﻿New Species of Ipidae from Maine 125 



pi'onotum as wide as elytra or slightly wider ; declivital sulcus 

 deeper ; lateral elevations, more pronounced, with coarser granules 

 and longer, more conspicuous tactile hairs. 



Type— A female, Township 7-R-12, Maine, M. W. Blackman, 

 collector ; Lot M-115. 



Host Tree — White spruce {Picea canadensis (Mill.) B. S. 

 and P.) 



The type series consists of fourteen specimens collected by the 

 writer in Township 7-R-12 in the Chamberlain Lake region of 

 Piscataquis County, Maine, July 24, 28, 1919. The beetles were 

 removed from their brood burrows in the limbs of a white spruce, 

 slightlj^ injured by a ground fire the preceding spring. The 

 beetles breed in limbs from a half inch to an inch in diameter, 

 the burrows being of the polygamous, radiate type, wath the egg 

 galleries which may reach a length of two inches, but are usually 

 smaller, extending either longitudinally or obliquely from the 

 nuptial chambers. 



There is considerable variation in size in the fourteen specimens 

 studied, the type representing about the maximum of the series. 

 The species is named in honor of Mr. H. B. Shepard, Forester for 

 the Eastern Manufacturing Company of Bangor, Maine. 



Pityophthorus dentifrons n. sp. 



Description of the adult female: Very dark reddish brown, 

 almost black ; 2.18 mm. long, 2.57 times as long as wide. 



Front flattened on an area of a little more than a semicircle, 

 .strongly impressed at the periphery, bordered with moderately 

 long incurved hairs (not so long as in pulcheUus) ; punctui'ed 

 finely but densely at the jiei-iphery which is bordered by a definite 

 raised semicircular ridge, punctures becoming progi-essively 

 sparser toward the center near the ei)istomal margin; area divided 

 by a very faint median carina. Eyes moderately granulate, rather 

 deeply emarginate. Antenna] club one-half longer than funicle, 

 nearly as wide as long, with first suture procurved, second and 

 third progressively more strongly procurved, the first two sinuate. 



Pronotum slightly wider than long, arcuate on the sides behiiul, 

 slightly constricted before the middle, rather narrowly j-ounded 

 in front ; front margin distinctly sei-rate ; anterior half rather 

 strongly asperate; summit rather prominent; transverse im- 

 pression just posterior to summit moderately deep, divided by a 

 median slightly raised impunctate line, and marked off laterally 

 by two obliquely divergent, slightly raised, impunctate lines ex- 

 tending only half way to the posterior margin of the pronotum, 

 posterior margin distinct, feebly bisinuate. 



Elytra, slightly wider than pronotum, 1.67 times as long as wide, 

 sides sub-parallel to level of origin of declivity, broadly rounded 

 posteriorly ; striae scarcely impressed, sutural stria more strongly, 

 with the punctures moderately coarse and deep, in fairly regular 

 rows;, interstrial punctures similar to those of the striae but very 



