270 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



the dorsum of the median segment from the last to the postscutellum, golden to 

 yellow sericeous or pubescent. In the specimen at hand the prothoracic lobe, the 

 mesopleural triangular area, and the two spots on the end of the median segment are 

 densely pubescent ; the others are coarsely sericeous only ; but as this specimen 

 shows traces of having been wet, some of the sericeous areas were probably once 

 pubescent. Anterior face of the collar rising perpendicularly from the neck, slightly 

 rounded from side to side ; its dorsal edge rather broad and rounded in both direc- 

 tions; the surface of the collar black sericeous where not yellow. Sides of the 

 collar slightly glistening, with a broad groove running obliquely downward and 

 backward, on the posterior side of which, in front of the prothoracic lobe, are a few 

 striations. Lateral suture of the neck and collar slightly fringed with short yellow 

 hairs. Mesonotum rising considerably above the collar, with a median groove 

 extending back about half the length of the plate. Lateral margins of the mesono- 

 tum strongly reflexed to its posterior corners, where this reflexed edge is continued 

 inward by the lateral anterior margin of the scutellum a short distance. It then 

 turns backward, and soon unites with the central part of the scutellum, which is 

 rounded downward anteriorly. Scutellum with a slight median depression posteri- 

 orly, on each side of which are a few coarse longitudinal striations. Postscutellum 

 without a median depression, but with coarse striations, as on the scutellum. Dorsum 

 of the median segment with its surface back to the stigmata sericeous or pubescent, 

 which behind this grows narrower till it reaches the posterior end, the sides of the 

 dorsum, which is much broader behind the stigmata, lateral to the sericeous cover- 

 ing, being coarsely striate, the striations being nearly but not quite transverse. 

 Posterior end of the median segment sericeous where not pubescent. Sides of the 

 median segment coarsely rugose, the ridges running nearly vertical posteriorly, 

 and obliquely downward farther forward. Numerous short yellow hairs are present 

 on this surface. Mesopleuron with numerous punctures, coarser below, with yellow 

 hairs. Below the triangular pubescent spot are short, rather irregular ridges 

 running nearly vertical and soon becoming obsolete, below which the surface is 

 sparsely punctured and bears yellow hairs. Metapleuron with striae or rugosities 

 running obliquely forward and downward on the upper part of the plate, vertically 

 downward on the lower part. Near the upper, outer angle of the metacoxa is 

 a pronounced, flattened tubercle. 



Abdomen. Petiole of two segments, the first cylindrical, black, somewhat gray- 

 ish sericeous, the second elongate conical, black near its base above and below, the 

 remainder red, five-sixths as long as the first segment. Remainder of the abdomen 

 entirely red except a band of blackish on the fourth dorsal plate which covers all 

 but the posterior margin and a very small place ou the median line anteriorly, and 

 is lighter along the median line. Posterior margin of the seventh dorsal plate oval 

 in outline. Surface of the abdomen grayish sericeous above, somewhat glisten- 

 ing beneath, and here with scattered punctures most abundant on the posterior 

 part of each plate, and more abundant on the seventh. Posterior margins of 

 the third to sixth ventral plates inclusive, rounded, with a central emargination 

 which becomes more of a notch behind. Seventh ventral plate conical, its sides 

 rolled in at the tip so that with the end of the dorsal plate a nearly circular open- 

 ing is formed ; its surface bearing numerous whitish hairs, chiefly at the sides near 

 the end. 



Wings, hyaline, the fore wings with a yellowish tinge from the base to the 



