October, '11] PARKER: TERMES INJURING REDWOOD 423 



it, in some cases working from three inches to a foot up the pole in the 

 dry wood. Termites were also found in redwood fence posts and in 

 the redwood sills of a small building standing in the infested yard. 

 The termites were first noticed by the hop growers in April, 1908. 

 The yard in which they first appeared was overflowed by the American 

 river in January of the same year and w^hen the w^ater retreated, a 

 large amount of driftwood was left on the ground. Since the termites 

 were not seen before this time, it seems quite probable that they came 

 in with the logs and when the water retreated, established themselves 

 in the hop yard. 



The California redwood has heretofore been considered quite 

 immune to attack by the white ant. Dr. L. O. Howard in Bulletin 

 No. 30 of the Bureau of Entomology U. S. Department of Agriculture 

 under the title "On the Alleged Immunity of the California Redwood 

 to Attack by Termites" quotes from a letter received from Mr. J. E. 

 Norton of Manila. The experiments described in Mr. Norton's letter, 

 indicate that the California redwood is immune to attack by white 

 ants. Mention is made regarding the possible immunity of California 

 redwood in Circular No. 50 of the Bureau of Entomology by Mr. C. L. 

 Marlatt as follows: "Capt. Geo. P. Ahearn, U. S. Army, reports that 

 California redwood has been used for more than twenty-five years in 

 the Philippines, and has never been known to be injured by white 

 ants." The work of these insects upon the string pegs and trellis 

 poles in the hop yards near Sacramento, however, proves that, under 

 some circumstances at least, this wood is subject to attack by Termes 

 lucifugus. 



NOTES ON TWO IMPORTANT PARASITES OF ECONOMIC 



INSECTS 



By A. B. Gahan 



The following incomplete notes are taken from the records of the 

 Entomological Department of the Maryland Experiment Station, and 

 are submitted in the hope that they will prove of interest to economic 

 entomologists. 



Telenomus quaintancei Gir. 



This parasite in the eggs of the peach tree borer, Sanninoidea ezitiosa, 

 described by Girault in 1906 {Psyche XIII, p. 63), was reared by the 

 writer September 9, 1911, from eggs collected at College Park, Md. 

 Mr. E. N. Cory on August 21 brought to me a single female specimen 

 which he had observed crawling over a cluster of borer eggs on a peach 

 leaf. The mass of eggs was also secured and placed in a vial for 



