102 Journal New York Entomological Society, voi.xvai. 



Pogonocherus concolor, new species. 



Almost uniformly clothed with yellowish cinereous pubescence ; elytral costse 

 without tufts. Antennae densely pubescent with short cinereous hairs and with 

 numerous, longer, erect hairs ; first joint elongate, feebly clavate, nearly reaching to 

 the lateral thoracic spines ; third joint slightly longer than fourth, the remaining 

 joints rapidly diminishing in length. Thorax with a large tubercle on each side ; 

 discal tubercles distinct, but without median smooth space ; pubescence dense and 

 unicolorous yellowish cinereous with a few longer, erect hairs intermixed. Elvtra 

 densely pubescent with yellowish cinereous hairs and intermixed with a few longer, 

 erect hairs; costte rather feeble; tubercles scarcely evident except the subapical, 

 which is very distinct ; punctuation sparse and not coarse ; apices rounded. Femora 

 and tibire clothed with cinereous short, and longer erect hairs. Abdomen finely and 

 densly punctate, feebly pubescent at middle with short hairs, which are much longer 

 at sides. Length 7 mm. 



California ? one male. 



This species has the form of EcyVi/s dasyscnis and will be easily 

 known by its uniform pale coloration, feeble elytral costse without 

 tufts and the longer first antennal joint, which, however, is slightly 

 shorter and a little stouter than in volitans. 



Table of the Species of Pogonocherus. 

 Elytra truncate or emarginate-truncate at apex ; apical angles more or less 



dentate i . 



Elytra rounded at apex 4. 



1. Elytra costate and with a distinct tubercle or tuft of black, erect set?e on each side 



of middle near base 2. 



Elytra not costate and without tubercle or tuft of black, erect setre at middle near 

 base 3. 



2. External apical angle of elytra with a relatively long, acute spine; pubescence 



almost uniformly gray, intermixed with long, erect, white hairs; elytra without 

 tufts of erect black seta;, but with a very prominent subbasal tubercle on each 



side of middle crinitiis Lee. 



External apical angle of elytra scarcely prolonged ; pubescence gray and white, 

 the latter color forming a more or less distinct subbasal fascia ; costa; with tufts 

 of erect black set?e .penicellatus Lee. 



3. Elytra on each side with three tufts of erect black setre arizoniciis Schaef. 



Elytra without tufts of erect, black set?e /jii.xtiis Hald. 



4. Elytral costfe without tufts of erect black setre, but with a few more or less dis- 



tinct tubercles ; color uniformly yellowish cinereous coucolor n. sp. 



Elytral costas with distinct tufts of black erect setfe 5. 



5. Thorax with a distinct shining tubercle on the median line slightly below middle ; 



pubescence dark brown, feebly variegated with white, the latter color condensed 

 on each side into a large spot at basal third alaskanus Schaef. 



6. Lateral thoracic tubercles more or less prominent, but never developed into an 



acute spine 7 . 



I^ateral thoracic prominences developed into a relatively long acute spine 9 



