BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 67 



53*. [WALSH, B. D., and C. V. RILEY.] Bag worms. <Ainer. Ent, 

 February, 1869, v. 1, p. 120. 



Answer to inquiry of W. W. Butterfield; means against Thyridopteryx ephe 

 merceformis. 



539. [WALSH, B. D., and C. V. RILEY.] Eggs of the apple-tree plant- 



louse. <Araer. Ent,, February, 1869, v. 1, p. 120. 

 Answer to inquiry of M. W. Seaman ; effect of frosts upon the eggs and larvae 

 of Aphis mali, 



540. [WALSH, B. D., and C. V. RILEY.] Insects named. <AinerEnt., 



February, 1869, v. 1, p. 120. 



Answer to inquiry of J. B. Merwin; identification of insects sent ; characters 

 of Vanessa antiopa and Cynthia [=Pyroit] atalanta. 



541. [WALSH, B. D., and C. V. RILEY.] White grubs. <Amer. 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. V. RILEY.] The polyphemus moth, Atta- 



cus polyphemus, r Linn. <Amer. Ent., March, 1869, v. 1, pp. 

 121-122, fig. 95. 



Attaois [= Te/eo] polyphemus, A. cynthia, and Bombyx [=ericana] mori as 

 silk-producers; food-plants, description of larva, habits, and seasons of A. 

 [=l'.']l)olyphemu8; figure of the imago ; ravages of A. cecropia; antennae 

 mistaken for wings ; mention of Lepidoptera having fissured wings. 



543. [WALSH, B. D., and C. V. RILEY.] Wasps and their habits. 



<Amer. Ent., March, 1869, v. 1, pp. 122-143, figs. 96-112. 



Structure, classification, and habits of North American predatory Hyinenop- 

 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 ccerulenm, Bembex fasciala, Sphex ichneumonea, Ammophila pictipen- 

 nis, Pepsis formosa, Stizus grandis [=Sphecius speciosus'], S. [=.] speci- 

 O8U8, Pelopceus lunatus \_^ cementarlus~\, Agenia bombycina, Trypoxylon albi- 

 tarse, Ceropales rufiventris, Eumenes frat^rnu.8, Veapa maculata, and PoJistes 

 rubiginosus: figure of imago of Cryptus [Linoceras]junceus and of several 

 nests of vrasps. (See No. 375.) 



544. [WALSH, B. D., and C. V. RILEY.] Do toads eat worker bees? 



<Amer. Ent., March, 1869, v. 1, p. 144. 



Reprint and review of article by C. Dad ant, and of comments of editors of 

 American Bee Journal ; usefulness of toads. 



545. [WALSH, B. D., and C. V. RILEY.] Best's invigorator once again. 



<Amer. Ent., Marcb, 1869, v. 1, p. 145. 

 Condemnation of B. Best's patent fruit tree and vine invigorator. 



546. [WALSH, B. D., and C. V. RILEY.] On our table. <Amer. Ent., 



March, 1869, v. 1, p. 146. 

 Notices of Nos. 1 and 2 of Le Naturaliste Canadien. 



547. [WALSH, B. D., and C. V. RILEY.] Sugar- tree borer. <Amer. 



Ent,, March, 1869, v. 1, p. 146. 



Answer to inquiry of E. Simms; characters and means against Arhopalus 

 speviosus. 



