AMERICAN DIPTERA. 235 



a golden pruinose line. The black on the proximal margins of the 

 abdominal segments broadens out into a distinct triangle with its apex 

 to the rear; last two segments wholly polished black. Pile of entire 

 body fine and golden. Legs bright yellow; apical third of the front 

 and middle femora and the apical fourth of the posterior femora black . 

 Wings hyaline. 



Habitat.— -N. Y. (type locality); Westville, N. J. (Aug. 21, 

 1892, C. W. Johnson); Castle Rock, Del. Co., Pa. (Sept, 7, 

 1901, E. Daecke) ; and Lehighgap, Lehigh Co., Pa. (July 11, 

 C. T. Greene). 



This is an extremely rare species, and, until Prof. Johnson 

 made his capture in 1892 at Westville, N. J., was spoken of 

 as the " long lost aurulentus." I know of but three specimens 

 in this country, one each in the three collections of Prof. C. W. 

 Johnson of Brookline, Mass., Mr. E. Daecke of Philadelphia, 

 and the American Entomological Society, Philadelphia. It is 

 readily distinguished from cruciatus Say by its much smaller 

 size, the almost omnipresent golden bloom, the black triangular 

 spots of the abdominal segments, the yellow legs, the hyaline 

 wings and the shape of the last antennal segment. 



Ceraturgus cruciatus (PL IV, fig. 2; PI. VII, fig. 1.) 



Dasypogon cruciatus Say, Jour. Acad, Sci. Phila., Ill, 52, 1823; 

 Compl. Works, II, 66. 



Dasypogon cruciatus Wiedemann, Auss. Zw., I, 381, 1828. 



Ceraturgus fasciatus Walker, List, II, 367, 1849. 



Dasypogon cruciatus Loew, Besch, Eur. Dipt., Ill, 124, 1873. 



Ceraturgus cruciatus Brauer, Wien, Ent. Zeit., II, 56, 1883. 



Ceraturgus cruciatus Johnson, Psyche, X, 112; 1903 (fig. of 

 antenna) . 



Dasypogon cornutus Wiedemann, see Ceraturgopsis. 

 rf 9. — Length 16-20 mm. — Black, the polished thorax margined 

 and spotted with yellow; abdomen annulate with yellow; wings dusky. 

 Pleurae not wholly grayish or golden pruinose. 



Face brassy-yellow, mystax of same color; ocelli reddish; occiput 

 densely golden pruinose with weak golden bristles. Antenna; black; 

 first segment broadly reddish below; terminal segment elongate and 

 densely black pubescent; when denuded a slight but distinct pro- 

 jection is found on the outer side about one-third the distance from 

 its base. Thorax black, dorsum often with a reddish tinge; the median 

 and lateral stripes very indistinct, scarcely noticeable; humeri, lateral 

 margins, two spots above the humeri and more or less connected with 

 them, and two small spots farther back on the middle of the dorsum 



TRANS. AM. ENT. SOC, XXXV. JUNE, 1909. 



