eeTOe 
Dr. M. W. Blackman, of the New York State College of Forestry, 
at Syracuse University, has joined the staff of the Bureau for a year, 
beginning October 1, and during the coming winter will work in Wash- 
ington on the classification of scolytid beetles. 
Dr. C. J. Drake, head of the Department of Zoology and Entomology 
of Iowa State College, spent some time at the Museum on October 30 and 
31 examining certain Hemiptera and discussing various problems with the 
Bureau workers there. 
LIBRARY 
Mabel Colcord, Librarian 
NEW BOOKS 
Alfonsus, Alois. 
Allgemeines Lehrbuch der Bienenzucht. 2 Aufl. Neu bearbeitet 
von Oswald Muck ... 626 p., illus., Wien und Leipzig, Moritz 
Perles, 1929. 
AUP. Vite US ah Osa OG. 
Lepidopterorum catalogus, pt. 34-36. Berlin, W. Junk, 1929. 
Contents: 34. Dalla Torre, K. W. von, and Strand, Emprik geo 
ralidae. 211 p., July, 1929. 35. Bryk, Felix. Papilionigague 
(Lamproptera, Cressida, Euryades, Troides.) 55 p., June 3, 1929. 
35. Neustetter, H. Nymphalidae: Subfam. Heliconiinae. 136 p., 
wuly jee, 1929: 
Blunck, H., Bremer, H., and Kaufmann, 0. 
; Untersuchungen zur Lebensgeschichte und Bekampfung der 
Riibenfliege (Pegomyia hyoscyami Pz.). Beitrag zur Epidemiologie 
der Ribenfliegenkalamitat, von H. Bremer. Arbeiten aus der Bio- 
logischen Reichsanstalt fiir Land~ und Forstwirtschaft, Berlin-~ 
Dahlem, Bd. 17, Hft. 2., p. 103-195, illus., May, I92o se 
z2ichnis der angefiihrten Literatur, p. 187-193.) 
Brohmer, P., Ehrmann, P., and Ulmer, G. 
Die Tierwelt Mitteleuropas, Bd. 3, Lfg. 3. Leipzig, Quelle & 
Meyer (19297). Contents: III. Spinnentiere. 5. Ordaung: Milben, 
Acari, von Hermann Vitzthum. “112 op loailiuss siceoes 
Buchner, Paul. 
Holznahrung und Symbiose ... 64 p., illus. Berlin, Springer 
1928. 
Calamida, Dante. 
L'ape. xv, 140 p., illus. Torino &c., G. B. Paravia & Covjpoeee 
(On cover: Biblioteca Agricola.) ("Sunto bibliografico": p. xii.) 

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