668 FAUNA HAWAIIENSIS 



Kieffer gives as a character of Cothonaspis (s. 1.) "cupula non convexe," but in all 

 or nearly all the Hawaiian forms it is more or less convex and sometimes very strongly 

 so. Only in the species, for which 1 have formed the subg. Nesodiranchis is the 

 scutellar cup depressed. 



Under the circumstances, I think it better to place all the Hawaiian species with 

 more or less open marginal cell (excepting the one just referred to) in a subgenus 

 Hypodh^anchis Ashm., treating this as a section of Cothonaspis. Ashmead's characters 

 for Hypodiranchis will not fit most of the species here described, nor in fact do the 

 examples he described agree with the generic characters he laid down. In the sense 

 used here, Hypodiranchis will refer to a division of Cothonaspis in which the cup of the 

 scutellum is generally more or less convex, sometimes strongly so, and never impressed, 

 and the antennae of the female are without a definite club. 



I find it impossible to refer males, caught at large, to their proper females with any 

 certainty and therefore have described none of this sex. Had I done so the list 

 of species would have been much increased, but no doubt many or most of the names 

 given to males would become mere synonyms of previously described females. By 

 breeding, or special collecting in the field, the sexes will no doubt be rightly assigned in 

 the future. 



I may note that several species of parasitic Cynipids have been introduced into the 

 islands for economic purposes, but these are not considered in this account. 



Cothonaspis Hart. 



Nesodiranchis, subgen. no v. 



Like Diranchis, as defined by Ashmead, in most characters, but with the antennae 

 not at all clavate, the more basal flagellar joints being larger and longer than those at 

 the apex, so that the antennae become distinctly attenuate towards the tips. Third 

 antennal joint slightly longer than the fourth, all of these beyond the pedicel being 

 elongate, the sides slightly rounded, the surface very finely striate or rugulose rather 

 than fluted, fourth and fifth joints about twice as long as wide, apical joint about one 

 and one-half times the length of the preceding. Scutellar cup large, ovate, depressed, 

 the posterior fovea large, transverse ; marginal cell in front wings entirely open above, 

 cubitus effaced, represented by a hair line ; abdomen about as long as the thorax, with 

 a slight hairy girdle at base, hypopygium not conspicuously prominent. 



(i) Cothonaspis {Nesodiranchis) ashnieadi, sp. nov. 



Black, the mandibles, the two basal antennal joints (and the third obscurely) red ; 

 legs yellow, tarsal joints mostly black. Neuration brownish towards the base, but the 

 radius darker, the last abscissa black or almost so. 



