REPORT OF THE STATE ENTOMOLOGIST 1901 745 



ruin a number of fine trees in that locality and necessi- 

 tate their removal. The work of this pest at Buffalo was 

 brought to my notice by Mr M. F. Adams of that city, and 

 through his kindness I have been able to secure good examples 

 of the insects' work in ash and to observe its operations 

 in oaks. This species also occurs on Long Island. All the 

 examples of its work seen by me show that the full grown cater- 

 pillars prefer to run their burrows at some depth in the wood, 

 and that as a rule they run so close to and communicate so 

 freely with one another as to destroy the value of infested trees 

 for timber. This insect also causes large unsightly wounds 

 wherever its burrows come near the surface. Caterpillars 

 about to pupate frequently take refuge in these channeled 

 wounds, from which the pupae work themselves partly out 

 before the disclosure of the imago. The eggs are probably 

 deposited in any available crevice, where they adhere to the bark 

 rather firmly. A piece of root which had been bored by the wil- 

 low curculio, Crypto rhynchus lapathi Linn., was 

 lying in a breeding cage, and a female Prionoxystus 

 embraced the opportunity to deposit six or seven eggs well 

 within the burrow. 



Apparently the females do not hesitate to oviposit before the 

 appearance of males. Some eggs which were found in the office 

 hatched, possibly without being fertilized, but it was impossible 

 to prove the latter point. Dissection of a well distended female 

 which probably had deposited no eggs, showed that she con- 

 tained 269 well formed ova and 133 which were partly developed, 

 making a total of 402. 



Leopard moth, Zeuzera pyrina Fabr. Late in January 

 a communication was received from C. H. Stuart, Newark N. Y., 

 accompanied by an imported quince seedling infested with the 

 larva of this notorious pest. It was stated in the letter that 

 all of the stock with which this stock came would be fumigated 

 before it was set out. This pest, as is well known, has proved 

 and is now a very serious enemy to shade trees in and about 

 New York city; and it is only a question of time when it will 

 become more widely distributed in the United States. It is one 



