FALL AND COCKERELL. 227 



Elmis aiitennatus n. sp.-Stout, ovate, black, feebly bronzed, sbining, 

 sparsely oehreo-pubescent, tbe alternate elytral intervals more distinctly so. 

 Antennae testaceous, becoming piceous at tip ; 10-jointed, first and second joints 

 stouter, third twice as long as wide, 4-7 feebly obconic and slightly longer than 

 wide; 8-10 forming a distinct club not quite as long as the five preceding joints; 

 eighth joint similar in form to the seventh but larger, ninth about as wide as 

 long, tenth elongate-oval, pointed. Prothorax a little wider than long, sides 

 rather strongly convergent from the base, broadly rounded at middle and some- 

 what sinuate "both before and behind; hind angles slightly acute, front angles 

 strongly so; disk distinctly channeled at middle, basal plica moderate, not 

 reaching the middle, side margins narrowly granose, punctuation very fine and 

 sparse, punctures distant from three to five times their own diameter. Elytra 

 broadly subovate, striae slightly impressed and moderately punctured; inter- 

 spaces broad, nearly flat, sparsely punctulate. Beneath pale, finely densely 

 pubescent. Legs testaceous, the thighs darker. Length 2.75 mm. ; width L4 mm. 



Described from two examples taken at Beulah in August by 

 Prof. Cockerell. In both specimens the last ventral segment is 

 broadly emarginate at apex, possibly a male character. 



This is the first species to be made known with 10-jointed an- 

 tennae. The structure otherwise seems closely in agreement in all 

 essentials with typical Ebnis. 



ELATERID^. 



L.inionius sinuifrons n. sp.— Dark brown, shining; pubescence gray- 

 ish, moderately conspicuous. Antennae surpassing by two joints the hind angles 

 of the prothorax; second and third joints small, the third very slightly longer 

 and more triangular; fourth joint widest, about twice as long and nearly twice 

 as wide as the third, outer angle acute. Head closely strongly punctate, front 

 broadly concave, margin well produced, rather deeply sinuate at middle, feebly 

 reflexed laterally. Prothorax longer than wide, moderately narrowed in front, 

 sides feebly arcuate, faintly sinuate before the hind angles. Surface strongly 

 closely punctate at sides, the punctures becoming a little smaller and more re- 

 mote at middle, where they are separated from one to two times their own diam- 

 eters; hind angles short, scarcely divergent, carinate. Elytra finely striate, 

 striae 'finely punctate, intervals rather wide, flat on the disk, a little convex later- 

 ally, numerously finely punctate. Beneath strongly and closely punctate ante- 

 riorly, more sparsely on the metasternum and abdomen : flanks of prothorax 

 beneath without trace of smooth space posteriorly; first joint of hind tarsi much 

 shorter than the next two. Length 113 mm. ; width 3i mm. 



Arizona (Williams). A single example is before me collected by 

 Barber and Schwarz. 



This species is about the size of an average griseus, but is a trifle 

 more slender, with less conspicuous pubescence, longer antennae, with 

 a much greater disparity between the third and fourth joints. 



TBANS. AM. ENT. SOC. X.XXIII. JUNK. 1907. 



