180 THE ENTOMOLOGIST. 



less faintly smoky, a long dark smoky stripe on middle of membrane, 

 three or four of nervures of the latter smoky at apex. 



Short-winged form, ? . Tegmina reaching only to base of fifth seg- 

 ment, costa more arched, apex more rounded, ueuration similar but 

 shortened. Tegmina hyaline, colourless ; nervures pale testaceous 

 brownish, with blackish brown non-piligerous dots (in both forms). 



S- . Pallid yellowish testaceous. Abdomen above and beneath 

 black, apical margins and laterally more or less widely pallid. Apical 

 half of first segment and carinate edges of second segment of antenuse, 

 flagellum, basal half of frons (except the pustules) and a cloudy trans- 

 verse baud near the apical margin of the same, longitudinal stripes on 

 femora, cox« spotted or banded near the base, a large spot on each 

 pleuron, anterior and intermediate tibiae with two or three annulations, 

 apical segment of tarsi, &c., blackish or brownish. First genital segment 

 large, deeply acuteangularly emarginate above. 



$ . Like the male, but abdomen above and beneath stramineous, 

 irregularly speckled with brownish. Ovipositor, &c., blackish. Sheath 

 not extending apically so far as the " scheidenpolster." Long. 3' $ 

 4^ mill. ; to apex of elytra in long- winged form, 6^ mill. 



Hawaiian Isles : Oahu, Honolulu ; destructive to sugar-cane. 

 Is destroyed by the Reduviid Zelus peregrinus, Kirkaldy. 



I have much pleasure in naming this interesting genus after 

 Mr. R. C. L. Perkins, who has contributed more than any other 

 man to our knowledge of the fauna of the fascinating Hawaiian 

 Archipelago. As Mr. Perkins will shortly publish an exhaustive 

 account, with figures, &c., of this sugar pest, I have. here merely 

 established the genus and species. It may be added, however, 

 that the nymphs are important, as showing a dijfferent head 

 structure from the adults ; in the former the frons is somewhat 

 widely bicarinate, slightly outcurved, but subparallel, the two 

 keels remaining separate from base to apex. It is probable that 

 a comparative study of the nymphs in the Asiracinse would give 

 valuable hints as to the true affinities of the various genera in 

 this very difficult and at present unsatisfactorily disposed sub- 

 family. 



Fam. Gerrid^. 



MiCROVELIA SINGALENSIS, Sp. UOV. 



Allied to M. lorioe, Kirkaldy, but more elongate, the eyes 

 larger, different proportions to the legs, &c. 



Elongate, abdomen subparallel laterally. Blackish, with silvery 

 pilosity along the lateral margins of the head dorsad to the eye, anterior 

 margin of pronotum, coxae, femora, &c. First segment and basal two- 

 thirds of second segment of antennae, ambulacra, legs (except apical 

 segment of tarsi), stramineous. Head beneath, clypeus, rostrum 

 (except fourth segment), connexiva, and lateral margins of abdomen 

 beneath (at least basally), also apical abdominal sternite (more or less), 

 and genital segment beneath, flavescent. Apical segment of tarsi, and 

 third and fourth and apex of second segment of antennas infuscate. 

 Vertex narrowly longitudinally sulcate. Eostrum reaching to about 



