162 MEMOIRS ON THE COLEOPTERA. 



abdomen evidently narrower than the elytra, the sides only just visibly 

 converging and nearly straight throughout, the fifth tergite fully three-fourths 

 as wide as the first and not longer than the fourth, the first three distinctly 

 shorter than the fourth or fifth. Length 1.35 mm.; width 0.32 mm. Cali- 

 fornia (Siskiyou Co.). 



This is a minute species, distinct in its much less fusoid outline, 

 well developed elytra and longer basal joint of the antennae, the 

 latter being rather shorter than usual. 



Colpodota sonomana n. sp. Rather stout, fusoid, convex and shining, 

 the punctures very fine but not very asperate, close and asperulate on the 

 elytra, the hairs on the abdomen unusually coarse; color somewhat pale 

 piceous-brown throughout, the legs pale; head transversely orbicular, the 

 eyes large, at much less than their own length from the base, the subparallel 

 tempora not more prominent; antennae brown, moderate in length, rather 

 strongly incrassate, the second joint about as long as the first and but very 

 little longer than the third, the fourth about as long as wide, obtrapezoidal, 

 the fifth distinctly wider than long, the outer joints distinctly transverse, 

 the last rather obtuse, as long as the two preceding; prothorax only moder- 

 ately transverse, rather large, the apex narrower than the base, which is 

 oblique at each side, the sides obviously converging from the rather evident 

 basal angles to the apex and broadly rounded, much wider than the head 

 and as wide as the elytral base, unimpressed; elytra rather short, with evi- 

 dently diverging sides, the suture equal in length to the prothorax; abdomen 

 much narrower than the elytra, the sides parallel and arcuate basally, some- 

 what rapidly converging behind the middle to the narrow apex, the fifth 

 tergite fully one-half longer than the fourth. Length 1.63 mm.; width 0.4 

 mm. California (Cloverdale and Mt. Diablo). 



Distinguishable from fatigans, to which it seems to be most 

 closely allied, in its rather broader and more fusiform outline, more 

 shining surface, owing to the less dense and less asperate sculpture, 

 in its less evenly rounded thoracic base and in abdominal and 

 antennal structure. 



Colpodota inceptor n. sp: Feebly fusoid, very moderately convex, rather 

 shining, the punctures fine and asperulate, moderately dense, asperulate and 

 close-set on the abdomen; color rather pale piceous, the abdomen blackish, 

 the legs pale; head convex, wider than long, parallel at the sides, the eyes 

 large, at much less than their own length from the base; antennae moderate 

 in length, piceous, paler basally, sensibly incrassate, the second joint as long 

 as the first but thinner, much longer than the third, the fourth obtrapezoidal, 

 a little wider than long, the outer joints decidedly transverse, the last ogivally 

 pointed, as long as the two preceding; prothorax moderately transverse, 

 convex, subparallel and broadly rounded at the sides, the apex but little 

 narrower than the subevenly rounded base, unimpressed, distinctly wider 

 than the head and as wide as the elytral base; elytra only moderately ab- 



