320 LE CONTE.— LONGICORN COLEOPTERA 



The male is much more slender than the female, and the lateral outline of the 

 elytra is concave. I found a considerable number of this species at Eagle Harbor, on 

 Lake Superior. 



TOXOTUS, Serv. Meg. 



Oculi paulo prominuli, antice emarginati postice vix truncati. 

 Mesosternum angustum subparallelum, truncatutn. 

 Palpi paulo dllatati apice subrotundatim truncati. 

 Tibias intus ad apicem oblique truncatae, calcaribus ante apicem sitis. 

 Corpus gracile, utrinque angustatum, vel subangustatum. Antennae ante oculos sitae, longiusculae, minus 



tenues, articulo ^'^ brevi. Mentum transversum antrorsum subangustatum, truncatum. Thorax 



utrinque constrictus, lateribus vel tuberculatus vel spinosus. 



The form of the head varies in this genus. In some species the sides are parallel 

 as in Rhagium, (T. cyliiidricollis,) in others where the eyes are more prominent, the 

 head appears narrowed behind those organs, {T. cirinamopterus.) The character that 

 especially distinguishes this genus, is the position of the terminal spurs of the tibiae, 

 vphich, instead of being apical, are situated at the upper end of a deep oblique 

 incisure. 



1 . T. ScHAUMii. — Niger thorace acute spinoso, utrinque valde constricto, elytris rugulosis, albido-pruinosis 



subparallelis apice oblique truncatis, femoribus medio late flavis. Long. -97. 



This fine species is found in Ohio. I have dedicated it to my friend Dr. Schaum, 

 by whom it was presented to me. 



Black, finely pubescent. Head finely punctured, with an impressed line between 

 the eyes ; labrurn rounded, emarginate. Antennse with the third joint elongate, the 

 fourth shorter than the fifth, which is equal to the following. Thorax narrowed in 

 front, shining, finely and sparsely punctured, lateral tubercle acute, dorsal line deep. 

 Elytra scarcely narrowed behind, finely rugous, pruinose with very short hair, tip 

 obliquely truncate inwards. Legs black, femora yellow, base and tip black. 



2. T. cYLiNDRicoLLis.— Rufus, supra fuscus, vel niger, subtiliter punctulatus, sericeo-pubescens, capite 



profunde canaliculato, thorace canaliculate, tuberculo obtuso, elytris postice angustatis, apice intus 



profunde incisis. Long. -S. 

 Say. Journ. A. N. S., 3, 417. 

 T. dentipennis, Hald. 58 

 T. dives, Nm. Entom. 

 Var. T. airatus, Hd. 58. 



Varies much in color : but the base of the femora, the under surface of the body, 

 and the tip of the antennse are always rufous. The male is more slender, and the 

 antennae are as long as the body. Pennsylvania, Alabama, Missouri. 



