376 SCOLYTIDJE. 



[LeConte. 



are divided, and the parts connected by a smooth corneous line. The 

 scape of the antennae is long and strongly clavate ; the funicle is 5- 

 jointed, the first joint stout, as long as the others united ; 2-5 gradually in- 

 creasing in thickness, short, closely united, forming a conical mass, to which 

 the club is attached at the upper extremity of its base ; the latter is strongly 

 compressad, pubescent, and without sutures on both sides ; oval-pointed, 

 with the lower sida less curved than the upper, and broader at the base 

 than towards the tip, so as to be slightly securiform. The elytra are 

 rugosely punctulate, scarcely striate, clothed with small stout scales, and 

 with rows of scarcely longer erect bristles. The ventral segments are 

 nearly equal, but the first and fifth are a little longer. The tibiae are mod- 

 erately dilated with three or four small teeth near the tip, which is obliquely 

 truncate ; the inner angle is slightly mucronate ; the tarsi are slender, the 

 third joint not emarginate, the fourth small but distinct, and the fifth as 

 long as the others united, with divergent simple claws. 



1. P. ruflpannis Lee., Tr. Am. Eat. Soc 1868, 169; Apate (Lepisomus) 

 rufipennis Kirby, Fauna Bor. Am. iv, 193, tab. 9, fig 2 ; A. (L.) n'griceps 

 Kirby, ibid, 194, (immature;; P. saglnatus Mann., Bull. Mosc. 1853, 237; 

 Hylennus rufipennis Mann., ibid. 1853, 237. 



New Hampshire to Alaska, also in Georgia. The surface of the elytra 

 is slightly asperate near the base, which is very acutely margined ; the 

 rows of punctures which represent the striae are less indistinct in some 

 specimens than in others. The male has the front slightly impressed, with 

 a small frontal tubercle sometimes divided into two. Length 2-2.5 mm.; 

 .08-. 10 inch. 



In some specimens a few separate lenses are scattered along the line 

 between the two parts into which the eyes are divided ; in others thesj 

 are entirely absent. 



Apate (Lepisojnus) brevicornis Kirby, loc. cit. 194, may belong to this 

 genus, and would differ by the shorter antennae with smaller club. The 

 type is unfortunately in bad condition, and quite irrecognizable. 



Group II. piiioeotribi. 



This group is intermediate between the preceding and the following, and 

 differs from both by the antennil club being comprised of three separate 

 joints,, which in Phlceotribus form a lamellate ma^s, and in the European 

 genus Phlceophtkorus a loosely articulate club as in many Clavicornia. Dr. 

 Chapuis describes the antennae as frontal ; but I see no special difference 

 in their position from that observed in the preceding and following groups. 

 The head is but very little prolonged in front of the eyes, and there is no 

 preocular groove for the reception of the scape of the antennae such as is 

 obssrved in the two following groups. The tibiae are dilated, compressed, 

 obliquely rounded and serrate at tip, wi'h the inner angle slightly mucro- 

 nate ; the tarsi have the joints 1-3 short, gradually a little wider; third 

 not emarginate ; fourth very small ; fif Ji as long as the others united, with 

 divergent simple claws. The basal margin of the elytra is acute and 

 serrate. 



