﻿120 Neiv York ^^tatc College of Forestry 



iiiterstrial piiiictiires similar to strial, but sparse, more numerous 

 at the sides; disc of declivity shining, sparsely pubescent with 

 short inconspicuous hairs which are longer and more numerous at 

 the sides and rear. Declivity with narrow moderately shallow 

 sulcus; suture moderately elevated, not granulate; lateral eleva- 

 tions each with a sparse row of small short blunt tubercles on the 

 third interspace. 



3Iale with the front coarsely, roughly punctured, with distinct, 

 median, narrow, elevated carina below, ending above the epistomal 

 margin in a distinct tooth-like structure, with some indication of 

 a transverse carina at level of upper angle of eye ; pronotum 

 broader than in female, as wide as elytra ; declivity very narrowly 

 sulcate; sulcus nearly eliminated at its center by an inpushing 

 from each lateral convexity ; lateral elevations devoid of granules, 

 each, however, with a blunt tooth-like prominence, with its apex 

 in line with the second stria but belonging to the third interspace. 



Type — A female, Orono, Maine, July 12, 1919, M. W. Black- 

 man, collector ; Lot No. M-86-b. 



Host tree — Ahies halsamea (Linn.) Miller. 



Described from a series of seven females and two males collected 

 by the author at Orono, Maine, July 8, 12, 17, 19 and at Chemo 

 Lake, August 18, 1919. All of these specimens except one of the 

 males were taken from their burrows in the twigs of balsam fir. 

 The male collected at Chemo Lake was in a twig of red pine 

 (Pinus resinosa Ait.). 



All of the brood-burrows found were in twigs or small limbs 

 less than one-third of an inch in diameter. These galleries are 

 of the type common to the genus, consisting of a rather large 

 nuptial-chamber from which originate several egg-galleries. These 

 latter are rather short and groove the sapwood deeply. The bur- 

 rows studied were invariably found to originate at the base of a 

 smaller branch or twig where the bark is usually rougher and 

 thicker. This species was found only in dying or recently dead 

 twigs of balsam and was not taken in healthy material. It is 

 probably of little economic importance. It was associated in balsam 

 v/ith Fityophthorus canadensis Sw. F. puherulus Lee, F. opaculus 

 Lee. and Cryphaliis halsamens Hopk. In red pine it was found in 

 the same twigs as P. canadensis Sw. and P. puheridns Lee. 



Pityophthorus patchi n. sp. 



Description of adult female: Very dark reddish brown; 

 1.97 ram. long, 3.1 times as long as wide. 



Frons plano-convex on a nearly circular area extending nearly 

 from eye to eye; with an oval, densely pilose or spongy, slightly 

 elevated portion at the center, the long ciiameter vertical and the 

 transverse diameter about half that of th^ entire front ; pilose 

 area divided vertically by an indistinct carina ending in a small 

 but distinct tooth just above the epistomal margin ; lateral non- 

 pilose area moderately punctured, more roughly above, with very 



