258 Journal New York Entomological Society, f^'o'- xxiv. 



In Dr. Leconte's table the majority of our species having the hind 

 angles unicarinate are said to have the antennje strongly serrate and the 

 joints not longer than wide. However, rithricoUis, apicatus and others 

 have the joints rather longer than wide, especially the outer, and not 

 strongly serrate. E. xanthomiis is also out of place in the table as 

 the third antennal joint is triangular in both sexes and ought to go 

 therefore with nigricollis, lintcus, discoidcus, etc. In "Revision of 

 the Elateridae" Leconte describes the third joint correctly as tri- 

 angular. These errors will cause a little trouble as also the omission 

 of the number 13 in front of line 27 from the top in the table. 



Elater oregonus new species. 



Black ; legs, prothorax above and below, except prosternum, red, antennse 

 brownish. Head somewhat coarsely, evenly punctate ; antennae feebly serrate ; 

 joints longer than wide, third joint a little longer than second, not triangular, 

 both together a little longer than fourth. Prothorax rather feebly arcuate 

 at sides ; hind angles slightly divergent, unicarinate ; disk rather sparsely 

 punctate. Elytra nearly parallel to about middle, then feebly narrowing to 

 apex ; striae moderately coarsely punctate, punctures finer towards apexi ; 

 intervals flat, very sparsely and generally uniseriately punctured. Meta- 

 sternum rather coarsely punctate, abdomen more finely. Length 7.5 mm. 



Dilley, Oregon (coll. O. Dietz). 



The elongate antennal joints and bicolored upper surface would 

 place this species with mixtns and pullus in Dr. Leconte's table, from 

 both it differs in its red prothorax and unicolored black elytra. The 

 antennal joints are slightly more elongate than in any of these two 

 species. 



The prothorax is not entirely clear red, having on each side of 

 middle near apex a faint, dark cloud, the posternum is reddish near 

 apex and between the coxae, the last two ventral segments are brown. 



Megapenthes longicornis new species. 



Narrow elongate, ferruginous, head piceous, underside, antennae and legs 

 paler. Head coarsely, densely punctate; antennae very elongate in the male, 

 shorter in the female, second and third joints small, third a little longer than 

 second, both together shorter than the fourth in the male, but about as long 

 as the fourth in the female. Prothorax gradually narrowing to apex ; sides 

 nearly straight in the male, feebly rounded in the female, hind angles not 

 divergent ; surface moderately coarsely punctate. Elytra nearly parallel to a 

 little behind middle, then arcuately narrowing to apex ; striae moderately 



