358 KANSAS UNIVERSITY SCIENCE BULLETIN. 
ACKNOWLEDGMENTS. 
The writer is especially indebted to the authorities of the 
Yale University Museum for the loan of the Mazon Creek 
collections of Amphibia and for a grant of money for the 
making of the illustrations. Aid was also secured for the 
preparation of the work through a grant from the Elizabeth 
Thompson Science Fund. 
BIBLIOGRAPHY. 
The following bibliography of papers on the fauna and flora 
of Mazon Creek shales does not pretend to be complete, but I 
have listed there all that have come under my observation. 
1. BRADLEY, Frank H., 1870. Geology of Grundy County. Geol. Surv. 
of Illinois, IV, pp. 196-197. 
2. EASTMAN, C. R., 1902. The Carboniferous Fish-fauna of Mazon 
Creek, Illinois. Journal of Geology, X, pp. 535-541; 4 figures and 
a list of the vertebrates known at the time. 
3. HANpbLIRSCH, Anton, 1906. Revision of the American Paleozoic In- 
sects. Proc. U. S. National Museum, XXIX, pp. 661-820; 109 
figures; introduction by Charles Schuchert. 
Geological Position of the Principal Insect-bearing Localities of the 
American Paleozoic, by David White. 
4, , 1906-’08. Die fossilen Insecten und die Phylogenie der rezen- 
ten Formen. Leipzig, pp. 1-1361, pls. i-xlix. 
Be , 1911. New Paleozoic Insects from the Vicinity of Mazon 
Creek, Illinois. American Journal of Science, xxxi, pp. 297-377; 
text figures 1-63. 
6. Hay, O. P., 1900. Descriptions of Some Vertebrates of Carbonif- 
erous Age. Proc. Amer. Philos. Society, XX XIX, No. 161, 96-123. 
7. Cope, E. D., 1865. On Amphibamus grandiceps, a New Batrachian 
from the Coal Measures. Proc. Acad. Natl. Sci. Phila., pp. 134-137. 
, 1866. Supplement to the Description of Vertebrates. Geol. 
Surv. Illinois, II, pp. 185-141, pl. xxxii, and one text figure. 
9. LESQUEREUX, Leo, 1870. Paleontology of Illinois. Descriptions of 
Fossil Plants. Geol. Survey Illinois, IV, pp. 377-508, pls. v-xxxi. 
10. MeLANper, A. L., 1903. Some Additions to the Carboniferous Ter- 
restrial Arthropod Fauna of Illinois. Journal of Geology, Xi, 
pp. 178-198, pls. 5-7. Describes and figures new spiders and insects. 
11. Moopir, Roy L., 1908. The Dawn of Quadrupeds in North America. 
Pop. Sci. Monthly, LX XII, pp. 558-566. Figures new specimen of 
Amphibamus grandiceps. 
-, 1908. The Lateral Line System in Extinct Amphibia. Jour- 
nal of Morphology, XIX, pp. 511-540; 17 figures. Figures and 
describes evidences of lateral line system on Mazon Creek species 
of Amphibia. 
