KXCHANOES. 



This column is intended only for wants and exchanges, not for 

 advertisements of goods for sale. Notices not exceed- 

 ing three lines frt^e »«» S'lbscrlborB. 



■«^ These notices are coulinued as long as our limited space will allow ; the new 

 ones are added at the end of the column, and only when necessary those at the top 

 (being longest in) are discontinued. 



Wanted — Hesperiidae from all parts of North America. Will 

 pay cash or exchange Iowa insects. A. W. Lindsey, 112 E. Bloom- 

 ington St., Iowa City, la. 



For Exchange — Duplicate Rhopalocera from Japan and Formosa; 

 Desiderata : butterflies of the world. S. Satake, No. 48 Aoyama- 

 minamimachi 5-chome, Akasakaku, Tokyo, Japan. 



Any Group or order of insects collected this summer for Bupre- 

 stidae and Longicorns from N. A. or for exotic Buprestidae. De- 

 sire to get in touch with interested parties. Alan Nicolay, 416a 

 Grand Avenue, Brooklyn, N. Y. 



WANTED — Papers p'ublished since 1894 and containing refer- 

 ences to American Coleoptera, by Bernhauer, Grouvelle, Lesne, 

 Leveille, Lewis, Pic, Otto Scliwarz, Wasmann or other foreign 

 authors. Will pay cash or give in exchange papers by American 

 authors that I have in duplicate. — C. W. Leng, 33 Murray St., 

 New York City. 



RECENT ENTOMOLOGICAL LITERATURE FOR SALE 



The American Entomological Society, 1900 Race St., Phila., Pa., U. S. A. 



Check title desired and send this notice with remittance. A 

 discount of 10 per cent, will be allowed if remittance is made within 

 30 days of date below. Those having a credit of deposit will bt 

 given a discount of 20 per cent. Orders totalling less than 10 cents 

 will not be filled. 



Please make payments on U. S., or Canadian, Post Offices, or Banks. Amounts 

 under Ji.oo accepted in U. S. Postage. Currency at sender's risk. 



JUNE 1, 1917. 

 ARACHNIDA. 

 2050. — Banks (N.). — New mites, mostly economic [9 n. sps.]. 



(Ent. News, 28, 193-199, 2 pis., '17) 12 



COLEOPTERA. 

 20.54. — Blaisdell (F. E.). — Studies in the Tenebrionid tribe Ele- 



odiini, Xo. 2. [fi new]. (Ent. News, 28, 221-227, '17) .12 



DIPTERA. 



2052. — Metcalf (C. L.). — Two new Syrphidae from eastern 



North America. (Ent. News, 28, 209-212, 1 pi., '17).. .10 



HYMENOPTERA. 

 2051.— Cockerell (T. D. A.).— New bees from Costa Rica. [2 



new]. (Ent. News, 28, 200-201, '17) 10 



LEPIDOPTERA. 



762.— Braun (A. F.). — Nepticulidae of North America [l n. g. ; 



8 n. sps.]. (Trans. 43, 155-209, 4 pis., '17) .62 



2053. — Skinner (H.). — T.ycaena lygdamus and its races, with a 

 description of a new one. (Ent. News, 28, 212-214, 

 '17) 10 



ODONATA. 



763. — Williamson (E. B). — The genus Neoneura. [6 new.] 



(Trans. 43, 211-246. 11 pis., '17) 7;; 



