BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 73 



605. [WALSH, B. D., and C. Y. EILEY.] Bugs in alcohol. <Amer. 



Ent., May, 1869, v. 1, p. 187, 

 Answer to inquiry of D. P. Smith ; alcohol as a means of preserving insects. 



606. [WALSH, B. D., and C. V. EILEY.] Borer in plum-twig. < Ainer. 



Ent., May, 1869, v. 1, p. 187. 



Answer to inquiry of W. Colwell; Elaphidion parallelum \_='villo8u-ni] bred 

 from plum-twigs; it does not prune the twig. See No. 559. 



607. [WALSH, B. D., and C. V. EILEY.] Eggs of cut- worm moth. 



<Amer. Ent., May, 1869. v. 1, p. 188, fig. 131. 



Answer to inquiries of G. Pauls, T. A. Thorp, and E. S. Foster; characters 

 and figure of eggs of Agrotis inermis [=sa?<cia] ; characters, and habits of 

 the larva. 



608. [WALSH, B. D., and C. V. EILEY.] Snow fleas. <Amer. Eiit., 



May, 1869, v. 1, p. 188. 



Answer to inquiry of H. H. G. Bradt; habits and food of Podura [= Ach- 

 orutes~\ nivicola. 



609. [WALSH, B. D., and C. V. EILEY.] Fuzzy galls on blackberry- 



twigs. <Amer. Ent., May, 1869, v. 1, p. 188. 



Answer to inquiry of J. Huggins; characters of Diaslrophus cwcutceformia 

 and its gall. 



610. [WALSH, B. D., and C. V. EILEY.] Pithy galls on blackberry- 



twigs. <Amer. Ent., May, 1869, v. 1, p. 188. 



Answer to inquiry of T. W. Gordon ; characters of the gall made by Diastro- 

 phus nebulosus. 



611. [WALSH, B. D., and C. V. EILEY.] Moth eggs. <Amer. Ent., 



May, 1869, v. 1, p. 188. 



Answer to inquiries of A. M. Shute and of J. Huggins ; characters f the eggs 

 of an undetermined moth. 



612. [WALSH, B. D., and C. V". EILET.] Horse-hair snakes. <Amer. 



Ent., May, 1869, v. 1, p. 188. 

 Answer to inquiry of A. M. Abbott ; characters and habitats of Gordiaccea. 



613. [ WALSH, B. D., and C. V. EILEY.] Imitative butterflies. < Amer. 



Ent.. June, 1869, v. 1, pp. 189-193, figs. 132-134. 



Immunity of Danaidce from and liability of Pieridce to the attacks of preda- 

 tory animals; mimicry of Danaidce by Pieridce and of Danais arcliippus by 

 Limenitis disippus ; hibernating habits and description of the larva of the 

 latter, with figures of its larva, chrysalis, imago, and hibernaculum ; figure 

 of Danais archippus; theory of the origin of mimicry. 



614. [WALSH, B. D., and C. V. EILEY.] Cabbage-worms upon gilly- 



flowers. <Amer. Ent., June. 1869, v. 1, p. 199. 



Habits and food-plants, seasons, and synonyms of Plutella cruciferarum. 



615. [WALSH, B. D., and C. V. EILEY.] "Wasps and their habits." 



<Amer. Eat., June, 1869, v. 1, p. 200. 



Comments on letter of S. S. Rathvon; species haviug essentially diffe rent 

 habits though externally indistinguishable should bo considered specific- 

 ally distinct. 



616. [WALSH, B. D., and C. V. EILEY.] The social wasps. <Amer. 



Ent., June, 1869, v. 1, p. 201. 

 Comments on paper by D. A. A. Nichols; habits of Vespa crabro. 



