278 HYMENOPTEEA. 



strongly punctured, densely covered with fulvous pubescence ; the middle keeled, the 

 keel ending at the apex in a tooth, flattened laterally, the apex (viewed laterally) being 

 rounded. The first ventral segment black, laterally punctured ; the keel straight ; the 

 apex triangular, projecting ; the base triangular. The second ventral segment rather 

 strongly punctured all over ; the other segments finely punctured at the apex. The 

 hypopygium with the basal half raised above the apical half; at the sides are two 

 stout oblique keels, ending almost in teeth. The ventral segments are fringed with 

 rufous hairs. The legs densely covered with white hair. The radial cellule, is not 

 very wide, and reaches beyond the third cubital cellule ; the first and apical abscissae 

 of the radius curved, the former shorter than the latter ; the second cubital cellule at 

 the base is sharply lanceolate, the third wider at the bottom than at the top ; the 

 second transverse cubital nervure is curved towards the apex, the third sharply angled 

 above the middle ; the first and second recurrent nervures are both received shortly 

 beyond the middle ; the transverse median nervure is received a little before the basal 

 nervure. 



x 22. Mutilla exacta. (Tab. XIII. fig. 20, <y organ.) 



Long. 15 millim. <$ . 



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



Agrees exactly in coloration with M. amulce, but easily known from it by being 

 5 millim. less in length ; also by the four teeth on the cheeks ; the more strongly 

 gibbous scutellum ; the pygidium at the apex having two short stout keels forming a 

 triangular area, the part enclosed being depressed ; the second segment only finely 

 punctured at the sides ; the radial cellule broader, and the second cubital cellule at the 

 base not so sharply lanceolate ; the first transverse cubital nervure not straight, but 

 curved ; and the second recurrent nervure received nearer the apex of the wing. 



Head narrower than the thorax ; the top shining, strongly punctured, sparsely 

 covered with rather short pale hair, the rest of the head densely covered with longer 

 white hair, that on the oral region being especially long ; below the antennae the head 

 retreats inwardly with a steep slope, which is shining and glabrous ; at the sides are 

 two stout, rather long testaceous teeth, behind which is a thick patch of yellow hair, 

 touching the eyes ; the apex of the clypeus rounded. The eyes are large, the incision 

 wide ; the head retreats sharply behind them. The scape of the antennae shining, 

 very sparsely haired ; the flagellum with a scattered pile ; the third joint distinctly 

 longer than the fourth. Prothorax coarsely punctured ; the base with short pale hair, 

 the apex with a dense band of white pubescence. Mesonotum very strongly punc- 

 tured, the punctures distinctly separated, deep, roundish or elongate ; thickly covered 

 with short dull rufous hair. The tegulae large, projecting behind ; the base shining, 

 impunctate, the apex thickly covered with pale fulvous hair. The scutellum strongly 



