92 



Distribution. Virginia; Washington, D.C. 



Undescribed species of this genus from the Western States, represented 

 in our collection, are not likely to occur in Canada, and are omitted. 



The Genus Gonophthorus Hopkins. 

 Journ. Wash. Acad. Sci., 5: 429, No. 12, 1915. 



Key to the Species. 

 The following key is adapted from Hopkins, loc. cit. : 



A Elytra with strial and interstrial punctures equal or subequal in size and 

 density on the dorsal and lateral areas; elytral punctures coarse and 

 impressed. 

 B 3rd interspace of the elytral declivity distinctly granulate; the declivity 



not strongly impressed. 



C Elytra with strial punctures confused on the dorsal area; the declivity 

 with the 1st interspace granulate. Dull black. 



resinosae Hopk. Page 93. 



CC Elytra with the strial punctures in obscure to distinct rows on the 

 dorsal area; the declivity with 1st interspace smooth, the 3rd 

 granulate; the pronotum dark, the elytra reddish. Oregon, in 

 cones of Pinus ponderosa. Length, 3-5-3-8 mm. 



ponderosae Hopk. 



BB 3rd interspace of the elytral declivity unarmed or only obscurely 

 granulate; the declivity not strongly impressed; the pronotum dark, 

 the elytra reddish brown; the front broad. Colorado, New Mexico 

 and Arizona, in cones of Pinus scopulorum, and P. ponderosa. Length, 

 3 2 mm. to 3 5 mm. scopulorum Hopk. 



AA Elytra with the strial and interstrial punctures unequal in density and 

 usually in size, those of the interspaces sparsely placed and usually 

 smaller than those of the striae, especially on the dorsal area. 

 Elytra with strial punctures in obscure rows on the lateral area ; pronotum 

 with punctures of posterior area fine; punctures of elytra distinct, those 

 of the striae rather dense. 



B The declivity with the 1st interspace granulate; the hairs moderately 

 long and erect; black, shining; the front narrow. 



coniperda Schwarz. Page 93. 



BB The declivity with the 1st interspace smooth except towards the apex; 



the hairs long. 



C Blackish brown, shining. Newport, Oregon, in cones of Pinus 

 contorta. Length, 3 1 mm. contortae Hopk. 



PLATE 21. 

 IPID BEETLES ALL GREATLY ENLARGED. (ORIGINAL.) 



Fig. 1, Polygraphus rufipennis Ky. (Upper left). 



Fig. 2, Hylastes porculus Er. 



Fig. 3, Platypus wilsoni Sw., male, declivity of elytra. 



Fig. 4, Platypus wilsoni Sw., female. 



Fig. 5, Pseudohylesinus grandis Sw. (Lower right) . 



