9 Insecta. 
Titles. 
3500 
Ainslie, G. G. The cornpith weevil 
{Centrinus penicellus Hbst.) J. econ. 
Ent. Concord 13 1920 (271-280). 
{ Coleoptera .] 22 
Aldrich, J. M. European frit fly in 
North America. J. Agric. Res. Washing- 
ton 18 1920 (451-474) pi. lvii. [Di- 
ptera.] 23 
Alexander, C. P. Undescribed 
crane-flies in the Paris Museum. 
African species of the subfamily 
Limnobiinae. Bull. Mus. Paris 1920 
1920 (41-46). [Diptera.] 24 
Alexander, C. P. Undoscribed 
crane-flies in the Paris Museum. 
African species of the subfamily 
Tipulinae. Bull. Mus. Paris 1920 1920 
<134-137). [Diptera.] 25 
Alexander, C. P. Undescribed 
crane-flies in the Paris Museum. 
African species part 2. * Bull. Mus. 
Paris 1920 1920 (216-219, 316-318, 
402-406, 509-511). [Diptera.] 20 
Alexander, C. P. Undescribed 
Tipulidae from western North America. 
Proc. California Ac. San Francisco 10 
1920 (35-46). [Diptera.] 27 
Alexander, C. P. The crane-flies 
collected by the Swedish expedition 
(1895-1896) to Southern Chile and 
Tiorra dol Fuogo. (Tipulidae, Diptera.) 
Ark. Zool. Stockholm 13 No. 6 1920 
(1-32) 2 pis. 28 
Alexander, C. P. A new genus and 
species of net-winged midge (Blepharo- 
ceridae) and an undescribed species of 
Tanyderidae {Diptera). Ark. Zool. 
Stockholm 13 No. 7 1920 (1-7) 2 figs. 29 
Alexander, C. P. Now or littlo- 
known Tipulidae {Diptera). i. Ethio- 
pian species. Ann. Nat. Hist. London 
5 1920 (53-62). 30 
Alexander, C. P. New or little- 
known Tipulidae {Diptera). ii. Ethio- 
pian species. Ann. Nat. Hist. London 
5 (337-351). 31 
Alexander, C. P. New or little- 
known Tipulidae. iii. Ethiopian 
sp ecios. Ann. Nat. Hist. London 5 
1920 (465-472). [Diptera.) 32 
Alexander, C. P. Undescribed species 
of African crane-flies in the collection 
of the British Museum (Natural his- 
tory) ; Tipulidae, Diptera. ' Part i, 
subfamily Limnobiinae. Ann. Nat. 
Hist. London 8 1920 (1-44, 336-364). 
33 
Alexander, C. P. An undoscribed 
species of Ptychoptera from West Africa. 
Entomologist London 53 1920 (101). 
[Diptera.] 34 
Alexander, C. P. An undescribed 
species of Clytocosmus Skeese. Proc. 
Linn. Soc. N.S. Wales Sydney 45 1920 
(183). [Diptera.) 35 
Alexander, C. P. New or little- 
known crane-flies in the Queensland 
Museum. Mem. Queensland Mus. 
Brisbane 7 1920 (52-63) [Diptera.] 36 
Alexander, C. P. Tipulidae Collected 
by the American Museum Congo 
expedition. Bull. Amer. Mus. New 
York 43 1920 Art. ii (9-20) pi. iv. 
[Diptera.] 37 
Alexander, C. P. New or little- 
known crane-flies from Japan. Trans. 
Amer. ent. Soc. Philadelphia 46 1920 
(1-26). [Diptera.] 38 
Alexander, C. P. The crane-flies of 
New York. Part II. Biology and 
Phylogeny. Memoir 38 Cornell Univ. 
Agric. Exper. Station Ithaca 1920 
(695-1133) pis. xi-xcvii. [Diptera.] 39 
Alexander, C. P. Scientific results of 
the Katmai expedition of the national 
geographic Society. The crane-flies 
(Tipulidae, Diptera). Ohio J. Sci. 
Columbus 20 1920 (193-203). 40 
Alexander, C. P. New or little- 
known crane-flies from Formosa (Tipu- 
lidae, Diptera). Ann. Ent. Soc. Amer. 
Columbus 13 1920 (249-270). 41 
Alexander, C. P. A new subfamily 
of Tanyderid flies {Diptera). Ann. 
Ent. Soc. Amer. Columbus Ohio 13 
1920 (402-405) pi. xxxii. 42 
Alexander, C. P. An undescribed 
species of Ptychoptera from the western 
United States. Ent. News Philadelphia 
31 1920 (3). [Diptera.] 43 
Alexander, C. P. Undescribed 
Tipulidae collected by Mr. H. S. 
Parish in Brazil. Ent. News Philadel- 
phia 31 1920 (70-75). [Diptera.] 44 
Alexander, C. P. Undescribed 
crane-flies from Argentina (Tipulidao, 
Diptera). Ent. News Philadelphia 31 
1920 (215-221). 45 
