180 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 15 



Upon making an observation on the 30th of September I found the willow leaves 

 over quite a large area practically all killed and blackened. Adult beetles solidly 

 covered the under surfaces of the remaining green leaves. They were also attacking 

 the poplar, the narrow leaved willow, Salix exigua,a third species of willow, Salix 

 schouleriana, and a birch, Betula fonlinalis. From the mines in the willow leaves 

 I was able to obtain only adult beetles, apparently on the point of emerging, and 

 certain parasites. From the poplar leaves I obtained several larvae, pupae and para- 

 sites. 



There seems to have been a decided increase in the severity of the attack since the 

 first observations were made and the colony seems to be growing very rapidly. 



Wyatt W. Jones 

 Salt Lake City, Utah 



On the extra instar of the Chinch bug. Subsequent to the appearance of my 

 paper entitled "Bionomics of the Chinch bug" Bui. 1016, I have learned that the 

 extra instar of this insect was previously discovered by Dr. Yuasa of the University 

 of 111. and was made note of in the Ent. News (Vol. 29, pp. 233-234, 1918). It is 

 needless to say had the writer known of Dr. Yuasa's discovery at the time the paper 

 was written that gentleman would have been given full credit. 



Philip Luginbill, 

 U. S. Bureau of Entomology, Washington, D. C. 



Destructive Bark-Beetles in the Monterey Pine Forests. During the last few years, 

 the Del IVIonte Properties Company which controls most of the pine forests in the 

 vicinity of Pebble Beach, Cahfornia, has been thinning out the grove. Unfortunately 

 most of the felled timber was allowed to remain in the forest, either as corded wood, 

 poles or trash, with the result that various species of bark beetles were able to develop 

 to an enormous extent. Last year the cutting stopped and in consequence the beetles 

 overlapped into the standing timber, causing a great deal of damage. The red tur- 

 pentine beetle, Dendroctonus valens Lee. was responsible for the death of a few of the 

 larger trees but most of the damage was done by Ips plastographiis Lee. and Ips 

 radiatae Hopk. with one of the species of Pityophothrus causing the death of a few of the 

 smaller trees. The company now has a large force of men at work cleaning up the 

 area so that future damage will no doubt be minimized. 



Edwin C. Van Dyke 



Zoological Record. Owing to the collapse of the International Catalogue of 

 Scientific Literature in connection with which the Record was published from 1906 

 to 1914, the Zoological Society of London has undertaken to bear the whole financial 

 responsibility for the preparation and printing of the Record. 



Owing to the great increase of the cost of printing and to the very meagre support 

 accorded to the Record by Zoologists and Zoological Institutes generally, the financial 

 burden of this undertaking on the Zoological Society is becoming very severe. The 

 cost of printing the Record now amounts to between £1500 and £2000 annually 

 and the Society receives back by Subscribers and sales less than 25% of this sum; 

 I fear therefore, unless Zoologists are prepared to make greater efforts to support 

 the undertaking there is a strong possibility that the Council of the Zoological 

 Society may refuse to find this large sum each year. 



It appears therefore to be the duty of every Zoologist to help so far as he is able to 

 support this most invaluable work. All particulars and forms of subscription can 

 be obtained from the Secretary of the Zoological Society, Regents Park, London, 

 N. W. 8. It may be mentioned that the price of the whole volume is now £2.10. 0. 

 and the price of the separate parts a proportional smaller sum; that of the portion 

 Insecta is 15/ — . 



V. S. Sclater 

 Editor Zoological Record 



