NOKTH AMERICAN COLEOPTERA. 89 



The elytral sculptnie is sufficiently explained above. On the front 

 of the head a triangular space, from the vertex to the middle of the 

 gente each side, is smoother and the tubercles larger and more dis- 

 tant. 



Occurs at the margin of streams from the JMiddle States to Texas. 



Kli. calif'oriiiciis Horn.— Oblong, moderately convex, piceous opaque, legs 

 ])iownish. Antennae pale. Head moderately convex, granulate, the granules 

 anteriorly coarser and more shining. Clypeus emarginate, the angles obtuse, 

 sides oblique feebly arcuate, gense obtuse. Thorax one-third wider than long, 

 anterior angles obtuse, sides irregularly arcuate, lateral margin distinctly crenu- 

 late, hind angles very obtuse, base arcuate, the marginal line distinct ; disc mod- 

 erately convex, closely granulate with four discal transverse ridges, two entire, 

 two interrupted as in scaber, the ridges very feebly elevated, the granules not 

 coarser. Elytra as wide at base as the thorax, humeri distinctly dentate, disc 

 finely striate, striae indistinctly catenulately punctured, intervals flat, with two 

 rows of granules, the inner granules more elongate and less closely placed, the 

 outer row smaller and more closely placed, on the outer intervals the inner row 

 of granules is indistinct. Mesosternum opaque, densely scabrous, finely carinate 

 between the coxse. Metasternum with few coarse punctures at middle, scabrous 

 at the .sides. Abdomen with an irregular transverse series of rather fine, closely 

 l»laced punctures, each segment crenate in front. Posterior femur almost en- 

 tirely smooth, the marginal line entire, first joint of hind tarsus as long as the 

 next three. Length .12-.16 inch ; 3-4 mm. 



On comparing this species with scaber it will be observed that the 

 thoracic ridges are less evident and the granules are not more coai'se 

 than those of the rest of the surface. The lateral margin is irregu- 

 larly arcuate, and the extreme edge distinctly crenate. In the pres- 

 ent species there are two distinct rows of tubercles on the intervals, 

 while in scaber the outer row of tubercles forms an entire carina. 



Occurs in southern California at the margin of streams, especially 

 common near Visalia. 



Rli. SWiiatns Lee— Oblong, moderately convex, piceous l)luck, (ipa<iue, 

 elytra sometimes brownish, body beneath and legs reddish brown. .Vntenuie 

 pale. Head densely, nearly equally granulate. Clypeus onarginate at middle, 

 the angles each side well defined, rather acute, sides feebly arcuate, the genie 

 very obtuse. Thorax one-fourth wider than long, not narrowed in front, ante- 

 rior angles obtuse, sides arcuate, the margin distinctly crenate, hind angles 

 broadly rounded, ba.se arcuate, tlie marginal line feeble, di.sc moderately convex, 

 surface closely granulate, with four very indistinct, transverse, discal ridges 

 compo.sed of granules very slightly larger, the first ridge alone entire. Elytra 

 as wide as the thorax, humeri slightly dentate, disc finely and indistinctly striate, 

 the intervals with two nearly equal rows of slightly elong-ate tubercles. Meso- 

 sternum opaque, densely punctate, finely carinate between the coxa>. Metaster- 

 num slightly scabrous at sides. Abdomen nearly smooth, the transverse row of 

 jiunctures scarcely visible on the segments, each segment crenate in front. Pos- 

 terior femora smooth, the marginal line deep and entire, fii-st joint of hind tai-sus 

 nearly as long as the next three. Length .r2-.14 inch ; 3-3.5 mm. 



TRANS. AMEK. ENT. SOC. XIV. (12) APRIL, 1887. 



