16 BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 



48. WALSH, B. D. The Dew potato-bug and its natural history. <Pract. 



Ent., 30 October, 1865, v. 1, pp. 1-4. 



Record of the spread east-wards of Doryphora W-lineata ; description of the 

 egg ; food-plants, enemies, and means against the same ; comparative char- 

 acters of D.juncta and D. 10-lineata; species of Meloidw injurious to the 

 potato. 



49. [ WALSH, B.D.] The joint- worm. <Pract. Ent, 27 November, 1865, 



v. 1, pp. 11, 12. 



Reasons for disbelieving that the joint-worm is the larva of one of the Chal- 

 cididas. 



50. WALSH, B. D. On phytophagic varieties and phytophagic species, 



with remarks on the unity of coloration in insects. <Proc. 

 Ent. Soc. Phil., November-December, 1865, v. 5, pp. 194-216, 

 fig. See : <Amer. Journ. Sci., September, 1865, ser. 2, v. 40, 

 pp. 282-284. <Ann. and Mag. Nat. Hist., November, 1865, 

 ser. 3, v. 16, pp. 383, 384. 



Argues for the origin of races and species by phytophagic isolation ; refers to 

 Datanaministra,D. contracta, Halisidota tessellaris, H. antiphola [= H. tessel- 

 laris], H. harrisii [= H. tessellaris], Arhopalus [= Cylldne] pictus, A. [= C.] 

 robinice, A. infaustus [= C. decorus"], Callidium antennatum, C. janthinum, 

 Conotrachelus nenuphar, Doryphora W-lineata, and D. junctaj unity of color- 

 ation explained by assumption of a genetic connection between various 

 species ; figure showing bullae on wing of Ichneumon. 



51. W[ALSHJ,B.D. [Cicada years.] <Pract. Ent., 25 December, 1865, 



v. 1, pp. 18-19. 



Answer to inquiry of M. S. Hill; Cicada districts of the United States, 

 as given by Fitch in N. Y. Rept. I, p. 39 ; habits of C. [_= Tibicen] septen- 

 decim. 



52. WALSH, B. D. Insects injurious to vegetation in Illinois. <Trans. 



111. State Agric. Soc., 1865, v. 5, pp. 469-483, figs. 

 Notes on injurious insects in Illinois in 1861; life-history and ravages of 

 Leucania unipuncta. 



53. WALSH, B. D. The " Thrips " of the vine-growers. What is it ? 



<Pract. Ent., 25 December, 1865, v. 1, pp. 20-21. 



The Thrips of fruit-growers probably not a true Thrips; food-habits of 

 Thrips. 



54. WALSH, B. D. The grub- worm. <Colman's Eural World, Decem- 



ber, 1865. S.-b., No. 1, p. 51. 



Habits, ravages, and means against Lachnosterna quercina [=/ca] ; its larva 

 compared with that of Ligyrus relictus ; vernacular names of the Lach- 

 nosterna and of Allorhina nitida. 



55. WALSH, B. D. Borers. <Pract. Ent., 29 January, 1866, v. 1, pp. 



25-31, figs. 1-8. 



Remarks on the name "borer;" figures, natural history, and means against 

 Saperda bivittata [= Candida'], Chrysobothris ftmorata, Bostrichus [=Amphi- 

 cerus] bicaudatw, JSgeria [= Sannina] exitiosa, A. tipuliformis, Clytus [= CyV- 

 Zewe] robiniw, C. [=C.] pictus, aiid Cerattphorus [= CAtow] cinctus; need of 

 State aid against injurious insects. 



