30 
BIBLIOGKAPIIY OF ECONOMIC ENTOMOLOGY. 
196. [Walsh, B. D.J Notices. <Pract. Ent., December, 1866, v. 2, 
p. 35. 
Mention of several agricultural journals. 
197. Walsh, B. D. On the insects, coleopterous, hymenopterous, and 
dipterous, inhabiting the galls of certain species of willow. 
Part 2d and last. <Proc. Ent. Soc. Phil., December, 1866- 
January, 1867, v. 6, pp. 223-288. 
See No. 46 for Part 1st. Supplementary notes on tlie Cecidomyidce (gall-makers 
and guest-flies); criticism of statements of Fitch and Harris; discussion of 
structure and habits of Tenthredinidce and insects generally; synopsis of 
tenthredinidous willow-galls; descriptions of the galls, their makers and 
inquilines; for the new species described, see the Systematic Index ; remarks 
on species and varieties; figures fore-wings of Tenthredo and Ichneumon. 
198. W[alsh], B. D. Plant-lice—their friends and enemies. <Pract. 
Ent., January, 1867, v. 2, pp. 37-44, figs. 
Method of work and mode of reproduction of Aphididce ; their relations to 
ants ; plant-lice enemies ; figures Aphis mali and several enemies of plant- 
lice ; means against Aphididce. 
199. W[alsh], B. D. Birds versus insects. <Pract. Ent., January, 
1867, v. 2, pp. 44-47. 
Insectivorous birds not necessarily beneficial; a bird must be shown to eat 
at least thirty (30) times as many injurious insects as it does beneficial ones 
before it can be considered useful. 
200. [Walsh, B. D.] [Insects named.] <Pract. Ent., January, 1867, 
v. 2, p. 47. 
Answer to inquiry of J. Pettit; identification of many species, mostly beetles; 
characters and food-habits of Clerus nigripes [= 4 -guttatus'] ; habitat of Lep- 
tura capitaia and Tingis [=Corythuca ] ciliata. 
201. [Walsh, B. D.] [Apple-tree insects.] <Pract. Ent., January, 
1867, v. 2, p. 47. 
Answer to inquiry of M. Hobart; increasing distribution of Aspidiotus conchi- 
formis [= Mytilaspispomorum ] ; enemies of the same; characters of the eggs 
of Aphis mali. 
202. [Walsh, B. D.] [Work in entomology.] <Pract. Ent., January, 
1867, v. 2, p. 47. 
Answer to G. Scarborough; advice for the study of entomology by beginners. 
203. W[alsh], B. D. The true Thrips and the bogus Thrips. <Pract. 
Ent., February, 1867, v. 2, pp. 49-52, figs. 
Natural history, characters, habits, and figures of Thrips sp. ; characters of 
the larva and imago of Haltica chalybea ; figure of imago ; habits of species 
of Erythroneura [= Typhlocyba ] ; description and figures of E. [—T.] vitis. 
204. W[alsh], B. D. Universal remedies. <Pract. Ent., 1867, v. 2, 
p. 52. 
Exposure of proposed universal remedy against fruit-tree insects. 
205. W[alsh], B. D. Poisoning noxious insects. <Pract, Ent., Feb¬ 
ruary, 1867, v. 2, pp. 52-53. 
Sugaring with poison as a means against Noctuidce. 
