INSECTS AFFECTING PARK AND WOODLAND TREES 489 



This species was found on the shores of Lake Superior by \)r 

 LeConte, is reported from Ottawa Can., by Mr Harrington, and Dr Ham- 

 ilton states that it is la're in southwestern Pennsylvania. It has also been 

 listed from Mt Washington, by Mrs Slosson. 



Dermestes pulcher Lec. 



A brown-headed, black-winged, rather stout beetle about % inch long, was bred from 

 larvae taken from a hollow oak. 



This species, according to Jayne, may be easily recognized by its gen- 

 eral red color and almost entirely black wing; covers, the flattened thorax 

 with two basal foveae, and the absence of abdominal spots and white rings 

 on the femora. He records this species from the Southern, Middle and 

 Western States. It must be rare in southwestern Pennsylvania, since Dr 

 Hamilton met with only two specimens. It has been listed also from the 

 vicinity of Buffalo N. Y. and Cincinnati O. 



Ditoma quadriguttata Say. This minute, black and reddish beetle 

 occurs in early spring under dead bark of beech stumps. It is about 3 32 

 inch long. Head and thorax almost entirely black, coarsely punctured with 

 conspicuous lateral ridges on the latter. The wing covers have an oblique, 

 reddish stripe at the base of the wings, a similar spot near the middle and 

 a smaller one at the posterior third. These organs are conspicuously 

 striated and with coarse, distinct punctures between the ridges. 



Mycetochares binotata Say. This species occurs under poplar bark. 



Cerylon castaneum Say. This minute, reddish, rather flattened beetle 

 occurs under dead bark of maple stumps in early spring. It is about l j 1 ( t 

 inch long, the head somewhat rounded, the thorax rather irregularly punc- 

 tured and the wing covers finely striate with series of confluent punctures. 



Silvanus imbellis Lec. This minute, slender, grayish brown beetle 

 occurs sparingly under the dead bark of beech and maple in early spring. 

 It is about y% inch long, slender, the head and thorax grayish, rather thickly 

 and irregularly punctured ; the wing covers distinctly striate with a series of 

 nearly confluent punctures. 



Catogenus rufus Fabr. This dark, reddish, somewhat flattened beetle 

 has been taken under dead elm bark in May. It is nearly Y / 2 inch long with 

 conspicuous moniliform antennae. The head and thorax are finely and 

 irregularly punctured and the wing covers marked by a series of deep 

 grooves and with the humeral angles continued as a conspicuous ridge their 

 entire length ; costal margin strongly sinuate. 



Cucujus clavipes Fabr. This flattened, bright or dark reddish beetle 



