March, 1917-] CoLE : OSTEN SaCKEN's GrOUP " PcECILANTHRAX." 77 



Anthrax flaviceps Loew. 



Anthrax flaviceps Loew., Cent. VIII, 132. 



I give below a rather free translation of Loew's description in his Cen- 

 turies : " Black, opaque. Head .yellow, vertex and occiput black, frons and 

 face with black pile and yellow tomentum, the oral margin in front furnished 

 with short black pile ; the proboscis not prominent ; first antennal joint yellow 

 or brownish, closely black pilose; second joint black, with short black pile; 

 third joint not present in this specimen. Thorax with fulvous pile. Scutellum 

 except base red. Abdomen wholly black, lateral margins with fulvous pile, the 

 pile however is black on the posterior angles of the segments. Dorsum of 

 abdomen wholly yellow tomentose the sides are furnished with yellow pile 

 and the hind margins of the segments, with black pile. Venter black, the 

 posterior margins pale and the sparse pile yellow. Legs testaceous, the base 

 of front femora, the tibiae except base, the rest of the tibiae to the apex of the 

 tarsi all black. Wings fuscous cinereous, venation similar to A. halcyon Say, 

 appendiculate vein from discal cell in third posterior is missing ; this cell being 

 in one, not divided in two parts as in A. halcyon Say. Adventitious veins 

 sometimes occur; sometimes arising from the intercalary vein. 



" From Tamatilipas, Mex. Type in Museum of Comparative 

 Zoology." Mr. Banks notes in comparing specimens that pilosa is 

 very near flaviceps, but the latter is even more obscurely marked." 



Anthrax demorgon Walker. 



Anthrax- demorgon Walker, List, 2, 265. 



" Body black ; head clothed with black hairs ; ferruginous between the 

 eyes, tawny in front ; mouth tawny ; feelers and sucker black : eyes dark red : 

 chest and breast, and especially the latter clothed with red hairs ; scutcheon 

 ferruginous, excepting the fore border : abdomen dull black, piceous beneath, 

 clothed with red hairs, and having a fringe of black hairs on each side: legs 

 dark ferruginous, beset with black bristles, feet piceous : wings blackish brown, 

 having near the fore border in the middle of the length a large ferruginous 

 spot, which also stretches along the borders of the veins ; beneath this there 

 are three colorless spots, which occupy as many areolets, the first nearest to 

 the hind border is small, the second is larger, the third is triangular and 

 larger ; beyond the latter and nearer to the hind border there are two very 

 small, and sometimes almost obsolete colorless spots ; the tips of the wings 

 are pale gray, excepting two stripes which follow the curves of the veins and 

 are joined together at each end ; wingribs and veins piceous ; poisers tawny, 

 their knobs piceous above. Length of body 6 lines; of wings 16 lines. 



" Florida. 



" The fork on the base of the fourth areolet on the hind border, 

 reckoning from the base of the wing, is longer than that of A. hal- 

 cyon/' 



