TRIBE II. IPINI. 630 



-March 31. Quebec, Middle Atlantic, Southern and Western 

 States. Food plants, Pinus, Picea. The Tomicus cacographus 

 Lee. and T. pini Say of Zimmerman are synonyms. 



1029 (9128). IPS PIXI Say, 1825, 257; ibid, II, 319. 



Oblong, cylindrical. Brown or brownish-testaceous, shining, thinly 

 clothed with gray pubescence. Thorax oblong, subovate, slightly punc- 

 tate behind, apical margin feebly 3-sinuate. Elytra slightly striato-punc- 

 tate, intervals flat, with interior ones smooth; apex circularly excavate 

 truncate; edge of declivity 4-dentate, second and third teeth coalescent, 

 larger and distant from first. (Fig. 149, B.) Length 3.3 4.4 mm. 



Ithaca, N. Y., May 3. Eastern United States and Canada. 

 Food plants, Pinus. Picea and Larix. 



In connection with the above, I. Jiudsonicus Lee. (1876) from Hudson 

 Bay territory, I. interruptus Mann. (1852) from Alaska and Hudson Bay 

 territory, and I. perroti Swaine from Quebec may be mentioned. Though 

 the first, has been reported from Utah and Michigan and the second from 

 Quebec, neither is very likely to be found in our territory. LeConte's 

 remarks follow: 



~'T. Jiudsonicus n. sp. Specimens of a larger size (5 mm.) from Hud- 

 son Bay territory have the elytral strife composed of much larger punc- 

 tures than in T. pini, and the tooth of the fifth interspace has a tendency 

 to become thicker and curved. I would be unwilling to designate it by 

 a separate name, were it not that the sutures of the antennal club are 

 not bent forward at the sides but are nearly straight." 



T. interruptus. Alaska and Hudson Bay territory. The teeth of the 

 margin of the declivity are arranged as in pini and Jiudsonicus ; the 

 stria? are composed of still larger punctures than in the latter, and the 

 punctures of the interspaces extend forward almost to the base." 



The record of /. interruptus from Quebec may be based upon 

 a specimen of the following recently described species: 



1030 (- -). IPS. PERROTI Swaine, Can. Bnt., XLVII, 356, 1915. 



Slender. Dark reddish-brown, clothed with slender hairs, rather 

 densely on sides of pronotum and on sides of elytra below and about the 

 declivity, which is armed with four teeth on each side. Antennal club 

 with the first two sutures slightly bisinuate at middle, strongly bent 

 distad at the sides. Pronotum slightly longer than wide, caudal margin 

 strongly rounded, sides nearly straight and parallel for two-thirds, rather 

 strongly narrowed on distal third, asperate in front, sparsely punctured 

 behind, more coarsely toward sides, median smooth space nearly obsolete. 

 Front rather closely punctured but not extremely dense as in inter- 

 ruptus; perroti differs besides from interruptus in the usually smaller 

 size, more slender form, finer and sparser pronotal punctuation, much 

 more abrupt declivity with strongly marked sexual variation, and the 

 fewer and smaller granules on first and second interspaces. Length 3.5 

 4.2 mm. 



Type locality, Perrot, Quebec, in Pinus rcsutosa Ait. 



