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Cat. No. 15 for 1906 free. 



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COLEOPTERA 



Revision of the Ptinidae of Boreal America, by H. C. Fall. 200 pp., i pi 



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HYIVLENOPTERA 



Notes on Some Bees in the British Museum, by T. D. A. Cockerel!. 



56 pp. (Trans., 1905) .50 



Synopsis of Euceridje, Etnphorida; and Anthophoridae, by Charles Rob- 

 ertson. 8 pp. (Trans , 1905) IO 



Descriptions of new species of Neotropical Hvmenoptera ; Descriptions 

 of four new species of Odynerus from Mexico, by P. Cameron 19 

 pp. (Trans., 1905) 12O 



APTERA 



A Revision of the Mouth-parts of the Corrodentia and the Mallophaga, 



by R. E. Snodgrass. n pp., i pi. (Trans 1905) .!<) 



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