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CARPENTER (Prof. G. H.). Injurious insects and other animals observed in 
Ireland during the years 1916, 1917, and 1918. 
[Econ. Proc. Roy. Dub. Soc., Vol. II, Dublin, 1920.] 
The Author. 
Carter (Henry F.), Incram (A.), and Macrim (J. W.S.). Observations on 
the Ceratopogonine Midges of the Gold Coast, with Descriptions 
of New Species, I-IT. 
[Ann. Trop. Med. and Parasit., Liverpool, Vol. XIV, 1920. ] 
——-— [See Back tock (B.).] 
Casry (T. L.). Memoirs on the Coleoptera, Vol. IX, 1920. The Author. 
Cassipy (T. P.). [See Coan (B. BR.).] 
CaTALoGus CoLEopTERORUM, Junk (W.) editus a Schenkling (S.). 
Pars. 70, 71, 72, 73. 
LEPIDOPTERORUM, Junk (W.) editus a Wagner (H.). 
Pars. 23, 24, 25. Purchased. 
CHAMBERLAIN (Ralph V.). South American Arachnida, chiefly from the 
Guano Islands of Peru. 
[Brooklyn Museum Science Bull., Vol. III, Brooklyn, 1920. ] 
CuamMPrain (A. B.). [See Bovine (Adam G.).] 
CHITTENDEN (F.H.). Harlequin Cabbage Bug (Jlurgantia histrionica) and 
its control. 
LU. 8S. Dept. Agric., Farmers’ Bull. 1,061, Washington, 1920. ] 
and Martory (A. C.). The Bean Lady-bird, Epilachna corrupta. 
[U. 8. Dept. Agric., Bull. 843, Washington, 1920. | 
Coap (B. R.) and Cassipy (T. P.). Cotton Boll Weevil. Control by the use 
of Poison. 
LU. 8. Dept. Agric., Bull. 875, Washington, 1920. | 
CockrEreELt (T. D. A.). Descriptions of New Bees collected by Mr. H. H. 
Smith in Brazil. Il. 
[Proc. Ac. Nat. Sci., Philadelphia, 1901. ] 
—— —— The Biologist’s Problem. 
[ Pop. Science Monthly, Colorado, 1914. | 
—— Some Carpenter Bees (Hym.). 
[Entomological News, Vol. XX VII, Philadelphia, 1916. ] 
——-— The Panurgine Bees of the Genera Hesperapis, Zacesta, and 
Panurgomia. 
[Psyche, Vol. XXIII, New York, 1916. ] 
—— — Some American Fossil Insects. 
[Proc. U. 8. Nat. Mus., No. 2,146, Vol. LI, Washington, 1916. ] 
—— The Fauna of Boulder County, Colorado. IV. 
[University of Colorado Studies, Vol. XII, Boulder, 1917.] 
Some Euglossine Bees. 
[Canad. Ent., Ontario, 1917. ] 
New Social Bees. 
[Psyche, Vol. XXIV, New York, 1917. ] 
A Tipulid Fly from Baltic Amber. 
[Canad. Ent., p. 115, Ottawa, 1918. ] 
——-— The Philippine Bees of the Family Vomadinae. 
[Phil. Journ. Sci., Manila, Vol. XIV, 1919.] 
The Metallic-coloured Halictine Bees of the Philippine Islands. 
[Phil. Journ. Sci., Manila, Vol. XV, 1919.] 
———— Natal Bees. 
[Ann. Durban Mus., Durban, Vol. II, 1919.] 
———— The Love of Nature. 
[Nat. Hist. Colorado, Vol. XIX, 1919. ] 
———— A Policy for the U. 8S. National Museum. 
[Scientific Monthly, Colorado, 1919-20. ] 
