56 Mr. P. Cameron on new 



segment, Avhicli ends laterally in a stout, somewhat trian- 

 gular tooth ; the keel outside this again is shorter, reaching 

 only to the base of the lateral tooth. Metapleurse in the 

 middle stoutly irregularly reticulated. Legs dark blue, 

 thickly covered with long black hair ; the tarsal joints are 

 long and slender, and not much dilated at their apices. 

 Abdomen shining, with a more distinctly blue tint than the 

 thorax ; the petiole is sparsely, minutely punctured ; the 

 second segment is, if anything, more closely punctured than 

 it at the base, at its apex the punctures are stronger and 

 more numerous ; the apical segments are coarsely rugosely 

 reticulated and punctured. Wings fuscous, with a distinct 

 violaceous tint ; the first transverse cubital uervure is ob- 

 literated entirely. 



Ampulex ruficoxis, sp, n. 



Bluish green, sparsely punctured ; the four posterior 

 femora, trochanters, and cox^e red ; the wings fuscous 

 violaceous, with three transverse cubital ncrvures ; the front 

 uith three longitudinal keels. ? . 



Long. 13 mm. 



Antennae black, slender, bare; the third joint fully one- 

 third longer than the fourth. Head bare; the vertex is 

 sparsely punctured ; on the front a keel reaches from the 

 ocelli to the face and one, two thirds of its length, runs to 

 each antenna. Mandibles black, bare, rufous towards the 

 apex. Prothorax bare, in length about one-third longer 

 than the width at the apex ; there is a distinct longitudinal 

 furrow in the middle. Mesonotum almost impunctate; the 

 mcsopleurce with longitudinal rows of deep punctures. The 

 central keel on the median segment is longer than those on 

 either side of it ; the outer one unites to that bounding the 

 apex ; the strise are moderately stout and close ; the apical 

 slo])e is shagreened and, on the upper part, is obscurely 

 obliquely striated ; the teeth are stout and bluntly rounded 

 at the apex. The ujper part of the metapleuise is closely 

 obliquely striated ; the lower impunctate. Legs dark blue; 

 the four hinder femora, except at the apex, the four hinder 

 trochanters, the hinder coxse, and the greater part of the 

 middle pair vermilion- red. Wings fuscous violaceous, paler 

 at the base ; the three transverse cubital nervurcs are 

 distinct; the first two are oblique, parallel, and straight. 

 Abdomen smooth and shining; blue for the greater part; 

 the narrowed basal half of the petiole is red, like the femora ; 

 the second segment is one-third longer than the width at 

 the apex ; all the segments are impunctate. 



