150 Trans. Acad. Set. of St. Louis. 



truncate or sinuate at tip. The type may be recognized by 

 the following characters: — 



Form moderately stout, elongate, parallel, polished, black in color, the 

 antennae paler toward base, the abdomen not paler at tip, the eoLire 

 elytra and legs bright rufo-testaceous; head wider than long, fully 

 four-fifths a3 wide as the prothorax, distinctly and rather sparsely 

 punctate, the eyes well developed; antennae as long as the head and 

 prothorax, gradually and rather strougly incras^ate to the tip, the 

 eleventh joint elongate, pointed and triangaUr, the tenth fully one-half 

 wider than long, the second slightly shorter than the third; prothorax 

 two-thirds wider than long, the sides parallel, bi^coming arcuate and 

 converging anteriorly and posteriorly, the apex but little narrower than 

 the base, which is broadly and strongly arcunte, the basal angles very 

 obtuse but less rounded than in Aleochara, the punctures fine but 

 strong, annular, not very close-set but evenly distributed, the two an- 

 terior discal punctures distinct; elytra one-half wider than long, slightly 

 longer and wider than the prothorax, the suture somewhat shorter than 

 the median line of the latter, the punctures rather coarse, even, rounded, 

 scarcely asperate and separated by more than their own diameters; 

 abdomen subparallel, scarcely at all narrowed from base to apex, rather 

 finely, very sparsely punctate throughout, the depressions of the basal 

 segments witd still smaller, sinaple and sparse punctures; basal joint 

 of the hind tarsi as long as the next two combined. Length 4.4 mm.; 

 width 1.05 mm. California (Lake Co.),— C&arlesFuchs. 



rubripennis n. sp. 



The pubescence is rather long and fulvous but sparse, and, 

 unlike that of the preceding genera, is erect and bristling on 

 the head and pronotum but more decumbent on the elytra ; 

 it is very sparse and inconspicuous on the abdomen, though 

 the usual apical porrect fringe of each segment is v^ell devel- 

 oped. I have seen only one specimen which is of unde- 

 termined sex. 



Baryodma Thorns. 



There is considerable latitude of variation among the con- 

 ponents of this large and universally distributed genus, par- 

 ticularly in the extent of the mesosternal carina, sculpture, 

 especially of the pronotum, and relative length of the tarsi 

 and tarsal joints. It would appear at first sight as though 

 such divergencies as observable in the pronotal sculpture of 

 imbricata, sculptiventris and many others, where the punc- 

 tures are fine, close-set and even throughout and of bimacnlata. 



