18 CALIFORNIA ACADEMY OF SCIENCES. 



as wide as deep. This species is distinguished from slmia- 

 iocollis and converge us by its longer elytra and sliape of the 

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

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

 densely punctate, and more parallel head. 



Group B. 



The species here assigned to this group of the genus are 

 in general quite homogeneous in appearance, the elytra 

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

 notum always very sparsely and feebty punctate in the mid- 

 dle, Avith a broad median impunctate area. They, however, 

 vary in the degree of density of the cephalic punctuation, in 

 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 apex to base, and being in some 

 cases slightly wider than long and in others longer than 

 wide, within, however, very narrow limits. The head is 

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

 wider than the prothorax. 



14— L. malaca ii. sp. — Eather robust, depressed; piceons-black, abdomen 

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

 testaceous throughout; antennae fuscous, pale testaceous at tip; pubescence 

 sparse anteriorly, 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 distinctly 

 arcuate; base broadly truncate, angles rather broadly 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 ; 

 antennal tuberculations very small, rather prominent; surface very eve«, 

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

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

 head and prothorax together; basal joint nearly as 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 nnd 

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

 and very slightly arcuate; base and apex broadly, moderately and almost 

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



