LIST OF PUBLICATIONS. 
WALCOTT, CHaArtEs D. Cambrian 
geology and paleontology, IV, No. 6. 
Middle Cambrian Spongiae. 
Smithsonian Mise. Coll., 
vol. 67, no. 6, 1920, 
pp. 261-364, pls. 60- 
90, text figs. 1-10. 
WALKER, Bryant. A_ new fresh- 
water mollusk from Indiana. 
Proc. U. 8S. Nat. Mus., 
vol. 57, no. 23821, 
Sept. 9, 1920, p. 525, 
1 fig. 
WAYNE, ArtHuR T. The russet- 
backed thrush (Hylocichla ustulata 
ustulata) taken near Charleston, 
8. C. 
Auk, vol. 37, no. 3, 
July, 1920, pp. 465, 
466. 
WEATHERBY, C. A. Varieties of 
Pityrogramnia triangularis. 
Rhodora, vol. 22, no. 
259, July, 1920, pp. 
113-120. 
WELD, L. H. American gallflies of 
the family Cynipidae producing sub- 
terranean galls on oak. 
Proc. U. S. Nat. Mus., 
vol. 59, no. 2368, 
June 27; 1921, pp: 
187—246, pls. 28-37. 
WETMORE, ALEXANDER. 
Montana. 
The knot in 
Auk, vol. 3%, no. 3, 
July, 1920, p. 451. 
O 
219 
WETMORE, ALEXANDER. 
claw in swifts. 
Condor, vol. 22, no. 6, 
Dec. 4, 1920, pp. 197— 
199. 
Five new species of birds 
from cave deposits in Porto Rico. 
Proc. Biol. Soc. Washe 
ington, vol. 33, Det. 
30, 1920, pp. 77-81, 
@ piss 253° 
WILSON, CHarLES B. The copepod 
parasites (in “ Lake Maxinkuckee, a 
physical and biological survey ’’). 
Dept. of Conservation, 
State of Ind., pub. 
no; 7%; vol. 2; 1920; 
pp. 79-82. 
New species and a new genus 
of parasitic copepods. 
The wing 
Proc. U. S. Nat. Mus., 
vol. 59, no. 2354, 
June 10, 1921, pp. 
1-17, pls. 1-7. 
YOKOGAWA, SADAMU. 
tode from the rat. 
Journ. Parasitol., vol. 
(no, 3h, (‘Oct.,. 19205 
pp. 29-33, pls. 6, 7, 
figs. 1-4. 
YUNCKER, T. G. Revision of the 
North American and West Indian 
species of Cuscuta. 
Univ. Ill, Biol. Monogr., 
vol.. 6; (nos: 225 “3; 
Mar. 1, 1921, 
1-14, pls. 1-13. 
A new nema- 
pp- 
