— I 5 4 — 



cusses flacherie in the cabbage-worm, Pieris rapie, describing the disease 

 minute!}', its characteristic bacteria, the evidence of its contagious nature 

 and of the ability of conveying it by an artificial culture of the Micro- 

 coccus. In the same pains-taking manner, jaundice, found associated 

 with flacherie in the silk-worm, by Prof. Burrill, is also discussed. Fla- 

 cherie in Da/ana angusii is described, with its characteristic bacteria, their 

 artificial cultures, and contagious nature. The paper concludes with a 

 notice of the aid rendered by muscardine in arresting wide-spread deso- 

 lation in forests and orchards, in Southern Illinois, in 18S3. caused bv 

 a remarkable prevalence of the forest tent caterpillar, Clisiocampa 

 sylvalica. 



The Insects of Betnla in North America, by Anna Katherina Dim- 

 mock, cf Cambridge, Mass., contained in Psyche, iv, pp. 239 — 243, 

 271 — 286, is an admirable compilation, and may justly serve as a model 

 for similar lists. It is not a simple record of the 107 species, noticed as 

 feeding on Belula, but valuable notes are given upon each insect— of 

 development, habits, history, etc., the other plants upon which it is 

 known to feed, with references to authority and publication. Where the 

 bibliography is so extensive and of such importance as to justify it, an 

 entire page, of small type, is devoted to a single species. It is to be 

 hoped that this is but the first of a series of similar publications by the 

 author. 



A published abstract of a paper read by Mr. Amos W. Butler, before 

 the American Association for the Advancement of Science at its last 

 meeting, on The Periodical Cicada in Southeastern Indiana, gives the time 

 and duration of its visitation, the mode of oviposition, abundance of the 

 var. cassini Fisher, in a distinct territory, the sounds produced, preva- 

 lence of a fungus attack, their destructions by mammals, birds ami 

 fishes, and the comparatively slight damage resulting from the visitation. 

 The paper affords evidence of well-trained habits of observation in the 

 author.* 



Dr. Hagen has communicated an interesting observation made by 

 him of the destruction of living trees, of the red maple, Acer rubrum, 

 by white ants, in Cambridge, Mass. (Canad. Ent., xvii, p. 134). 



Mr. Frederick Clarkson has found, that under some circumstances 

 at least, the development of the oak-pruner. Elaphidion villosum, is differ 

 ent form that ascribed to it by Drs. Harris and Fitch, in that the insect 

 may mature within its burrow as early as in the month of November 

 (Id., p. 188). 



* The paper has been published in full, during the present month, in Dull. N< 

 of the U. S. Dept. of Agriculture, — -Division of Entomology, pp. 24 to 31. 



