160 MEMOIRS ON THE COLEOPTERA 



out, the elytra each with a very small pale spot near the side at 

 about apical fourth, the apex nubilously and feebly pale, these pos- 

 terior pale areas often wholly obsolete; under surface black, the legs 

 blackish-piceous to dark rufous; head slightly though evidently 

 narrower than the prothorax, with prominent eyes and deep sulci; 

 antennae slender, three-fourths as long as the elytra, black, the basal 

 joint obscure rufous, the medial joints two and one-half times as 

 long as wide; prothorax two-fifths wider than long; base but slightly 

 narrower than the truncate apex and nearly four-fifths the maximum 

 width; sides strongly rounded, arcuately oblique from about the 

 middle to the rather short subparallel basal part, well reflexed; 

 anterior impression distinct medially, the posterior broadly sulci- 

 form, punctate, obsolete at the middle; fovese deep, oval, adjacent 

 to the moderate carina; elytra oblong, with broadly arcuate sides, 

 one-half longer than wide, nearly two-thirds wider than the pro- 

 thorax, the humeri rapidly rounded, transverse internally at base; 

 striae moderately coarse, slightly impressed internally, obsolete in 

 apical fourth, the seventh series very fine, not extending to the mid- 

 dle; punctures strong, well separated; foveae as in peregrinum. 

 Length (cf 9 ) 2.8-3.35 mm.; width 1.1-1.23 mm. California (Sta. 

 Cruz to Mendocino). Fifteen examples connivens Lee. 



Form stouter, moderately convex, polished, piceous-black, the elytra 

 castaneous, generally without posterior paler maculation, but rarely 

 with exceedingly vague traces of maculation like that of the two 

 preceding; head fully four-fifths as wide as the prothorax, with large 

 prominent eyes; antennae nearly four-fifths as long as the elytra, 

 blackish, paler at base, the medial joints more than twice as long 

 as wide; prothorax distinctly larger than in connivens, but almost 

 similar in general form and structure, two-fifths wider than long; 

 elytra broader, nearly one-half longer than wide, barely one-half 

 wider than the prothorax, parallel, with broadly arcuate sides, the 

 humeri moderately rounded; apex rather more obtuse than in con- 

 nivens, the striation and punctures nearly similar. Length (cf 9 ) 

 2.8-3.15 mm.; width 1.15-1.25 mm. California (Mt. Diablo to 

 Mendocino Co.). Five specimens vapidum n. sp. 



Form rather more ventricose, smaller, shining, pale red-brown in color 

 throughout in the type, the head slightly more dusky; under sur- 

 face and legs pale red-brown; head only just visibly narrower than 

 the prothorax, the eyes moderate, prominent; antennae almost simi- 

 lar, dusky, broadly testaceous basally; prothorax relatively smaller, 

 a third wider than long; base distinctly narrower than the apex as 

 in vapidum; sides strongly rounded from apex to the basal parallel 

 part, which is nearly a fifth the total length; anterior impression 

 subobsolete, the posterior a shallow entire punctured sulcus, arcuate 

 in the middle but scarcely interrupted; foveae deep, elongate, near 

 the distinct carina; elytra relatively large, fully one-half longer than 

 wide, two-thirds wider than the prothorax; sides parallel, moderately 

 arcuate, the humeri as in vapidum, the striae moderate, not impressed, 

 except feebly suturad, obsolete only near the apex internally, more 

 abbreviated laterally as usual, the seventh series extending to about 



