BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 67 
53P. [Walsh, B. D., anil C. V. Riley.] Bag worms. <Amer. Ent., 
February, 1809, v. 1, p. 120. 
Answer to inquiry of W. W. Butterfield; means against Thyridopteryx ephe 
merceformis. 
539. [Walsh, B. I)., and C. V. Riley.] Eggs of tlie apple-tree plant- 
louse. <Amer. Ent., February, 1869, v. 1, p. 120. 
Answer to inquiry of M. W. Seaman ; effect of frosts upon the eggs and larvie 
of Aphis mali. 
510. [Walsh, B. D., and 0. Y. Riley.] Insects named. <AmerEnt., 
February, 1869, v. 1, p. 120. 
Answer to inquiry of J. B. Merwin ; identification of insects sent; characters 
of Vanessa antiopa and Cynthia [= Pyrameis~\ atalanta. 
541. [Walsh, B. D., and 0. Y. Riley.] White grubs. <4mer. Ent., 
February, 1869, v. 1, p. 120. 
Answer to inquiry of W. C. Holmes; undetermined white-grub injuring 
grass and osage orange. 
542. [Walsh, B. D., and C. Y. Riley.] The polyphemus moth, Atta- 
cus polyphemus , Linn. <Auier. Ent., March, 1869, v. 1, pp. 
121-122, fig. 95. 
Attacus [= Telea~\ polyphemus , A. cynthia, and Bombyx {=Sericaria'] mori as 
silk-producers; food-plants, description of larva, habits, and seasons of A. 
[= 1. ] polyphemus ; figure of the imago; ravages of A. fecropia ; antennm 
mistaken for wings ; mention of Lcpidoptera having fissured wings. 
543. [Walsh, B. D., and 0. Y. Riley.J Wasps and their habits. 
<Amer. Ent., March, 1869, v. 1, pp. 122-143, figs. 96-112. 
Structure, classification, and habits of North American predatory Hymenop- 
tera; comparative characters of the digger and true wasps ; figure to show 
the folding of the wing in true wasps; habits and figures of imagos of 
Chlorion cceruleum, Bembex fasciaia, Sphex ichneumonea, Ammophila pictipen- 
nis, Pepsis formosa, Stizus grandis [=Sphecius speciosus'], S. [=$.] speci- 
08218 , Pelopoeus lunatus [ =ccmentarius ~\, Agenia bombycina, Trypoxylon albi- 
tarse, Ceropales rufiventris, Eumenes fraternus, Vespa m'aculata, and Polistes 
rubiginosus', figure of imago of Cryptus [=Linoceras'] junceus and of several 
nests of wasps. (See No. 375.) 
544. [Walsh, B. D., and C. Y. Riley.] Do toads eat worker bees? 
<Amer. Ent., March, 1869, v. 1, p. 144. 
Reprint and review of article by C. Dadant, and of comments of editors of 
American Bee Journal; usefulness of toads. 
545. [Walsh, B. D., and C. Y. Riley.] Best’s invigorator once again. 
<Amer. Ent., March, 1869, v. 1, p. 145. 
Condemnation of B. Best’s patent fruit tree and vine invigorator. 
546. [Walsh, B. D., and C. Y. Riley.] On our table. <Amer. Ent., 
March, 1869, v. 1, p. 146. 
i Notices of Nos. 1 and 2 of Le Naturaliste Canadien. 
547. [Walsii, B. D., and C. Y. Riley.] Sugar-tree borer. <Amer. 
Ent., March, 1869, v. 1, p. 146. 
Answer to inquiry of E. Simms; characters and means against Arhopalus 
l—Plagioitotus'] speciosus . 
