genera and species of Hijmenoptera. 189 



scutelluin coppery behind the transverse line. Abdomen 

 violet. Wings hyaline, a large smoky cloud in the apical 

 half; humerus with a few scattered bristles. Length, 

 2 mm. 



Hah. Oahu (No. 55). 



SoLINDENIA, n. g. 



Antennae 13-jointed, situated a little below the eyes ; 

 2nd joint one-half of the length of the 3rd ; 4th a little 

 longer than 3rd ; 5th and 6th subequal ; 7th a little 

 shorter ; 8th a little longer than 6th ; 9th a little shorter 

 than 7th ; last joint compressed strongly at the side, 

 becoming gradually thickened. Eyes pilose, oval, con- 

 verging at top, reaching to the back part of the head, 

 beyond which they project. Ocelli in a triangle ; front 

 ridged above the antennae. Antennal sutures not very 

 deep. Head much broader than thorax, rather flat, 

 longer than broad. Mesonotum margined at the side ; 

 scutelluin broad at base, in front of it the mesonotum is 

 hollow to near the middle, and the hollow is continued 

 from there as two furrows to the pronotum. Scutelluin 

 broad, almost transverse in front ; behind it becomes 

 narrow and rounded. Metanotum hollow in the centre. 

 Base of abdomen hollow in the centre, margined at side ; 

 2nd segment incised at side, longer than 3rd ; 4th shorter 

 than it ; last rounded, oval, much longer than preceding. 

 Anterior femora broad at apex, flattened; middle slender ; 

 posterior stouter, narrowed at base. Middle tibiae longer 

 than tarsi, which are thickened, setose at base ; meta- 

 tarsus not much longer than the apical joint ; spurs 

 three-fourths of its length ; there is only one spur on 

 the tibia. 



The hairy eyes and broad scutelluin at base allies 

 this genus to Calosoter, but the front ridged at the 

 insertion of the antennae, setose tarsi, much longer and 

 converging eyes, readily separate it. Its nearest allies 

 are some undescribed neo-tropical forms. 



Solindenia picticornis, n. s. 



Eeddish testaceous, shortly pilose ; head black above 

 the insertion of the antennae ; apex of mesonotum bluish ; 

 metanotum more or less violaceous ; pleura in front 

 fuscous. Abdomen broadly white at base, the apex 



