THE CANADIAN ENTOMOLOGIST. 275 



Alcephus nitidipennis, n. sp. — Elongate, rufo-testaceous, head and 

 thorax opaque, elytra strongly shining ; pubescence very fine, sparse, pale 

 in colour, and extremely inconspicuous. Eyes rather large, plainly more 

 prominent than the sides of the front, separated beneath by a distance not 

 much less than twice the length of the second antennal joint. 



Antennse slender, filiform, two-fifths the length of the body, the eighth 



joint reaching the hind angles of the prothorax ; fourth joint very nearly 



four times as long as wide ; outer joints decreasing a little in length, the 



ninth and tenth feebly obconical, the eleventh fusiform, pointed, and equal 



in length to the tenth. Prothorax one-third wider than long, sides 



parallel in basal half, then rounded and moderately convergent to apex ; 



margin barely perceptibly sinuate before the hind angles, the latter right 



and not rounded at vertex ; disk rather feebly longitudinally impressed, 

 the impression deeper behind ; flattened at sides posteriorly ; surface of 

 head and prothorax densely, finely reticulate punctate. Elytra scarcely 

 one-fifth wider, and a little more than three times as long as the prothorax; 

 sides parallel in rather more than basal half, then gradually narrowed to 

 apex ; surface sparsely finely punctate. Under surface of prothorax more 

 coarsely reticulate than the upper, mesosternum reticulate, abdomen 

 sparsely, finely punctate. Basal joint of hind tarsus subequal in length to 

 the entire remainder ; second and third joints each more than twice as 

 long as wide. 



Length, 6.5 mm.; width, 2 mm. 



Two examples, not differing perceptibly, from Palm Springs, Cali- 

 fornia. Others are in the collection of Dr. Fenyes, from whom I received 

 my specimens. As compared with the present species, pallidus is dis- 

 tinctly larger (8 to 9 mm.), of rather stouter form, with the elytra nearly 

 one-half wider than the prothorax, the latter one-half wider than long. 

 The antennae are shorter and stouter, the fourth joint barely twice as long 

 as wide ; eyes much smaller and scarcely more prominent than the sides 

 of the front ; basal joint of hind tarsus shorter than the remainder, the 

 second and third joints less than twice as long as wide. The elytra are 

 much less shining than in fiiiidipennis, and are apparently entirely devoid 

 of pubescence. One of the two examples of nitidipennis is surely a male, 

 but there is no trace of the small brush of hairs near the tip of the penul- 

 timate ventral segment mentioned in the description oi pallidus. 



