IV MONTHLY PROCEEDINGS. 



of desperata. It may be found to occupy a position intermediate 

 between retecta and desperata. Whetber tbis is a true species, or will 

 prove to be only a variety, Prof. Freucb, I bave little doubt, will 

 some day determine for us. I here append Prof. Freneb's descri})- 

 tion of idalame, which I rejjard the best I bave read. The specimen 

 he describes seems to differ in one particular from the one he so 

 kindly gave me, in having the subreniform open ; the description is 

 as follows : 



C ulaluine Strk.— Forewiugs pale bluish gray, transverse lines and shade 

 quite prominent along the costa, rather indistinct elsewhere, very little brown 

 along the transverse lines, subreniform open, a pale space outside the t. a. line 

 reaching across the discal cell ; t. a. and t. p. lines the usual distance apart. 

 Expanse 2.75 mm. 



Mr. Aaron spoke of the variations produced in some butterflies by 

 the icing process, exhibiting drawings in illustration. The following 

 were experimented upon and the effects of various degrees of tem- 

 perature recorded, Terias lisa and niclpp)e, Eudamus tityrus, with 

 some others. 



February 28, 1889. 

 Director Dr. Horn in the chair. 



The following additions to the Library of the American Entomo- 

 logical Society were announced : 



Entoraologica Americana, vol. v. No. 2, From the Editors. 



Canadian Entomologist, vol. xxi. No. 2. From the Editor. 



Proceedings of the Boston Society of Natural History, conclusion 

 of vol. xxiii. From the Society. 



Fifth Bulletin of the Nebraska Experiment Station — Bruner, on 

 Injurious Insects. From the Station. 



Entomologist's Monthly Magazine, February, 1889, From the 

 Conductors. 



Journal and Proceedings of the Royal Society of New South 

 Wales, vol. xxii, pt. 1. From the Society. 



Transactions and Proceedings of the Royal Society of South Aus- 

 tralia, vol. X. From the Society. 



Com|)te-rendu Societe Entomologique de Belgique, ser. iii, Nos 

 105-107. From the Society. 



Le Naturaliste, ser. ii, No. 31. From the Editor. 



Horse Societatis Entomologic^e Rossica;, vol. xxii. From the So- 

 ciety. 



