266 Annals of the Carnegie Museum. 



very narrow at its middle and greatly expanded laterally. Scape of 

 the antennse yellow, bordered on the inner side with a black line; the 

 flagellum below and the entire pedicel rufous ; the rest of the flagellum 

 above dusky brown, this color being more intense on the apical half. 

 The distance between a posterior ocellus and the eye is distinctly less 

 than the width of the ocellus. The left mandible is plainly bidentate; 

 the dentition dark brown. The right mandible is concealed, but with 

 the sides of its dark-brown apex seen in an oblique light at first 

 glance presents the appearance of a third tooth, which may have 

 misled Ashmead, as it at first misled me. until I examined the mandible 

 of the opposite side. The middle lobe of mesonotum has a transverse 

 black stripe, occupying a little more than one-third of the anterior 

 margin, and two longitudinal outwardly curved, blackish lines, con- 

 nected with the lateral ends of the antero-marginal stripe, and con- 

 nected with each other at the posterior third of this lobe; thus the 

 antero-marginal stripe and the two curved lines form together a circle, 

 and from the posterior end of this circle extends apparently a blackish 

 line to the posterior margin of the lobe. The pin has unfortunately 

 been thrust thi-ough the body behind the circular mark, and this ex- 

 tended line can not l^e distinctly defined. Scapula with its anterior 

 margin and a short longitudinal stripe near its inner margin blackish. 

 Axilla with the inner corners black, this color extending narrowly 

 across the anterior margin of the scutellum. Scutellum with a black- 

 ish, reverted T-mark, the stem of which, very narrow and pointed, 

 reaches the anterior border ; its rather short cross-line, pointed at 

 each end, rests on the posterior fifth of the scutellum. The scutellum 

 ends in a small slightly concave plate, the distal margin of which is 

 gently emarginate, and its lateral, semitranslucent corners only slightly 

 produced. The breast between the anterior and middle pairs of legs 

 black, and this color extends dorsad along the anterior margin of 

 episternum; the ventral portion of metathorax between the posterior 

 pair of legs black. The posterior cox?e above with the apical socket 

 black ; the posterior femora each on inner side at base near dorsal 

 margin with a short, longitudinal, blackish-brown stripe; they are 

 armed along the externo-ventral edge with five strong teeth, which 

 have their apical halves black; the distance between the two large 

 basal teeth of both the femora is about twice as great as the distance 

 between the other large teeth ; the right femur has an additional, 



