548 PROCEEDINGS OF THE ACADEMY OF [1893. 



11. — Astatus bellus Cress. 



As/a/a bella Ci\, ibid, p. VI. $ . 

 Aslatits bellus Kohl., 1. c. p. 447. 



$ % — Median lobe of clypeus obtuse, or truncate at tip; front 

 rugose; first joint of flagellum about one-quarter longer than the 

 second; dorsulum finely and closely punctured, particularly an- 

 teriorly ; scutellum slightly impressed ; metathorax above very finely 

 and transversely striated, the metapleurse coarsely so, the posterior 

 face deeply punctured. Black ; abdomen, tibia? and tarsi, red ; 

 femora testaceous ; two transverse, small spots before ocelli, man- 

 dibles medially, teguhe, base of wings, spot before tegulse and 

 another at base of fore tibiae, white ; head and thorax with pale 

 pubescence ; wings hyaline, with a pale fuscous spot, which includes 

 the marginal, second and third submarginal cells ; marginal cell 

 truncate. Length 7 mm. 



San Diego, California. 



2. — Astatus caeruleus Cress. 

 Astata caerulea Cr., ibid, p. IV. $ . 

 Astatus caeruleus Kohl.. 1. c. p. 447. 



$ . — Median lobe of clypeus produced into a short tooth or spur ; 

 front closely punctured throughout ; first joint of flagellum not one- 

 quarter longer than the second ; dorsulum closely punctured an- 

 teriorly, posteriorly the punctures become sparse and stronger ; 

 scutellum impressed ; metathorax above rather coarsely granulated, 

 the meso-and metapleura? rugose. Entirely ceruleous ; antenna? 

 and greater part of legs black ; head and thorax with sparse, black 

 pubescence ; teguhe testaceous ; wings dark fuscous ; marginal cell 

 truncate ; abdomen ventrally strongly punctured. Length 8 mm. 



Nevada. 



DIENOPLUS gen. nov. 



Similar in form to Astatus; head about as broad as the thorax; 

 inner eye-margins almost parallel in both sexes; eyes beneath reach- 

 ing to the base of the mandibles, which are not emarginate on outer 

 margin; clypeus large, especially in the $ , and transverse ; the lab- 

 rum is large and prominent, but not projecting; antenna? situated 

 close to the clypeus, and are separated from each other by a distance 

 much less than that between them and the nearest eye-margin, in the 

 9 short and thick, in the $ sleuder and half again as long; ocelli 

 all distinct and prominent, forming a curve; prothorax above not 



