NORTH AMERICAN DIGGER WASPS— FERN ALD. 413 



Head and thorax with rich pubescent spots; these are yellowish-white, nickel col- 

 ored. This pubescence is present on the collar, as lateral bands on the dorsulum, 

 upon the prothoracic lobes, as spots immediately behind this and on the mesopleu- 

 ron above the middle coxa, as a streak following the stigmatal groove on the meta- 

 pleuron, on the postciitellum, and upon the hinder end of the median segment. In 

 Saussure's specimen of brasllianus the entire end of the median segment is not pubes- 

 cent, but ornamented by two stripes which are separated by a bare spot. Longer 

 liairs dirty white. 



Inner margins of the eyes parallel. Least distance apart of the eyes upon the clyp- 

 eus less than double the length of the petiole, which is scarcely shorter than the 

 second and longer than the third hind tarsal segment. Least distance apart of the 

 eyes upon the vertex slightly greater than the length of the first segment of the fila- 

 ment. Dorsum of the median^egment finely leather-like; somewhat shorter than in 

 lexanus, and therefore appears more compact. 



Metatarsus of the fore legs with eight comb teeth on the outer border. Inner con- 

 tour of the hind tibiaj straight. ( Kohl, 1890. ) 



Male. — Black. Legs for the greater part pitchy red; in the specimen before me 

 the coxte, the trochanters and the femora on their posterior side except on the tip 

 are pitchy red. The long abundant hairs of the head, thorax, and median segment 

 are dirty yellow; the collar above, the prothoracic lobes, and a spot behind them, a 

 spot above the middle coxae and another above the hind ooxpe, the dorsulum on the 

 inner border of the bases of the wings (lateral bands), the postscutellum and the 

 median segment on both sides behind near the petiole are coppery yellow pubescent. 

 Wings quite clear, with a weak yellow reflection. 



Mandible two-toothed. The labrum shows only a hint of a median longitudinal 

 ridge. The inner margins of the eyes converge toward the clypeus. The least dis- 

 tance apart of tlie eyes at the clypeus about equals the length of the first plus half 

 that of the second filament segment; and upon the vertex equals that of the pedicel 

 plus the first filament segment. The lateral ocelli are almost as far apart as they are 

 from the eyes. The first filament segment is about as long as the second plus one- 

 third of the third. 



Scutellum with a longituilinal impress in the middle. Dorsum of the median seg- 

 ment finely leathery. Petiole somewhat longer than the -second hind tarsal segment, 

 and therefore long, as compared with many otlier species. The ventral anal plate is 

 slightly ploughshare shaped and pointed, more than in umhro^us Chr. Tlie upper 

 anal plate with a strong curve. Structure of the genital apparatus illustrated a? 

 figure 34 of plate V; it most closely resembles that of Sph. incomptus Gerst. (Kohl, 

 1895.) 



Some writers seem to regard tmctipenni^ Cameron as a variety or 

 subspecies of bj'asUiaman rather than as the same. As I ha\e not 

 iseen either 1 do not feel competent to e.xpress any opinion on the point. 

 C. hrasllianutii as such has not been reported from an}^ localities 

 within the limits of this paper, but tinctipennu has l)een taken in 

 Costa Rica and Guatamala (El Tumbador, 2,500 feet). Kohl does not 

 recognize . any variety of hras/Harnim and places f/'ncf//>enn/s in the 

 synonomy; accordingl}^ the description above should be satisfactory 

 for the latter. 



Proc. N. M. vol. xxxi— 06 -27 



