74 



PSYCHE. 



[June iSSS. 



Psyche, A Journal of Entomology. 



RATES OF SUBSCRIPTION, ETC. 



PAYABLE IN ADVANCE. 



y;^- Subscriptions ftot discontinued are considered 

 renewed, 



^^®~ Commencing with the numero for January 

 1883 the rate of subscription is as follows: — 



Yearly subscription entitling the subscriber to 

 one regular copy and, if he desires it, one copy 

 printed on one side of thin paper (for pasting 

 the titles of the bibliographical record on title- 

 slips), postpaid, $2^ 



Subscription to volumes {\ZZ2,-\%()o), as above, 

 postpaid, $S 



The index will only be sent to subscribers to the 

 whole volume. 



Twenty-five extra copies, zvithout change of 

 form, to the author of any leading article, if or- 

 dered at the time of sending copy, . . Free. 



Author's extras over twenty-five in number, 

 under above mentioned conditions, each, . 2C 



Separates, with changes of form — actual cost o 

 such changes in addition to above rates. 



■ Scientific publications desired in exchange. 



ADVERTISING RATES, ETC. 

 Terms Cash— strictly in advance. 

 •Only thoroughly respectable aUvertisements 

 will be allowed in PSYCHE and the advertising pages 

 will be numbered consecutively with those of reading 

 matter. The editors reserve the right to reject 

 advertisements. 



Subscribers to PSYCHE can advertise insects fo 

 exchange or desired for study, not for cash, free a^ 

 the discretion of the editors. 



Regular style of advertisements plain, at the follow- 

 ing rates : — 



Outside Inside 

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Each subsequent insertion one-half the above rates. 

 Address EDITORS OF PSYCHE, 



Cambridge, Mass., U.S.A. 

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 R. Friedlander & SOHN, 



Carlstrasse 11, Berlin, N.W. 



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INDEX TO ENTOMOLOGICAL 

 LITER A TURE. 



Having accumulated an immense stock of refer- 

 ences to the literature of entomology, I will furnisVi 

 references on special subjects at ten cents each 

 reference, or fifty cents per decade. For further 

 particulars see PSYCHE for Oct. -Dec. 1884, v. 4, 

 p. 223. 



B: PicKMAN Mann, 



Washington, D. C. 



LIBRARY OF THE CAMBRIDGE ENTO- 

 MOLOGICAL CLUB. 



The librarian of the Cambridge Entomologica 

 (jlub calls attention to the desirability of preserving 

 in the library of the Club as complete a series of 

 entomological publications as it is possible to collect. 

 It is especially desirable to preserve the transient 

 literature of the suVjject — separates, small pamphlets 

 and newspaper articles — and the librarian will be 

 pleased to receive single copies of the daily papers, 

 scientific journals, magazines, or agricultural papers, 

 which contain entomological articles. These papers 

 are preserved and catalogd, and, because they are 

 overlooked by large general libraries, are just the 

 kind of material that should be preserved in a special 

 entomological library. Any one who has sought for 

 some of the best of the agricultural journals of the 

 western states in libraries will appreciate any effort 

 made to preserve journals of this sort. 



Separates which are often thrown into the waste- 

 basket, as useless, as too small for preservation, as 

 duplications of parts of serials, or as valueless, are 

 respectfully solicited. The friends of the Club are 

 also asked to send a copy of newspapers in which 

 they have published articles or notes on entomologi- 

 cal subjects. If these notes are anonymous, the 

 author's name will be acceptible information. 



The accessions to the library of the Club had 

 reached the number of 1643 at the end of last year 

 (1887). 



Direct all papers for the library to 



Cambridge Entomological Club, 



Cambridge, Mass. 



