Cameeon. — On Hymenoptera. 119 



middle. Lab rum not projecting. Areolet 5-angied, narrowed 

 cowards the top ; the base of the cubitus without a branch ; 

 the transverse basal nervure interstitial. The depression at 

 the base of the scutellum is wide and deep ; sharply keeled ; 

 the base of the post-scutellum deeply foveate laterally. 

 Median segment distinctly areolated ; the supramedian area 

 widely separated from the base ; spiracles elongated, rounded 

 at the base and apex. Legs of normal length; the hinder 

 tibiae distinctly narrowed and twisted at the base, and not 

 much shorter than the tarsi, which have the joints spinose at 

 the apex ; claws large, simple ; the inner joint of the fore 

 calcaria is stout, curved, and bluntly pointed. 



The petiole is broader and more dilated at the apex than 

 in the Oxypygi, approximating more to Eurylabus, &c. ; it is 

 even broader than in Eurylabus, and is differently formed , 

 being distinctly and somewhat triangularly raised in the 

 middle. The antennae are involute, stout, dilated somewhat,, 

 and compressed towards the apex ; the joints of the flagellum 

 are not greatly elongated. The insect is very smooth and 

 shining, and is almost devoid of pubescence. 



Zestocormus melanopus, sp. nov. 



Niger, nitidus, orbitis oculorum flavo - maculatis ; alis 

 hyalinis, nervis stigmateque nigris ; abdomine rufo, petiolo 

 nigro. ? . 



Long., fere 10 mm. 



Antennae black, the flagellum fuscous beneath beyond the 

 middle. Head black ; a yellow line above and below on the 

 inner orbits ; the face and clypeus sparsely punctured ; the 

 ocellar region aciculated ; below the ocelli is a band of curved 

 fine striae ; the front has a shallow narrow furrow in the 

 middle. Shortly behind the ocelli is a small yellow mark 

 touching the eyes. Mandibles broadly rufous in the middle. 

 Palpi black. Thorax entirely smooth and shining ; the 

 scutellum has a fuscous tinge in the middle. The supra- 

 median area is widely distant from the base of the segment, 

 is longer than broad, reaches to the base of the apical slope, 

 and is rounded behind. Legs black ; the tarsi more or less 

 dark-fuscous ; the apices of the joints spinose ; the spines 

 rufous. Areolet narrowed at the top, being there as long as 

 the space bounded by the recurrent and the second transverse 

 cubital nervures ; the recurrent nervure is received at the base 

 of the apical third of the cellule. Abdomen smooth and 

 shining ; dark-rufous ; the petiole black ; the longish sheaths 

 of the ovipositor black. 



POMPILIDiE. 



Salius monachus, Sm. 



