18 CALIFORNIA ACADEMY OF SCIENCES. 



as wide us deep. This species is distinguished from sunia- 

 iocolUs and convenjois by its longer ehira and sliape of the 

 pronotum, from lepida by its sexual characters, denser pub- 

 escence, color, and especially by its much narrower, more 

 deusel}- ]3uuctate, and more parallel head. 



Group B. 



The species here assigned to this group of the genus are 

 in general quite homogeneous in ap])earance, the elytra 

 being always much longer than the prothoras, and the pro- 

 notum always very sparsely and feebly ]ninctate in the mid- 

 dle, with a broad median impunctate area. The}', however, 

 vary in the degree of densitj^ of the cephalic punctuation, iu 

 the prominence of the basal angles, and slightly in the 

 form of the pronotum, this generally being nearly quadrate 

 with the sides parallel, but sometimes having the sides dis- 

 tinctly convergent from apes to base, and being in some 

 cases slightly wider than long and in others longer than 

 wide, within, however, yer}' narrow^ limits. The head is 

 usually moderate in size, sub-quadrate, and never very much 

 w'ider than the prothorax. 



14 — L. malaca n- sp. — Eather rolmst, depressed; piceoiis-black, abdomen 

 paler at tip; pronotum slightly paler, dark rufo-fuscous; legs pale yellowisb- 

 testaceons throughout; anteunx- fuscous, i^ale testaceous at tip; pubescence 

 sparse autcriorlj', rather coarse, dense and conspicuous on the elytra and 

 abdomen; integuments strongly shining, very feebly sub-alutaceous. Head 

 rather large, slightly longer than wide; sides moderately long and distinctlj' 

 arcuate; base broadly truncate, angles rathor broadlj' rounded; eyes mod- 

 erate, at twice their length from the base; epistoma moderately produced, 

 very broad, sides strongly convergent to the apex, which is squarely truncate; 

 anteunal tuberculations very small, rather promineut; surface very evea, 

 moderately convex, very finely, evenly and densely punctate, with a narrow, 

 even, impunctate line in the middle; antenuns slightly shorter than the 

 head and prothorax together; basal joint nearly ns long as the next three 

 together, second very slightly shorter than the third and longer than the 

 fourth, tenth as long as wide. Prothorax very slightly wider than long ,tud 

 just visibly narrower than the head; sides very feebly convergent throughout 

 and very slightly arcuate; l)ase and apex broadly, moderately and almost 

 equally arcuate, the former sub-truncate in the middle; anterior angles 



