10. 
iT. 
12. 
CONTENTS 
Assot, C. G. Periods related to 273 months or 22} years. 17 pp., 
7 figs. Sept. 13, 1956. (Publ. 4265.) 
DeicNAan, H. G. The Asiatic species of birds of the genus 
Criniger (Pycnonotidae). 9 pp. Oct. 25, 1956. (Publ. 4266.) 
Cooper, G. ArTHUR. Loop development of the Pennsylvanian 
terebratulid Cryptacanthia. 18 pp., 2 pls., 12 figs. Jan. 31, 
1957. (Publ. 4267.) 
TourtELot, Harry A. The geology and vertebrate paleontology 
of upper Eocene strata in the northeastern part of the Wind 
River Basin, Wyoming. Part 1. Geology. 27 pp., 1 pl., 7 figs. 
Mar. 27, 1957. (Publ. 4269.) 
SAUNDERS, JoHN B. Trochamminidae and certain Lituolidae 
(Foraminifera) from the Recent brackish-water sediments of 
Trinidad, British West Indies. 16 pp., 4 pls. Mar. 15, 1957. 
(Publ. 4270.) 
GREGOIRE, CHARLES. Studies by phase-contrast microscopy on 
distribution of patterns of hemolymph coagulation in insects. 
35 pp., I pl., 4 figs. May 8, 1957. (Publ. 4271.) 
Ewers, Joun C. Early white influence upon Plains Indian 
painting. George Catlin and Carl Bodmer among the Mandan, 
1832-34. I1 pp., 12 pls. Apr. 24, 1957. (Publ. 4292.) 
Gazin, C. Lewis. A skull of the Bridger middle Eocene creo- 
dont, Patriofelis ulta Leidy. 20 pp., 4 pls. Apr. 30, 1957. 
(Publ. 4293.) 
Wetmore, ALEXANDER. The birds of Isla Coiba, Panama. 105 
pp., 4 pls., 15 figs. July 8, 1957. (Publ. 4295.) 
Roru, Lours M., and Wittis, Epwin R. The medical and vet- 
erinary importance of cockroaches. 147 pp., 7 pls. Dec. 19, 
1957. (Publ. 4299.) 
“Levine, Harvey R. Anatomy and taxonomy of the mature 
naiads of the dragonfly genus Plathemis (family Libellulidae). 
28 pp., 25 figs. Sept. 25, 1957. (Publ. 4301.) 
Coorer, G. ArTHUR. Permian brachiopods from central Oregon. 
79 pp., 12 pls., 2 figs. Dec. 9, 1957. (Publ. 4302.) 
(v) 
