118 1910. Entomol. Litteraturblätter Jahrgang X. No. 6. 
Boletin de laSociedadEspañoladeHistoriaNatural. 
Tomo 10, Nims. 2-3 c. 2 laminas. Madrid, Febrero- 
Marzo 1910. 
Entomologischer Inhalt: Mercet, R. G., Especies europeas 
del gén. Ancistromma (c. 2 fig). Pg. 125—130. 
Preis des Jahrganges: 10 Mark. 
Journal of the New York Entomological Society, 
ed. by W. M. Wheeler. Vol. 18, No. 1 w. 3 plates. 
New York, March 1910. 
Inhalt: Brues, Ch. T., Some Notes on the geological History 
of the parasitic Hymenoptera (w. 5 fig.). Pg. 1. — DelaTorre 
Bueno, J. R., Westchester Heteroptera. Il. Additions, Corrections 
and new Records. Pg. 22. — Barber, H. G., Some Mexican Hemi- 
ptera-Heteroptera new to the Fauna of the United States. Pg. 34. 
— Olsen, Ch. E., Notes on breeding Hemiptera. Pg. 39. — 
Frost, C. A, A new Species of Chrysobothris from Maine. 
Pe. 43. — Fall, H. C., On Chrysobothris californica and Allies 
(w. 1 fig.). Pg. 45. — Osburn, R. C., Studies on Syrphidae. 
I—III: Syrphus arcuatus Fallén and a related new Species (w. 
pl. 1). Invalidity of Scaeva (Catabomba) as a Genus (w. pl. 2). 
An interesting meristic Variation in Syrphus perplexus (w. pl. 3). 
Pg. 58. — Proceedings. Pg. 66—70. 
Preis des Bandes (4 Hefte): 12 Mark. 
Journal of Economic Entomology, Organ of the As- 
sociation of Economic Entomologists, ed. by E. P. Felt. 
Vol. 3, No. 2 w. 11 plates. Concord, N. H., April 1910. 
Inhalt: Sanderson, E. D., Relation of Temperature to the 
Growth of Insects (w. 21 fig). Pg. 113. — Cotton, E. C, 
A Constant Low Temperature Apparatus for biological Investigations 
(w. pl. 6—8 and 1 fig). Pg. 140. — Hitchings, E. F., The 
unprecedented Appearance of the Saddled-Prominent (Heterocampa 
guttivitta). Pg. 146. — Headlee, Th. J., Notes on the Corn 
Ear-Worm (w. 4 fig.) Pg. 149. — Parrott, P. J., The Cherry 
Ermine Moth (Hyponomeuta padella L.). Pg. 157. — Washburn, 
F. L., Further Observations on Empoasca mali — Notes on Papai- 
pema nitela and P. cataphracta. Pg. 162. — O’Kane, W. C,, 
Work on the Apple Maggot. Pg. 169. — Felt, E. P., Spraying 
R. Friedlander & Sohn, Berlin N.W., Karlstr. 11. 
