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attacked by worms. Walking among the trees a few days ago I made 
an examination of the cloths and found them all webbed in every crease 
and fold with hibernating Codling-moth larv?e, hundreds of them, not- 
withstanding the scarcity of the apple crop. These will be destroyed 
before spring, and it seems to me that, after all, such methods of trap- 
ping are preferable to spraying in small private fruit gardens. The 
advocacy of the long disused hay or paper bands for the early broods 
of the worms should be renewed. Or, judging from my recent observa- 
tion, a wad of old rags or sacking in the forks of the trees would 
perhaps be as efficacious as the band and somewhat less troublesome 
to arrange. 
A NEW SPIDER PARASITE. 
By William H. Ashmead. 
The very interesting contributions of Mr. L. O. Howard toward a 
knowledge of the Hymeuopterous parasites of North American Spiders, 
published in Insect Life, induce me to publish here the description 
of a new external parasite on a spider, discovered the past summer by 
Mr. Trevor Kincaid, of Olympia, Wash. 
This species is of more than ordinary interest from the fact that three 
specimens were sent, while still in the larval state, attached externally 
to the spider, two of which transformed to imagos virtually under my 
eyes, and I am therefore able to describe the different stages. 
My friend, Dr. George Marx, our highest authority on the Arachnida, 
has kindly determined the spider on which the parasite lives as Tetrag- 
nathus sp., it being in too shriveled a condition to be determined spe- 
cifically. 
The larva of the parasite, which is elongate-fusiform in shape, nar- 
rowest toward the head, and of a greenish- white color, lies extended 
longitudinally along the abdomen of the spider, the head being inserted 
close to the base of the cephalothorax, or where the abdomen is attached 
to the body. All the specimens received invariably occupied this posi- 
tion, and when they attain full growth almost completely cover the 
abdomen, the latter being visible only along the lateral margins. 
This longitudinal position of the larva may be assumed for protective 
reasons, as in this condition it is less noticeable, appearing to be a part 
of the spider, or resembling a longitudinal white band, often observed 
in various spiders. 
On reaching maturity the parasite leaves the spider and forms a 
web, loosely constructed, in the meshes of which it weaves a very 
characteristic cocoon, within which it passes its final stage to the 
imago. This cocoon is quite distinct from all other Ichneumonid or 
Pimplid cocoons known to me, and more nearly resembles those made 
