246 



PSYCHE. 



[April 1S92. 



Jessamine Co., Ky., frequent. 



19. On the leaves of Fagus ferru- 

 ginea. An Erineum which grows on 

 the upper side of the leaf where it fol- 

 lows the veins, forming bands or elon- 

 gated patches of a brown color. When 

 young, apparently of a whitish color. 

 When abundant, causing the leaf to turn 

 brown so that the position of growths 

 can be recognized by examining the 

 under side. Sometimes forming a close 

 velvety covering on the upper surface. 

 Never, as far as examined, very dark in 

 color. Sometimes associated with the 

 next, of which it may be a variety. 

 Hairs capitate. 



Temple, N. H., (from Prof. A. B. 

 Seymour) ; Ft. Mackinac, Mich., (from 

 Prof. Wm. Trelease). 



20. On the leaves of Fagus ferru- 

 ginea. An Erineum forming very dark 

 brown patches on the under side of the 

 leaf, between the veins. Patches vary- 

 ing in shape and extent, frequently elon- 

 gated, sometimes forming a continuous 

 band between veins. Color of all the 

 specimens seen dark brown, but prob- 

 ably lighter when young. When occur- 

 ring on the same leaf as the preceding, 



Notes. — The Massachusetts legislature 

 has granted another $75,000 to stamp out 

 the gypsy moth. 



The attention of entomologists should be 

 drawn to an interesting paper by Mr. L. O. 

 Howard on the biology of the Chalcididae 

 which appears in the current Proceedings of 

 the U. S. national museum. A mass of details 

 concerning insect-parasitism is there brought 

 together in a highly instructive manner 

 which merits at least the perusal of every 



and so presumably of the same age, 

 always the darker in color. Hairs cap- 

 itate, with rather long stalks, not notice- 

 ably different from hairs on the upper 

 surface of a leaf received from Prof. 

 Trelease, but with longer stalks than 

 those from the upper side of leaves from 

 Temple, N. H. 



The growth is extremely common in 

 western Kentucky, where most of the 

 leaves of a tree may often be seen bear- 

 ing it. 



Western Kentucky; Ft. Mackinac, 

 Mich., and Wood's Holl, Mass.. (from 

 Prof. Wm. Trelease). 



Explanation of Plate 6. 



Fig. 1 . Leaf of Nyssa multijlora, 

 showing cecidii described as No. r ; 

 a, section of cecidium. 



Fig. 2. Leaf of Nyssa multiflora, 

 showing cecidii described as No. 2 ; 

 a, section of folded leaf margin. 



Fig. 3. Tuft of hairs from leaf of 

 Potentilla canadensis. 



Fig. 4. Capitate hairs from Erineum 

 on under side of leaves of Betula popu- 

 lifolia . 



Fig. 5. Capitate hairs from No. 19. 



person engaged in any field work ; problems 

 requiring solution are suggested by the 

 wholesale, and clews are given to others 

 which are well worth following. The bio- 

 logical side of entomology is in no danger of 

 suffocation at the national capital with such 

 men as Riley, Howard, and Schwarz at the 

 front. 



In the last number of Psyche, fig. 3 on p. 

 237, showing the antenna of Goniops en- 

 larged, is accidentally printed upside down. 



