March, 1917.] Cole: Osten Sacken's Group " Pcecilanthrax." 69 



near the posterior margins of the segments. This group is known 

 only from America. The habits and early stages of species are 

 not known. The life history is no doubt similar to that of other 

 species of Anthrax. 



Anthrax calif ornicus new species (fig. 2). 



This species resembles A. alpha. The general color is grayish black, with 

 a blue tinge on the thorax. There is a round red spot on the lateral margin of 

 l)oth the second and third segments. All the segments except the first have 

 black pile on the posterior border. With the exception of the posterior border 

 the segments are covered with whitish pile and tomentum. The pile on the 

 sides of the abdomen is quite long and bushy (see fig. 3). Scutellum reddish 

 brown, the base black. Occiput black, with sparse white tomentum. Short 

 black pile on frons, which continues below base of antennae. First joint of 

 antennae reddish, the second and third black (see fig. 14). Base of front 

 femora blackish, also the tarsi and tips and inner sides of tibiae. The 'first 

 three segments of the venter reddish, the rest black. Pile of thorax pale yel- 

 low, the spines yellow. Pleurae black, the pile whitish. Wing markings very 

 much as in alpha, the light spaces smoky hyalinfe. No supernumerary cross 

 vein. Very short stump of a vein in third posterior cell, arising near second 

 posterior cell. 



Type. — U. S. N. M., Cat. No. 20737 — Four specimens. 



Habitat. — East Highlands, Cal., Sept. 21, 1914. 



A specimen from Reno, Nev., Sept. 2, 1916 (H. G. Dyar), has 

 more white tomentum on the dorsum of the abdomen. There is less 

 white pile on the abdomen and no red spots on the second and third 

 segments. The legs are all blackish, except the knees, the femora 

 and tibiae with white tomentum. One specimen from Las Cruces, N. 

 M., Sept. 27 (Townsend). 



Anthrax halcyon Say (fig. 2). 



Anthrax alcyon Say, Complete Works, Vol. i, p. 252. 



" Wings brown, a hyaline spot near the middle, another at the tip 

 in which are two curved brown lines. 



" Inhabits Northwest Territory. 



"Body black, with pale fulvous hair; head yellowish-white, hairs 

 above the antennae black; tip of the hypostoma prominent, and with 

 rigid black hairs; antennae black, basal joint yellowish with black 

 hairs; vertex black; occiput with a very profoundly impressed line 

 above ; scutel piceous ; wings dusky, pale brown on the disk, an ob- 

 solete, small, subhyaline spot between the middle and the base ; a 

 large, subtriangular, hyaline spot near the middle, a small portion of 



