 This introduction from Australia and Fiji feeds here on Cynodon dactylon. 



Tribe Eurvmelini. 



There do not appear to be any of this tribe in the Hawaiian Islands, the two 

 species collected by Dr Perkins and referred by me to Bythoscopus, belonging really to 

 the genus Nesophryne. 



Stal described two species, B. peregrinans (referred to incorrectly on p. 1 1 5 of 

 vol. III. as B . peregrimis) and B. vidiius from Oahu, but erroneously\ 



B . peregritians v^a.s described from Tahiti, Oahu, California and Rio de Janeiro. 

 It has been since recognized as an Agallia (sens, lat.) by Berg and recorded from the 

 Argentine Republic ; recently Osborn and Ball (now the highest North American 

 authorities on Homoptera), believe that a species from California answers to Stal's 

 description ; they place it close to A. sanguinolenijis, which is an Aceratagallia. It is 

 perhaps a little doubtful however whether the same species actually has this distribution 

 from Vancouver to the Argentine. It is well known that the localities recorded in the 

 " Eugenies Resa" are often quite inaccurate and as B. viduzis is recorded from Tahiti 

 as well as Oahu, and as nothing like either peregrinans or viduus has ever been recorded 

 from the Hawaiian Islands, both may safely be expunged from the Hawaiian lists. 



Fam. ASIRACIDAE. 



The Hawaiian Asiracidae are, as regards the endemic, arboreal forms, characterized 

 by the spur of the hind tibiae being solid, subcultrate, with rather large teeth ; a 

 condition known, in outside faunas, only in Proterosydne arboricola Kirkaldy, from 

 Queensland. 



In this family, the male genitalia are of the highest specific, and even generic, 

 importance ; hence in these islands, as in other countries, females are often very difficult 

 to determine, unless taken with the males. The colour and pattern of the nymphs are 

 generally of specific value. 



The genera in Hawaii may be separated as follows, but I must remark that 

 Nesosydne is probably heterogeneous. A considerable proportion of the species, how- 

 ever, is known only in the brachypterous state, if indeed these latter forms are ever 

 macropterous, and I therefore prefer waiting a little before founding the probably 

 necessary new genera. 



' Cf. Kirkaldy, 1907, A. S. E. Belg. li. 



