H. C. FALL. 151 



L. crassicornis n. sp. 



Oblong ovate, flavotestaceous, prothorax a little darker, head rufo- 

 testaceous to piceous, antennae and legs pale, the femora darker. 

 Antennas not much longer than half the body, stout, joints 2-3 sub- 

 equal, together fully as long as joint 4. In the male joint 3 is tri- 

 angular and fully as wide as long, 4-10 triangular or subtriangular, 

 4 about one-half longer than wide. In the female the antennae are 

 less stout, joint 3 more oval and evidently longer than wide, the outer 

 joints subtriangular and rather less than twice as long as wide. 

 Upper surface throughout polished and very finely remotely punctu- 

 late. Tibiae straight in both sexes. Basal joint of hind tarsus barely 

 as long as the next two. Length, 3 mm. ; width, 1.5 mm. 



Mojave, California. June 1st. One cf, three 9s, taken 

 by Dr. Fenyes. 



The last ventral of the cf is broadly triangularly impressed 

 for the greater part of its length, truncate at middle posteri- 

 orly, with a minute incision on each side ; the basal joint of 

 front and middle tarsi not appreciably dilated. Crassicornis 

 closely mimics curvattcs, especially the females, which but 

 for the distinctly stouter and shorter antennae of the former 

 would be practically indistinguishable. In curvatus the an- 

 tennae are two-thirds as long as the body, the outer joints 

 slender and fully three times as long as wide. The males 

 are more readily separable, the prothorax being less broad 

 in crassicornis, and the antennae and tibiae very different. 



L. intermixtus n. sp. 



Moderately elongate, black, elytra deep blue or blue-black, shining, 

 femora piceous, tibiaae and tarsi testaceous, the four posterior tibiae 

 becoming gradually dusky apically. Antennae rather slender and 

 longer than half the body, piceous, three or four basal joints pale, 

 joints 2-3 subequal, together not or scarcelv longer than 4, the latter 

 more than three times as long as wide and not longer than 5. Head 

 rather small, eyes not prominent. Prothorax one-half wider than long, 

 widest at middle, sides parallel and broadly arcuate, scarcely sinuate 

 posteriorly, hind angles obtuse and not prominent, punctuation sparse 

 and minute. Elytra three-fifths wider than the prothorax, two-thirds 

 longer than wide, slightly oval, rather coarsely and closely punctate 

 with intermixed much finer punctures, surface polished and without 

 trace of reticulation. Basal joint of hind tarsus nearly as long as the 

 three following. Length, 3.9-4.3 mm. ; width, 1.9-2 mm. 



Beulah, New Mexico (Cockerell), two females; Santa 

 Rita Mountains, Arizona (Snow), one female. 



TRANS. AM. ENT. SOC, XXXVI. JUNE, 1910. 



