HYMENOPTERA PARASITICA 283 



however, extensive studies in all families of the Hymenoptera have caused a radical 

 change in my views, as to the classification of these insects, and I am now convinced 

 that Haliday was right, that they have nothing in common with the Proctotrypidae, 

 that they are far removed from the genuine Proctotrypids, and that they are more 

 nearly allied to the genuine fossores. This position is also supported by the obser- 

 vations of Mr A. Busck, of the U. S. Department of Agriculture, who finds that at 

 least some of them sting the larvae of their hosts into insensibility before oviposition, 

 as the larger Aculeata do. 



The family is divided into three subfamilies, and two of these are represented 

 in the Hawaiian fauna by five genera, and one of these, namely, Sierola Cameron, 

 was supposed to be endemic, but species have been recently described from New 

 Zealand'. 



Subfamily I. BETHYLINAE. 

 Scleroderma Latreille. 



1810. Scleroderttia Latreille, Consid. Gener., p. 314. 



Males 5. 



Females. 



Species brownish-yellow or castaneous, the abdomen, however, sometimes black 3. 



Species black or piceous black 2. 



2. Abdomen longer than the head and thorax united, the sutures of the dorsal 



segments not flavo-testaceous, although faintly testaceous in some speci- 

 mens; legs mostly black or piceous brown-black, the incision of the joints 

 and the tarsi flavo-testaceous ; flagelluni most frequently brownish-yellow, 

 the scape brown, the pedicel yellow ; head oblong quadrate, not narrowed 

 behind, about one and a half times as long as wide ; length i 8 to 3 mm. 



(7 ) ^. perkinsi. 



Abdomen much longer than the thorax, the structures of the dorsal segments, 

 or at least i to 4 or 5 flavo-testaceous ; antennae brownish-yellow ; length 

 3 to 3-5 mm (•?) •S'- polynesiak. 



3. Abdomen black 4. 



Abdomen not black. 



Castaneous, the head and scutellum black or brown-black ; scape, pedicel 

 and legs yellowish, the femora and tibiae with a rufous tinge ; abdomen 

 elongate, much longer than the head and thorax united, the apice3 of 

 segments i to 5, and the terminal segment, flavo-testaceous; length 2 to 

 2-8 mm (j) S. kaalae. 



Uniformly pale castaneous ; scape, pedicel and legs yellowish, the flagellum 

 light brown ; abdomen elongate, twice longer than the thorax, the apices 

 of segments yellow ; length 3 mm {4) S. lanaiense. 



' Proc. Linn. Soc. N. S. Wales, 1900, p. 328. 



