234 THE CANADIAN ENTOMOLOGIST. 



1. ASTATUS UNICOLOR, Say. 



Astata ujiicolor, Say. Exped. St. Peter's River II., p. 337, 

 ?; Smith, Catal. Brit. Mus. Hym. IV., p. 310, pi. VIII., 

 fig. I., 1856, $. 

 Canada to Texas. 



2. ASTATUS OCCIDENTALIS, CreSS. 



Astata occidentalis, Cr. Proc. Ent. Sect. A. N. S. Phila., 1881, 

 p. III., $ ?. 



Resembling closely nigropilostis, but is at once distin- 

 guished by the white pubesence, and by the marginal cell 

 being fully as long as the first submarginal ; the depression 

 on metanotum, apically, is much stronger. Length, 12-14 

 mm. 

 Nevada, Montana, Washington. 



3. AsTATUS NUBECULUs, Cress. 



Astata mibeciila, Cr. Proc. Ent. Soc. Phila., p. 466, $. 



Astata nigropilosa, Cr. Proc. Ent. Sect. A. N. S. Phila., p. 

 IV., 1881, $ %. 

 Col, Nev., Cala., Mont., Washington. 



4. AsTATUS BicoLOR, Say. 



Astata bicolor, Say. West. Quart. Reporter II., No. r., 1823 ; 

 Lee. Ed. I., p. 166. ? $. 



Astata rufiventris. Cress. Trans. Amer. Ent. Soc. IV., p. 21 8. 9 



Astata terminata. Cress, ibid. ^ . 



Canada and the entire United States. A. terminata, 

 Cress., is a slight variety, having the metanotum a little 

 more strongly roughened. 



5. ASTATUS PYGIDIALIS, H. Sp. 9 • 



Front strongly and rather closely punctured, sparsely so along 

 the inner orbits ; vertex very sparsely punctured ; the distance 

 between the hind ocelli is almost twice greater than that between 

 these ocelli and the inner eye-margins ; antennae rather stout, first 



