THE CAxVAblAN ENTOMOLOGIST. Ill 



Head ; face entirely yellowish-rufous, coarsely striated and sparsely 

 set with short hairs; vertex rugose-punctate ; antennae 14-jointed, and in 

 colour like the face, a little infuscate at the tip. Thorax above a little 

 darker rufous than the face, transversely rugose ; parapsidal grooves 

 narrow and rather indistinct, but extending to the collar ; no median 

 groove; parallel lines extending back from the collar, short and rather 

 indistinct, sparsely set with short recumbent hairs ; scutellum coarsely 

 rugose, the foveae oblique and shining black at the bottom ; mesothor- 

 acic pleurae coarsely aciculate ; in two specimens the lower half only is 

 black, and in two others, a little smaller, the entire pleurae are 

 black. Abdomen : petiole coarsely striated ; second segment very 

 smooth and shining, and finely punctured on outer third. Legs, includ- 

 ing coxae, uniform light yellow, except the tarsi of the third pair and the 

 tips of the last tarsus in the others, which are black. Wings hyaline, 

 nervures light, areolet obsolete. Length, 2^ to 3 mm. 



Male. The male differs from the female as follows : Length, 2^ 

 mm.; vertex above antennae, except a narrow orbital line, black ; antennae, 

 15-jointed; thorax, entirely black; abdomen, black, except the tip of the 

 second segment, which is yellowish, and the entire tibiae of the pair of 

 legs are blackish. 



The above descriptions are made from four females and five males 

 which issued from the galls between March 1st and 10th, 1893. 



The galls from which this very pretty Synergus was reared resemble 

 very closely those of Holcaspis monticola, Gill, MS., the description of 

 which is already in the hands of the printer for publication. The galls 

 were collected by Mr. Trevor Kincaid, of Olympia, Washington, from 

 twigs of Quercus garryana. 



WHICH SIDE OF THE TREE DOES PHLCEOTRIBUS 



LIMINARIS ATTACK? 



BY F. M. WEBSTER. 



Recently, while studying the habits of this beetle in the peach orchards 

 of Catawba Island, on the south shore of Lake Erie, I was surprised to 

 observe that the fall attack had invariably been made on the east or south- 

 east side — which is here the land side of the trees — and old trees, where 

 the bark of the trunks was very rough, were more seriously affected. On 

 mentioning the fact of this apparent discrimination in point of attack to 

 my friend Dr. D. S. Kellicott, he recalled that the same phenomenon 

 occurred about Buffalo, New York. 



