ANNALS OP THE LYCEUM. 



^97 



acutel oval, truncated : elytra dark brown, obscure piceous at 

 base; stria; slightly impressed, acute, punctured : beneath piceous : 

 postpectus and middle of the pectus blackish : feet pale. 



Length seven-twentieths of an inch. 



This species is very similar to the preceding, but its greatly 

 superior magnitude puts their specific difference beyond a doubt. 



[Also a Limonius. — Leg.] 



19. E. rectangularis. — Fuscous; robust; posterior angles 

 of the thorax rectangular. 



Desc. Body robust, very dark brown, almost blackish, with 

 numerous, short, A^ery robust whitish bristles ; head with the 

 hairs incurved ; transverse line acute : antennae not reaching 

 more than half the length of the thorax, serrated, pale rufous, 

 first joint fuscous, second and third joints subequal, terminal 

 joint oval : palpi pale rufous : thorax subquadrate, rapidly nar- 

 rowing before the middle ; posterior angles not produced, but 

 rectangular : elytra with regular series of large profound punc- 

 tures : feet dull rufous. [264] 



Length two-fifths of an inch. 



This remarkable species I found near the Rocky Mountains, 

 during the journey of Major Long's exploring party. It differs 

 widely from any other species I have seen, by its general aspect, 

 as well as by its short antennae, (which were completely con- 

 cealed in the lateral fissures of the pectus,) and the rectangular 

 posterior thoracic angles. 



[Belongs to Laco7i, which I formerly did not consider sufl&- 

 ciently distinct from Adelocera to be received as a genus. — Lee] 



20. E. cucullatus. — Thorax rather long; frontal line re- 

 markably elevated, and concave above. 



Desc. Body reddish-brown, with very short hairs : head with 

 the frontal transverse line very much elevated and prominent, 

 lanciform, obtusely rounded and concave on its superior surface : 

 antennae rather long, slender, not serrated, second joint not much 

 shorter than the third : thorax longer than broad, rather slender, 

 with a longitudinal impressed line ; a little narrowed behind the 

 anterior angles, and before the posterior ones, the latter not very 

 prominent, obtuse : elytra indented at the base of each, with im- 



