836 ACADEMY OF NATURAL SCIENCES 



name which I have here given j that of nigra being preoccu- 

 pied. The thorax approaches the form of that of a Sajpevda. 



3. L. PUBERA. — Black; thorax subglobular; elytra truncate 

 at tip. 



Leptura puhera Melsh. Catal. 



Body punctured, somewhat pubescent : head with dense small 

 punctures : antennae rather more than two-thirds the length of 

 the body : thorax convex, with rather large punctures : elytra 

 with numerous, rather large punctures, at tip transversely a little 

 truncated : beneath dull silvery sei'ieeous. 



Length three-tenths of an inch. [280] 



This is very different from the preceding in the form of the 

 thorax, as well as in color, &c. 



4. L. c^RULEA. — Slender ; bluish ; feet pale rufous. 

 Rhaginm rufipes Melsh. Catal. 



Body slender, punctured : head transversely much indented 

 near the nasus : palpi pale rufous : antenna3 situated on a tuber- 

 cle : thorax with a small tubercle, rather behind the middle on 

 eacn side ; an anterior and posterior, transverse, impressed line : 

 elytra acutely rounded at tip : feet pale rufous ; beneath dull 

 plumbeous. 



Length rather more than one-half of an inch. 



A very pretty little insect, belonging to the genus Toxotus 

 of Megerle. The name rufijies, is pre-occupied in this genus. 



[The type of Encydops Newman, but described by him as E. 

 paUipes. — Lec] 



5. L. sPH-^RicoLLis. — Black ; thorax contracted on the poste- 

 rior margin ; feet varied with yellowish. 



Body with very short hairs, somewhat sericeous : labrum and 

 anterior margin of the nasus yellowish : mandibles and palpi 

 yellowish, at tip piceous : thorax globular in the middle ; ante- 

 rior and posterior margins much contracted : elytra punctured ; 

 the punctures large at base, small towards the tip of the elytra : 

 feet yellowish ; thighs at tip, and tibia at base, blackish. 



Length nearly one-third of an inch. 



I received this insect from Mr. Charles Pickering, of Salem, 

 Massachusetts, to whom I returned for it the name of L. puhera ; 

 but on a strict comparison, I find that by the form of the thorax, 



[Tel. V. 



