BIBLIOGRAPHY OF THt: U. S. NATIONAL MUSEUM, 1891. 755 



CiiARLKS V. Riley. lusccticides ;iud means of applying them to shade and I'oiest 

 trees. 



Fifth Report of the U. S. Entomological Commission (Washington), 1890, pp. 31-47. 



The first part gives a summary of the insecticides available for the protection of forest and 

 shade trees from the attaclis of leaf-eating insect.s. The arsenical poisons, kerosene emulsions, 

 and hydrocyanic acid gas are especially treated of. The second part eiuimerates and describes 

 the apparatus for the application of insecticides in dry or liquid form, and more especially in 

 various nozzles or pumps for spraying, many of which are figured. 

 CiiAKLES V. Riley. Insects iujnrions to the Haekherry. 



Fifth Report of the U. <S'. Entomological Commission (Washington), 1890, j)]). 601-t)22. 



Descriiitiou and natural history of the more important insect enemies of Celtis occidentalis 

 in North America, and enumeration of many other species found on this tree. The following 

 species are more fully treated : Apatura celtis, A. clyton, Orapta interrogationis, Lihythea back- 

 manni, Acronycta rubricoma, Oraphisurus triangulifer, Alaus liiisciosus, Scolytus fagi, Ceci- 

 domyiidous Haekherry galls, and Hackberry rhj-llid.e (genus Pachyprylla) . A number (six) of 

 hitherto undescribed Cecidomyiidous galls: 1'. celtidisvesicxihiin, P. celtidis-astericus, P. celti- 

 dis-tunbilicus, P. celtidis-pubescens, P. ccltidis-globulus, P. celtidiscucurbita, and P. celtidis- 

 cucurhita var. A synoptic table of the Pachyprylla galls is given, as well as a table of the 

 groups of the imagos of this genus. 

 Charles V. Riley. Notes on the Larva of Platypsyllus. 



Proceedings of the Entomological Society of Washington, n, No. 1, May, 1891, pp. 37. 28. 



Additional characters of the ultimate larva of Platypsyllus not mentioned in a previous 

 ■paper {Entomologica Am,ericana. Februarj', 1890), viz., the arrangement of the ventral seta?, 

 the rudimentary setse and the presence of stigmata. Reasons why this larva can not be re- 

 ferred to the Mallophaga, but the presence of ocelli is a very anomalous character. 

 Charles V. Riley. On the difficulty of dealing with Lachnostema. 



Proceedings of the Entomological Society of Washington, ll, No. 1, May, 1891, pp. 58-60. 



Account of the failure to i)rotect by available means (spraying with a strong whale-oil and 

 tobacco soap solution, application of London purple, attracting the beetles by light), certain 

 freshly transplanted trees in the author's garden from the nocturnal attacks oi Lachnosternas. 

 The nature of the injury l)y the beetles consists almost exclusively in gnawing ott'the petioles 

 and not in devouring the leaves. The principal practical conclusion drawn from thi.s experi- 

 ence is that the injury can be averted if the ground beneath or near the trees be kept free from 

 the Lachnostema larv*. 

 Charles V. Riley. A viviitarons Cockroach. 



Proceedings of the Entomological Society of Washington, n. No. 1, May, 1891, pp. 129, 130. 



Exhibition of and remarks on a siiecimen of Panchlora viridis which had given birth to the 

 young viviparously. Remarks on the characteristics of the young larvte and on the anoma- 

 lous nature of viviparity in the BloAtidce. 

 Charles V. Riley. Additional remarlvs on Platypi-iyUii.s castoris. 



Proceedings of the Entomological Society of Washington, n. No. 1, May, 1891, pp. 130, 131. 



Failure to find the pupa and additional si)ecimens of the ultimate larva of the beaver para- 

 site, and enumeration of other insects found in beaver dens. 

 Charles V. Riley. Remarks on an aquatic insect larva from Ceylon. 



Proceedings of the Entomological Society of Washington, n. No. 1, May, 1891, p. i;il. 



A shortly characterized but not determined larva found in the monutaiu streams of Ceylon, 

 and exhibited by Mr. C. J. Gahan before the London EntouR)logical Society, October 1. 1890, 

 must be referred to the Dipterous family Blepharoceridm. Mention that the earlier stages of 

 two North American species of thi.s family are known. 

 Charles Y. Riley. Remarks on the larva of Citheronia aepulchraUs. 



Proceedings of the Entomological Society of Washington, u, No. 1, May, 1891, jip. 131, 132. 



Identification, distribution, and food plants of Citheronia sepulchralin, called fortli by an 

 article by Mrs. Julia P. Ballard, in Entomological News, October, 1890, entitled " What can 

 it be?" 

 Charles V. Riley. On the time of transformation in the genus i)i Laclmostcrna. 



Proceedings of the Entomological Society of Washington, II, No. 1, May, 1891, pp. 132-134. 



Prof. Forbes' statement that all Lachnostema larva) cliauge to pupa and imago in sununer 

 and fall must be modified, and while this mode of transformation normally takes place in 

 those species which appear early in the season, evidence is brought forth to prove that in the 

 late-appearing sjjecies transformation takes place in the spring of the same year in which the 

 imagoes appear. 

 Charles V. Riley. The outlook for economic entoinidogy. 

 Indiana Farmer, July 5 and 12, 1890. 



A condensed account of the progress in American economic entomology during the past 



