432 



row, marked with a longitudinal fuscous band and several rays along 

 the margin alternating with hyaline spots ; marginal vein stout and about 

 four times as long as thick although much obscured by numerous strong 

 bristles, the stigmal vein about one-half as long, the postmarginal short 

 and spur-like. 



Male : Not known. 



Genotype: Aiuibrolcf^is cxtranca n. .sp. 



This genus is closely allicil r*^ Ihihiolcpis For.ster and 

 Adelencyrtus Ashniead, but is distinguished froui the foriner 

 by the absence of lauielliforui l)ristles on either the vertico- 

 occipital margin or apex of the scutellum and by the different 

 wing pattern, and from AdeJenci/iiiis by the Hattened dorsal 

 surface of the head, which is more acutely angled with the 

 anterior surface, and by the fuscous rays on the wings. The 

 European species, Eiicyrtus zetterstedtii , hithei'to placed in 

 Habrolepis no doubt belongs here and may be known as .1;///- 

 hrolrpis zeitevstedtii (Westwood). 



The following analysis of the desci'ibed Hahrulepis-Wke 

 genera while not entirely satisfactory, "because prepared in 

 part from descriptions only, may belp the student to distinguish 

 these interesting forms. It is rather significant that of the 

 seven genera three are represented in Hawaii l»y an immigrant 

 species. This relatively high ])roportion is ])robal)ly due to 

 the fact that the species are parasitic in common and fre- 

 quently transported scale-insects, and secondly that thelyoto- 

 kous reproduction is apparently the rule in the group and 

 thus their estaldishment in a u(>w locality is made compara- 

 tively easy. 



Characters common to tlic group of HabroIc/^is-Vike genera : 

 Head triangular in side view witli the face strongly reflexed, the 

 planes of tlie face and frons meeting in ;i more or less acute angle; 

 antennae simple and usually moderately clavatc, the funicle with four 

 or six joints; mandibles much flattened or not curved inward at apex, 

 the ventral margin with a strong preapical spine, the apex not greatly 

 narrower than the l)ase, and armed with an acute ventral tooth and an 

 obliquely inclined inner margin variously subdivided into two to four 

 additional teeth ; the vertico-occipital margin ornamented in three genera 

 with a pair of lamelliform bristles, the scutellum in four genera witli 

 one or two pairs of similar InU usually wider bristles. 



