LTJTNES — ASEIRBA. 127 



and mesopleura almost glabrous; the pronotum bears a few long, stiff, bristle-like 

 hairs; the pubescence on the mesonotum in front is fuscous. Head and thorax 

 alutaceous, opaque. The mesopleura shining, finely punctured, and variegated with 

 blue and green metallic tints. In front of the scutellum is a deep transverse furrow ; 

 from this runs, along the outer side of the mesonotum, a curved carina to the prothorax, 

 becoming united with the suture, which separates the latter from the mesonotum. 

 Outside this is another carina which issues from the tegulse, and which joins the 

 prothorax on the side at the middle ; and from the transverse furrow run two carinas 

 along the middle, which become obsolete before reaching the pronotum. The centre 

 of the mesonotum is hollow, but not very deeply ; in the centre of the hollow is an 

 almost obsolete carina. 



4. Lutnes longiventris. 



Niger ; coxarum posterioribus apice, trochanteribus posterioribus et basi tibiarum postiearum albis. 

 Long. 5 millim. 



Hab. Panama, Bugaba 800 to 1500 feet (Champion). 



Scape of antennas broad, compressed to a sharp edge on lower side ; flagellum stout, 

 swelling gradually towards the apex; the apices of the third and the fourth joints 

 obscure, white on the outside. Mesonotum flat, considerably depressed in the centre, 

 the depressed part with an obscure blunt ridge in the middle. Head and thorax 

 opaque, alutaceous, covered with a short pubescence. Abdomen smooth, shining at 

 the base, the apex pilose and less shining ; sheath of terebra nearly half the length 

 of the abdomen. Spurs testaceous, the long one on the middle tibia? scarcely two 

 thirds of the length of the basal joint of the tarsus; apices of the four posterior 

 tarsi testaceous. Wings smoky ; the base and apices, and a curved narrow fascia in 

 the middle, hyaline. 



Comes nearest to L. crassicomis, but smaller ; the centre of the mesonotum much 

 more hollowed, the sheath of the ovipositor shorter and testaceous, the wings are lighter 

 in tint, and the scape is much thicker and more compressed laterally. 



ASEIRBA. 



Antennae inserted in the middle of the face, 10-jointed, of nearly uniform thickness. 

 Head broad, concave behind, convex in front. Eyes large, the head not projecting 

 behind them ; ocelli in a triangle. Front projecting a little between the antennas : 

 there are no antennal grooves, nor are there sutures on the vertex. Prothorax small. 

 Mesothorax large. Mesonotum without sutures ; on the side, a little below, a carina 

 runs straight from the pronotum nearly to the tegulse, where it curves up and runs 

 straight across the mesonotum to join a similar carina on other side. There is 

 another carina behind it and in front of the scutellum," which is ovoid, broad at the 



