THE CANADIAN ENTOMOLOGIST. 391 



species figured in " American Insects " is too cleanly and clearly marked 

 an insect, and is possibly Gelasfocoris variegatus or one of the several 

 undescribed Western and Southern forms I am acquainted with. These 

 are the principal points worthy of comment in the section devoted to the 

 Waterbugs, wherein my familiarity with the subject enables me to appre- 

 ciate more keenly any slip. 



The landbugs, with which my acquaintance is not very profound, are 

 naturally much better treated, as tliose referred to are of economic impor- 

 tance and therefore much more studied. Here, however, I would call 

 attention to a printer's error on page 214, v^hexe. Jalysjis spijiosus is written 

 ''' Zalysus'" sp'niosus. The distinction \iQ\.\NtQ\\ Aradids and the bedbug 

 is thus brought out on page 208, " But all adult flatbugs have wings, while 

 all the bedbugs are wingless." Unfortunately for the accuracy of this 

 statement, Aradiis cinnamo?ieiis, which in colour and size very much 

 resembles the uninvited midnight guest, is, at least in this vicinity, 

 normally wingless in the adult. 



It is to be regretted that a recent work in a field where great steps 

 forward are being taken constantly, should have its generally high 

 standard lowered by inaccuracies which might easily have been avoided. 

 Why are not particular Orders or portions of Orders submitted to author- 

 ities in the groups of which they treat before the MS. goes to the printer ? 

 There is much room for disagreement in matters of opinion, but none in 

 matters of proven fact. The book is typographically excellent, and the 

 figures, at least in the Heteroptera, very finely drawn, engraved and 

 printed. In this respect it is superior to its predecessors, and save for 

 these corrections and notes, the text is very suitable for general students 

 and very entertainingly written. 



A GALL ON BEARBERRY (ARCTOSTAPHYLOS). 



BY T. D. A. COCKERELL, BOULDER, COLO. 



In the case of any circumpolar plant, it is of much interest to learn 

 whether the insects and fungi attacking it are the same in Europe, Asia 

 and America. The Bearberry ( Arctostaphylos uvahirsi) is already known 

 to have a coccid {Targionia Dear?iessi, Ckll.) infesting it, which is only 

 known to occur in America. This T. Dea?-?iessi, however, is not confined 

 to the Arctostaphylos, for Professor L. Bruner sent me specimens which 

 he collected Oct. 24, 1900, at Weeping Water, Nebraska, on Ceatiot/uis 

 Americanus. 



At Ward, Colorado, July 19, 1905, at an altitude of about 9,000 feet, 

 I found the Arctostaphylos uva-iirsi badly infested by an aphid which 

 produced bright red galls about 10 mm. long and 4 broad upon 



November. 1905. 



