182 THE CANADIAN ENTOMOLOGIST. 



Pronotuin transverse. 



Hind tibi^ with two spurs before the tip 6. 



Hind tibite without or with only one spur before the tip 8. 



6. Sheaths of ovipositor, seen from above, narrow, pointed, or of an equal 



breadth to tips ; penultimate ventral segment in ^ without, or at the 



most with a small brush-like apparatus 7. 



Sheaths of ovipositor, seen from above, broadened toward tips ; two 

 penultimate ventral segments in (^ with brush-like 



bristles Astatus, Panzer. 



(? = Eversmatmella, Jukowlew.) 



7. Sheaths of ovipositor of an equal breadth or pointed at apex; $ 



with the two penultimate ventral segments convex without 



fovece Cep/iHS, Latreille. 



Sheaths of ovipositor broadened toward apex ; ^ with the two penul- 

 timate ventral segments swollen before the hind margin, with fovese 

 filled with stiff bristles Trachelus, Latreille. 



8. Hind tibiae with one spur before the tip ; ventral segments of $ 



normal, without special characters Monoplopus, Konow. 



Hind tibitie without a spur before the tip ; three penultimate ventral seg- 

 ments in ^ clothed with stiff brush-like hrhiXts . .Ateicc/iopus, Konow. 



Cep/uis, Latreille. 



Cephus Graenicheri, n. sp. — 9 • Length, ir mm. Black, shining; 

 antennse 20-jointed, very slightly but gradually thickened toward apex ; 

 clypeus, except a median black spot anteriorly, a line beneath the eyes, 

 mandibles except teeth, palpi except the terminal joints, which are 

 dusky, a spot on front of tegulfe, two spots beneath on the upper angles 

 of episternum and mesopleura respectively, spots on the anterior and 

 middle coxae, and the hind coxte, except a black spot within, yellow ; rest 

 of legs, except all the trochanters, tips of the joints of the anterior and 

 middle tarsi with their terminal joint entirely, apex of hind tibiae and 

 their tarsi, which are black or fuscous, reddish-yellow. Wings smoky 

 hyaline, the costa and the stigma yellowish, the latter with a longitudinal 

 dusky streak within ; rest of veins black or blackish. Abdomen longer 

 than the head and thorax united, compressed, black, with bands and 

 blotches ]iolished, shining, impunctured, except some sparse, rather coarse 

 punctures on the first dorsal segment above, and some closer punctures 

 laterally at base of the second segment ; the second segment has an 

 obscure rufous spot on each side at base ; the third has a narrow 



