98 PROCEEDINGS OF THE NATIONAL MUSEUM vol.89 



juncture of the two segments; sLxth segment flattened, as long as or 

 slightly longer than the fifth, sparsely finely punctured, and with a 

 definite though shallow median longitudinal groove. Front tarsus 

 with first segment slightly though perceptibly prolonged into a slight 

 spine on inner side of apex; claws usually very finely, hardly evidently 

 crenulate and without a tooth (a very fine suggestion of a tooth 

 rarely noticeable). Middle claws as in front. Hind claws also 

 minutely crenulate but usually with a very faint submedian tooth 

 among the serrations, at least on the inner claw. First segment of 

 hind tarsus shorter than the second, and very strongly prolonged 

 inwardly at apex into a blunt tooth or lobe, the first segment being 

 somewhat triangular in shape (see fig. 4,/). 



Female. — Antennal club shorter than funicle. Pygidiiun evenly 

 convex, entire disk polished and with regularly arranged, fine, dense 

 punctures, the hairs short and suberect; apex thickened and ciliate. 

 Abdomen evenly convex, highly polished at middle and with very fine 

 and dense setigerous punctures, the hairs fine and minute; fifth and 

 sixth sternites of approximately equal size, the sixth and apical por- 

 tions of the preceding segment more coarsely punctate than the re- 

 mainder of the abdomen. All claws with a short triangular tooth at 

 the middle, surface between the tooth and claw base minutely serrate. 

 First segment of the front tarsus with a blunt, short spine at inner 

 apex. Otherwise similar to male. 



Length. — 12-15.5 mm. Width. — 6-7 mm. 



Type. — In the LeConte collection. 



Type locality. — "Piatt River, Kansas." 



Specimens examined. — Males, 66; females, 39. California: Bar- 

 stow, July 18 [Saylor]. Arizona: General in the southeastern part 

 of the State. Recorded several times as taken on ponderosa pine 

 (Pinus ponderosa), July and August. Colorado: General in the 

 State; seen from Larkspur to Pagosa Springs and from the country in 

 between ; June to August; recorded on ponderosa pine. New Mexico: 

 General; seen from Rio Arriba County and southeast to Rosweli; 

 June to September. 



Remarks. — In habitus and type of male genitalia the present species 

 is most closely related to L. jimhripes and allies but is abundantly 

 distinct in the hardly pilose hind tarsi and tibiae, the male genitalia, 

 etc. Has been taken on several occasions in the adult state feeding 

 on yellow pine. An interesting note concerning the life history is the 

 following, excerpted from the field notes of A. J. Jaenicke, at the time 

 stationed at the Fort Valley Experiment Station at Flagstaff, Ariz.: 

 "Larvae of these beetles are doing extensive damage to the western 

 yellow pine seedlings at Flagstaff, by cutting off the roots." 



