Coleopterological Notices, VI. 769 



ing through the close yellowish vestiture, having a long row of asperities at 

 each side a little above the eyes, the latter moderate, about equal in length to 

 the tenipora; antennre slender, scarcely at all incrassate and but little longer 

 than the head and prothorax. Prothorax transversely oval, oblique and sinu- 

 ate near the base, the tomentose line moderately wide at the sides; disk finely 

 but strongly, rather closely punctate, the vestiture long, coarse and abundant ; 

 horn well developed, broad, parallel, rounded at apex, not noticeably nar- 

 rowed at base and strongly crenate, the teeth very coarse toward tip; crest 

 strongly elevated, defined by a strongly elevated and somewhat uneven mar- 

 ginal line. Elytra three-fourths longer than wide, two-thirds wider than the 

 prothorax, the sides parallel and nearly straight to apical two-fifths, then 

 gradually oblique and broadly rounded to the inwardly oblique apical trunca- 

 ture; humeral impression subobsolete; disk finely, densely punctate but 

 somewhat shining, the vestiture dense, moderately long, not very coarse, the 

 erect setie long, coarse and abundant. Length 5.0 mm. ; width 1.(3 mm. 



California (Lake and Los Angeles Cos.). 



This is the largest and stoutest species of the genus within our 

 boundaries, and is soriiewliat similar in fades to some of the rel- 

 atives of m07iodon, but is very distinct by reason of the truncate 

 tips of the elytra in the male. The male type described above is 

 from Lake Co., but the female before me from Los Angeles is 

 similar throughout, except that the thoracic process is broadly 

 dilated, rounded, and strongly constricted at base, and the elytra 

 have, at each side just behind the humeri, an inwardly and pos- 

 teriorly oblique dash of black. The male has the fifth ventral 

 truncate at tip, with its surface broadly flattened near the trunea- 

 ture. 



From serratus, to which it is allied more closely than any 

 other described species, 7'obusf.us maybe distinguished at a glance 

 by its larger size and stouter form, more strongly constricted 

 thoracic process of the female, longer and narrower crest, and in 

 peculiarities of elytral ornamentation. In sert-atus the thoracic 

 crest is very short. 



IV. alaiuedee. — Stout, convex, rather shining, testaceous, the head 

 darker, the elytra with a subsutural spot on each at basal fifth, and a trans- 

 verse, very uneven and widely interrupted fascia at apical third, which is 

 obliquely, more or less incompletely and indistinctly prolonged to the sutiu-e 

 just before the middle, of black. Head scarcely in the male, very distinctly 

 in the female, narrower than the prothorax, finely pubescent, the eyes moder- 

 ate, prominent, not quite as long as the tempora; antennai long, slender, 

 gradually and distinctly incrassjite, fully two-fifths as long as the body. Pro- 

 thorax distinctly transverse and oval in both sexes, finely, not very closely 

 punctate, coarsely pubescent, the tomentose line almost equal in width 



