268 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



ferruginous tinge; with a row of aciculations on the outer edge and bearing an 

 irregular fringe of quite long black hairs. Terminal tooth of each mandible extending 

 gome distance beyond the base of the other. 



Thorax. Neck short. Anterior face of collar very flat, rising at right angles to 

 the neck, its surface sparsely pale yellow pubescent. Dorsal edge of collar very 

 narrow, evenly rounded, closely appressed against the mesonotum. Sides of the 

 collar glistening in front of the prothoracic lobe, and excavated, forming quite a 

 sharp vertical ridge anteriorly. Prothoracic lobe with a few scattered punctures 

 and brown hairs, and with a trace of golden pubescence behind. Prosternum 

 sparsely punctured, bearing quite long brown hairs. Mesonotum rising somewhat 

 sharply at first above the collar, with a faint, short, anterior median depression ; 

 its surface evenly but not closely covered with punctures of medium size, pale 

 sericeous at certain angles, and bearing a few short brown hairs ; its lateral 

 margin somewhat reflexed from in front of the tegulae to the posterior corners. 

 Scutellum rather broad from front to rear, and quite flat, its surface somewhat 

 glistening, and punctured about like the mesonotum, with a slight median depres- 

 sion behind. Postscutellum narrow, strongly bituberculate, minutely punctured. 

 Dorsum of the median segment closely, transversely striate, the striations being 

 coarser at the sides behind the stigma, but not extending beyond the limits of the 

 dorsum ; its surface quite thickly covered with rather short, erect, brown hairs. 

 Fovea broadly crescentic. Posterior end of the median segment forming nearly a 

 right angle with the dorsum ; its surface granular, and bearing quite a thick 

 clothing of long brown hairs. Toward the sides there are faint traces of striations 

 above, but the surface for some little distance behind the stigmatal groove is 

 smooth except for minute punctures, and somewhat glistening. Stigmatal groove 

 running forward some distance from the hind coxae, then turning sharply upward 

 to the stigma close behind a pronounced, narrow, vertical ridge, which extends 

 down from the front of the stigma to a point a little below the bend of the stig- 

 matal groove. Meso- and meta-pleura rather closely and minutely punctured, quite 

 thickly covered with short brown hairs. Petiole black, with a faint reddish tinge, 

 short, straight, a little shorter than the second hind tarsal segment, or the first 

 filament segment, one-third longer than the second filament segment ; its surface 

 minutely punctured, and bearing short brown hairs. 



Abdomen quite long in proportion to its width, rather pointed behind, black 

 with a dull reddish tinge, particularly on the sides and beneath, whitish or grayish 

 sericeous, particularly on the second and third dorsal plates. Stigmata reddish. 

 Dorsal plates with minute scattered punctures, except the last two, which are 

 quite coarsely punctured and bear a few reddish brown hairs. Beneath, with a 

 number of quite long brown or reddish brown hairs on the last plate. 



Wings hyaline, except on the outer margin of the fore wing from the end of the 

 radial cell back to the end of the subdiscoidal vein, and at the base, all of the costal 

 cell and the greater portion of the median, submedian, and anal cells, which are 

 deep brown. The base of the hind wing is similarly colored. Cubital vein obso- 

 lete beyond the third cubital cell in the fore wing. That of the hind wing present 

 for a short distance beyond the transverse cubital vein. Radial vein of the hind 

 wing arched strongly forward beyond the transverse cubital. Transverse median 

 vein nearly straight, joining the median at more than a right angle. Tegulae 

 black, with a reddish tinge behind, with a trace of sericeous at some angles. 



