[87] 



NORTH AMERICAN COLEOPTERA. 243 



tennas toward base, palpi, pronotal and elytral hypomera and anterior legs 

 pale testaceous; middle and posterior legs infuscate throughout; remainder 

 of the under surface blackish; head and pronotum very feebly alutaceous, 

 remainder shining; head glabrous, pronotum and elytra finely and densely 

 pubescent. Head very slightly longer than wide, broadly and feebly im- 

 pressed between the antennas, finely, very feebly and obliquely bistriate 

 between the eyes; surface finely and rather feebly reticulate, impunctate; 

 ocelli small, round, distinct; antennas long and slender, more than one-half 

 as long as the body; joints oue and three subequal in length, distinctly longer 

 than the succeeding ones; joints two and four to seven nearly equal in 

 length, tenth fully one-third longer than wide, cyliudro-obconical. Prothorax 

 anteriorly slightly narrower than the head, widest near the middle, where 

 the sides are nearly evenly and moderately arcuate, slightly straighter to- 

 ward the apex and base and very slightly more strongly convergent in the 

 former direction; apex slightly narrower than the base, broadly and very 

 feebly incurvate; the latter broadly aud very feebly arcuate; apical and basal 

 angles moderately broadly rounded, the former the more strongly; disk 

 nearly one-half wider than long, moderately and evenly convex, not at all 

 impressed, abruptly and narrowly explanate at the sides anteriorly, more 

 broadly and gradually so toward the basal angles, where it is also slightly 

 reflexed, extremely fiuely, evenly, feebly, subasperately aud rather densely 

 punctate, finely and distinctly reticulate. Elytra at base scarcely as wide as 

 the pronotum; sides very feebly divergent and arcuate; apical angles mode- 

 rately broadly rounded; disk depressed, quadrate, nearly three-fourths longer 

 than the pronotum, very densely, rather finely, deeply and evenly punctate. 

 Abdomen produced slightly at the apex, the last segment being rather long 

 and slender; as wide at base as the elytra, polished, feebly aud fiuely punc- 

 tate near the sides, impunctate in the middle. Legs slender. Length 

 2.7 mm. 



California; (Lake Co. 2). Mr. Fuchs. 



Readily distinguishable from the preceding by its much 

 smaller size, more transverse prothorax, finer and much 

 denser elytral punctuation and coloration. Its approxima- 

 tion in appearance to Amphichroum veterator has been before 

 alluded to, and is most remarkable; it is a smaller and 

 slightly more slender species than the latter, but in prono- 

 tal and elytral form and punctuation it is almost precisely 

 similar. 



LATHRIM^UM Erichs. 



L. humerale »• sp.— Rather robust, moderately convex; head blackish, 

 epistoma dark rufous; pronotum dark rufous, obscurely piceous in the 

 middle; elytra pale luteous, dark rufous at the apices, immediately before 



