922 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
INSECTS INJURIOUS TO THE SEQUOIA GIGANTEA. 
1. a u)i op* fittunguii Leoonto. 
" Three specimens from Big Trees, California." (Leconte's Rhyncho- 
phora.) 
2. A LONGICORN BORER. 
While at the Big Trees of the Mariposa Grove, we observed that one 
of them had been mined under the bark by what may have been a 
lougicorn borer, as the mine was broad and shallow, being about 4 mm 
broad and about four inches long. 
3. The sequoia ^egerian. 
Bembecia sequoia' Hy. Edwards. 
Order Lepidoptera; family .£gekiad.£. 
Very destructive to Sequoia semper vir ens, as well as to Pinus ponderosa 
and P. lambertiana. H. Edwards. (Papilio, Vol. I, p. 181.) 
"Bembecia sequoia? Hy. Edw. is devastating the pine forests of Men- 
docino County, California, and is particularly destructive to Sequoia 
semper vi reus, Pinus ponderosa, and Pinus lambertiana. The eggs appear 
to be laid in the axils of the branches, the young caterpillar boring in a 
tortuous manner about its retreat, thus diverting the flow of the sap, 
and causing large resinous nodules to form at the place of its workings. 
These gradually harden, the branch beyond them dies, and the tree at 
last succumbs to its iusignificant enemies. Hundreds of fine trees in 
the forests of the region indicated are to be seen in various stages of 
decay. A similar habit seems to prevail in the life-history of Sciapteron 
pini Kellicott, a species described by its author in the Canadian Ento- 
mologist, 1881." (H. Edwards in Bull. U. S. Eut. Comm., No. 7, Appen- 
dix.) 
