542 PROCEEDINGS OF THE ACADEMY OF [1893. 



punctured ; colored similar to the 9 , the pubescence denser. 

 Length 9-12 mm. 



Canada to Texas; Colorado; Illinois. 



2. — Astatus Sayi n. sp. 



9. — Produced portion of anterior margin of clypeus strongly tri- 

 dentate; front with tolerably strong, close punctures, the vertex with 

 very sparse, strong punctures; ocelli placed in pits, especially the 

 anterior one; antenna? tolerably long, the first joint of flagellum less 

 than one-third longer than the second; dorsulum with tolerably 

 strong and not very close punctures; scutellum sparsely punctured, 

 very slightly impressed medially; metathorax above coarsely reti- 

 culated, the reticulum closer than in unicolor; the meta- 

 plura? rugose; at the base of posterior face of metathorax, in 

 the middle, is a triangular enclosed space, the lower half of which is 

 smooth; tibise and tarsi strongly spinose; abdomen very sparsely 

 punctured, including the second ventral segment; pygidial area less 

 than twice longer than it is broad at the base. Black; mandibles 

 medially, tegulre and the tarsi obscurely, testaceous; head, thorax 

 and legs tolerably clothed with pale pubescence; with exception of 

 the first segment, the abdomen is nude; wings with the apical third 

 fuscous, the marginal cell obliquely truncate. Length 14 mm. 



Virginia. Resembles closely unicolor, but is easily distinguished 

 by dentate clypeus, larger size, etc. 



3. — Astatus occidentalis Cress. 

 Astata occidentalis Cr., Kohl, Proc. Ent. Sect. Acad. Nat. Sciences, Phila., 



1881, p. III. $ . 

 Astatus occidentalis Kohl, 1. c. p. 448. 



9 . — Produced portion of anterior margin of clypeus sinuous, 

 slightly lobate medially; front with tolerably strong and close 

 punctures, which are, however, not so close as in the preceding species ; 

 vertex with sparse, strong punctures; ocelli placed in pits, especially 

 the anterior one ; first joint of flagellum about one-quarter longer 

 than the second ; dorsulum anteriorly closely punctured, the re- 

 mainder polished, almost impunctate; scutellum sculptured above 

 like the posterior part of dorsulum, with an impressed line on apical 

 half; metathorax above coarsely reticulated and with a triangular 

 depression at the apex in the middle ; metapleurre coarsely striated; 

 posterior face of metathorax with a pyriform depression, situated be- 



