32 PAPERS ON INSECTS AFFECTING VEGETABLES. 
former, an ichneumonid, was reared in September from material 
received from Auburn. Ala.; the latter, a braconid, issued during the 
latter days of July from larvae received from Charleston, S. C. 
November 12, 1908, Prof. R. I. Smith, West Raleigh, X. C, stated 
that in attempting to rear larvae of this species several were killed by 
mites, which bred in great numbers in a single night. Samples of 
the mites were forwarded to this office, for identification by Mr. 
Nathan Banks, who reported as follows : 
The mite is Tyroglyphus americanus Bks., a species common in the Eastern 
States and feeding on a great variety of substances. These mites have a mi- 
gratory stage which is attached to many insects, and so they gain access to 
places where one would not suspect them. 
THE IMPORTED CABBAGE WEBWORM IN HAWAII. 
In Hawaii the larva? of the imported cabbage webworm (Hellula 
undalis Fab.) were observed by the junior author 1 attacking cab- 
bage, radish, kohl-rabi, and " Japanese turnips," at Honolulu and 
Wahiawa, on the island of Oahu. The investigation was confined to 
this island, and it was not determined if the species occurs as a pest 
on the other islands of the Hawaiian group. 
On Oahu cabbage and a few other cruciferous crops are produced 
to a limited extent throughout the year, for consumption in the local 
market. Of these crops cabbage is probably the most valuable, 
although ' ; Japanese turnips " are grown and used quite extensively 
by the Orientals. These turnips resemble what we in the States call 
" winter radish," but, unlike radishes, they are cooked before being- 
eaten. 
Most of the cabbage is grown during the cooler months, from 
November until April. According to the oriental gardeners, the 
other months of the year are " too hot/' and the plants seemingly do 
not thrive. Ordinarily only a few acres are grown annually, and 
the production is so limited that it becomes necessary to import con- 
siderable quantities of this vegetable from the mainland to supply 
the demand at - Honolulu and other towns. Cabbage grown during 
the cooler months is usually of good quality and is said to be a profit- 
able crop. Under the circumstances it doubtless seems odd to one 
unacquainted with the conditions that this crop is not produced in 
sufficient quantities to supply the local demand. The failure to grow 
cabbage more extensively is due in part to the fact that this crop is 
preyed upon by a horde of insects. Although most of these pests 
can be easily controlled, the Chinese and Japanese gardeners are. 
1 The notes on the occurrence of the imported cabbage webworm in Hawaii were made 
by the junior author while engaged as assistant Territorial entomologist and as a collabo- 
rator of the Bureau of Entomology. Thanks are due Mr. E. M. Ehrhorn for the courtesy 
of allowing Mr. Marsh to retain these notes. The junior author is not responsible for 
any statements made in other portions of this paper. — f. h. c. 
