64 Psyche {April 
Paris have been severely damaged and whole tracts of the elms have 
been killed.? In England the elms of London Park and southern 
England have been severely injured.? We see from this that Scolytus 
multistréatus is very widely distributed in Europe, since, as Eichhoff 
states, it covers the entire central portion of that continent. 
This beetle was first found in the United States and recognized as 
Scolytus multistriatus Marsh in October, 1909, while extensive col- 
lections of Leopard Moth larvae were being made from limbs of elms 
and ash in the College yard, at Harvard. These limbs had to be barked 
and split for the purpose of securing the larvae of the Leopard Moth, 
and it was during this process that the multistriatus larvae were 
found. At that time the grubs were about full grown. No live adult 
beetles were found, but the mother of each brood was found dead in 
her chamber. A number of these females were extracted in a suffi- 
ciently perfect condition to make the identification of the species 
possible. This identification was kindly made for me by Dr. A. D. 
Hopkins of the Federal Bureau of Entomology. 
After the species was identified I was desirous of knowing to what 
extent the trees in the surrounding country were infested, and to 
ascertain if possible about how long the beetles have been in this 
country. Under ordinary conditions this would have been a difficult 
matter. But the city of Cambridge was at that time removing from 
the streets in different parts of the city a hundred or more elm trees 
which were either dead or in a dying condition. ‘These were all 
examined. he trunks and larger limbs of the majority of those that 
were taken out were yet alive. Different parts of the trees were care- 
fully inspected in order to ascertain where the beetles first made their 
attack. Observations clearly showed that it was invariably above 
the middle upper part of the trunk, and usually on the larger limbs. 
The beetles are quite aggressive and as many as two hundred mother 
beetles were found in a space less than two feet square on a living trunk. 
Larvae were also taken from the smaller green limbs of standing trees. 
Without exception every felled tree examined showed hundreds of 
beetle markings and larvae. A representative number of those 
standing were carefully examined and nearly every one showed “‘shot- 
holes” of the beetles. It is difficult to ascertain the extent of the in- 

1 Barbey, A. Les Scolytides de l’Europe Centrale H. Kiindig, Geneva, 1901. 
2 Gillanders, Forest Entomology, 1908. 
