145 
cpposite margin.’ In the male the-scrobal impression: is deeper 
and less ' rounded above, the antennae somewhat shorter; the 
pedicel longer, stouter and equal to the first funicle joint in 
length, the head much more coarsely sculptured. 
To Hypergonatopus belong two species, hithertofore placed 
in Echthrogonatopus, viz. E. hawatiensis Perkins and Microter\s 
molokavensis Ashmead. I am greatly indebted to Dr. James 
Waterston of the British Museum for carefully comparing 
specimens of hawatensis from the Hilo district of Hawaii with 
Oahu specimens, and for furnishing copious notes drawn up 
irom the type of molokaiensis. It is hardly necessary to add 
that his assistance has greatly facilitated my work on the genus, 
which otherwise could not have been carried out as fully. 
Much more recently Dr. Perkins has returned the female type 
of hawatiensis to the Islands, and I have thus had opportunity 
to study it personally. 
The following synoptic tables may help in distinguishing 
the species. 
FEMALES. 
1. Head unusually thick; the wings truncated at apex of the stigmal 
vein and reaching only to the middle of the abdomen; legs 
ONO MIM ich ra eaee CNS Sonia chanel cs pstar on MMIC tc ete eGR Pate ote s carole Sersta tiene 6 
Head moderately thick; the wings fully developed; legs mostly 
Inlalckashyetaexcicrsccie = e's att. SGA OCA CIO OSH OD Oe As DOOR ON ASA ADEA oOsie6cc 2 
2. Wings comparatively broad, about 2.6 to 2.7 times longer than 
wide; frontovertex about two and one-half times longer than 
UAC] GPE ot Secret abo RANT. ccs cea sae cote Mica a auerrenstei Sealy ars pcrajs ie. ie ate Tae Ms Gea atens 3 
Wings very narrow or about 2.9 times longer than wide; front- 
overtex about thrice as long as wide,. marginal vein about thrice 
as long as the stigmal; apex of middle tibiae and middle tarsi 
brownish yellow, knee-joint of middle legs, apex of front and hind 
tibiae and corresponding tarsi brownish or sometimes somewhat 
CLO WUS TI aie ny sVorsia satiate: ke wrcrtaas gt anche leas Fea et hawatiensis (Perkins) 
3. Legs distinctly brownish, somewhat paler towards the tips of the 
tibiae and on the tarsi, the apical third of middle tibiae and the 
MA CIORtREST VellLOWISR. oa aita ails fe Satine ys. <ciseea ts Soe ee Wate: 5 
Legs almost wholly blackish, except middle tarsi. and tibial spur; 
the. apex: of middle tibiae only slightly yellowish................ 1 
4. Facial ridge between antennae not completely dividing the scrobal 
impression; scutellum abruptly declivous at apex, its dise more 
densely pubescent; marginal vein typically about twice as long as 
the stigmal vein, the latter nearly straight and not greatly en- 
LAR OCC e ah OR am antec ANGE % Sic a iais lg Sas ofa's > vuleanus n. sp. 
