INSECTS OF THE MOUNTAIN ASH. 537 
Order Hymenoptera. 
41. Crepidodera helxines (Linn.). Eating leaves of Crataegus coccinea 
(Townsend, MS. notes). 
42. Selandria cerasi Peck. Observed on the thorn late in summer at 
Brunswick, Me. 
Order Hemiptera. 
43. Aphis cratcegifolii Fitch. On leaves of G. punctata. (Fitch.) 
44. Siphonophora cratwgi Monell. July, St. Louis. CMonell.) 
45. Schizoneura cratwgi (Estlund. 
Class Arachnida; order Acarina. 
46. Acarus f cratwgi-vermiculus Walsh MS. Occurs abundantly both on 
Crataegus tomentosa and crus-galli. (Proc. Ent. 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 archippus on wild plum. (Scudder.) 
3. Basilarchia astyanax on wild plum. (Scudder.) 
4. Aphis mali Fabr. 
INSECTS INJURIOUS TO THE MOUNTAIN ASH. 
Pyrus americana. 
AFFECTING THE LEAVES. 
1. The scurfy bark louse. 
Chionaspis furfurus (Fitch). 
The following account is copied from Professor Comstock's Keport 
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 
