INSECTS OF THE MOUNTAIN ASH. 537 



Order Hymenoptera. 



41. Crepidodera helxines (Liuu.). Eating leaves of Cratcegiis coccinea 



(Townsend, MS. notes). 



42. Selandria cerasi Peck. Observed on the thorn late in summer at 



Brunswick, Me. 



Order Hemiptera. 



43. Aphis cratcegifolii Fitcli. On leaves of G. punctata, (Fitcli.) 

 41. Siphonophora cratwgi Monell. July, St. Louis. fMonell.) 



45. Schizoneura cratcegi CEstluud. 



Class Arachnida; order Acarina. 



46. Acarusf cratcegi-vermiculus Walsb MS. Occurs abundantly both on 



Gratoegus tomentosa and crus-galli. (Proc. Eut. Soc. Phil., vi, p. 



227.) 



INSECTS INJURIOUS TO THE CRAB-APPLE, 



Pyrus coronaria Linn. 



AFFECTING THE LEAVES. 

 1. Catocala grynea (Cramer). 



The caterpillar of this moth has been found by Mr. Koebele to feed 



on the crab apple. 



Larva. — General color silvery gray with a reddish cast. Eyes marked at summit 

 with a luuule of yellowish white, and this lined behind with rust-red extending 

 nearly to the mouth. Body more reddish towards the head. There is a very promi- 

 nent protuberance of a rust red color at the summit of the twelfth segment. The 

 red is very pronounced at the summit of the legs on the ninth and tenth segments. 

 (Koebele, Bull. Brooklyn Ent. Soc, iv, p. 22.) 



2. Basilarchia archippiis on wild plum. (Scudder.) 



3. Basilarchia astyanax on wild plum. (Scudder.) 



4. Aphis mail Fabr. 



INSECTS INJURIOUS TO THE MOUNTAIN ASH. 

 Pyrus americana. 



AFFECTING THE LEAVES. 



I. The scurfy hark louse. 

 Chionaspis furfur us (Fitch). 



The following account is copied from Professor Comstock's Report 

 for 1880, p. 315 : 



Harris described it on apple and pear in Massachusetts ; Dr. Fitch 

 found it on pear and choke cherry in New York ; Walsh observed it on 



