300 THE CANADIAN ENTOMOLOGIST. 



5. Front wings with the second cubital cell receiving both recurrent 



nervures 6. 



Front wings with the first and second cubital cells each receiving a 

 recurrent nervure, or the first recurrent is interstitial with the first 

 transverse cubitus ; stigma well developed, the radius originating 

 from its middle ; median and submedian cells equal, the transverse 

 median nervure interstitial with the basal ; tibiae stout, clavate, 

 spinous, the inner spur of hind tibiae dilated Euspongus, Lepel. 



6. Submedian and median cells equal ; stigma large or well developed, 



the radius originating before its apex ; hind tibije short, stout, spinous, 



the tarsi of normal length Olgia, Radz. 



Submedian cell a little longer than the median ; stigma not well devel- 

 oped, the radius originating from its apex ; $ with a distinct tarsal 

 comb ; hind legs long, their tarsi fully twice as long as the tibire. 

 Head with the eyes not convergent on the clypeus, but convergent 

 posteriorly ; abdomen not or scarcely longer than the head and 

 thorax united, the first segment strongly coarctate, dorsal seg- 

 ments without white pubescent bands at 



apex Mellinogastra, Ashm.. n. g. 



(Type G. mellinoides, Fox.) 

 Head with the eyes convergent on the clypeus, divergent pos- 

 teriorly ; abdomen longer than the head and thorax united, the 

 first segment long, petioliform, subcoarctate, the dorsal segments 

 banded with a whitish pubescence at 



apex Hapalomellinus, Ashm., n. g. 



(Type G. eximius, Prov.) 



North American Species, 

 (i) Mellinus, Fabr. (i) H. rufocinctus, Fox, $ . 



(1) M. abdominalis, Cr., ? ^. (2) (?) H. piceus, Hd].,(^. 



(2) M. bimaculatus,Pack., 5 c? • (6) Euspongus, Lepeletier. 



(3) M. rufinodus, Cr., $ $. (i) E. bipunctatus, Say., $ $. 



(4) M. pygmaeus, Handl., '^ $ . (2) E. Championi, Cam., 9 • 



(5) M. alpestris. Cam., ? . (7) Olgia, Radoszkowski. 



(6) M. obscurus, Hdl, ? . (8) Mellinogastra, Ashmead. 



(2) Harpactostigma, Ashmead. (i) M. mellinoides. Fox, $ . 



(3) l^NTOMOSERicus, Dahlbom. (9) Hapalomellinus, Ashmead. 



(4) Megalomma, Smith. (i) H. eximius, Prov., g $. 



(5) HvPOMELLiNUS, Ashmead. 



