152 Trans. Acad. Sci. of St. Louis. 



sate to the tip, the tenth joint about one-half wider than long, the second 

 and third elongate, the former slightly the shorter; prothorax small, 

 nearly two-thirds wider than long, only moderately narrowed from base 

 to apex, rather strongly, evenly rounded at the sides, the base broadly 

 arcuate, the punctures flue and inconspicuous, not very close ; elytra 

 large, scarcely one -half wider than long, distinctly wider and longer 

 than the prothorax, the suture about equal in length to the latter, the 

 punctures fine, close-set and asperulate; vestiture of the anterior parts 

 rather sparse, fine, fulvous and subdecurabent; abdomen at base not 

 quite as wide as the prothorax, only feebly narrowed thence to tip, 

 rather finely, sparsely punctured, the punctures becoming very fine and 

 sparse apically, the basal impressions with extremely minute, sparse 

 and nude punctules; basal joint of the hind tarsi scarcely as long as 

 the next two combined. Length 3.5-3.8 mm.; width 1.0-1.1 ram. 

 British Columbia (Glenora) to Middle California (Lake Co.). {=Aleo- 



chara cast. Esch. ] castaneipennis Esch. 



Head and prothorax reiaiively larger, the latter as wide as the base of the 

 elytra. Body evidently stouter, similar in coloration and vestiture, ex- 

 cept that the elytra are only just visibly paler and piceous; head wider 

 than long, sparsely punctulate, three- fifths as wide as the prothorax; 

 antennae attaining the middle of the elytra, the tenth joint scarcely a 

 third wider than long; prothorax proportioned nearly as in the preced- 

 ing, but rather more narrowed from base to apex, the sides slightly less 

 arcuate, the punctuation fine and not dense; elytra still larger, much 

 longer, and, near the middle, distinctly wider than the prothorax, the 

 suture fully as long as the latter, the punctures rather fine but more 

 distinct, close-set and asperate; abdomen at base as wide as the elytra, 

 somewhat distinctly narrowed thence to the tip; sparsely punctured 

 and polished nearly as in castaneipennis ; basal joint of the hind tarsi as 

 long as the next two combined. Length 3.4 mm. ; width 1.2 mm. Cali- 

 fornia (Pomona), — H. C. Fall robnstnla n. sp. 



4 — Abdomen rather finely punctate and polished, the punctures notably 



sparse. Pacific Coast and Rocky Mountains 5 



Abdominal puuctures much more close -set but not dense. Atlantic 

 regions 9 



5 — Mesosternal carina much abbreviated, not attaining the tip of the process 



by more than twice the width of the process at the posterior end of the 

 carina. Body moderately stout, polished, piceous, the abdomen black- 

 ish, the elytra and legs pale rufous, the antennae fuscous, pale toward 

 base; vestiture rather sparse and inconspicuous; head small, as long as 

 wide, one-half as wide as the prothorax, the eyes well developed 

 but at an unusual distance from the base; antennae as long as 

 the head and prothorax, gradually, rather strongly incrassate 

 to tip, the tenth joint scarcely twice as wide as long, the second 

 and third elongate and subequal; prothorax of the usual transverse 

 form and flae, rather sparse punctuation, but unusually narrowed from 

 base to apex, the sides and base rounded; before the middle of the base 

 there are two feeble approximate impressions, homologous with the 

 discal lines of bimaculata and allies; elytra scarcely one-half wider than 

 long, subequal in length and width to the prothorax, the suture four- 



