330 The American Naturalist. [April, | 
is given in Bulletin No. 1, Geological Survey of Missouri, pp. 
60-85, by G. Hambach. 
The Occurrence of Goniolina in the Comanche Series of the 
Cretaceous is noted by R. T. Hill in the American Jere of 
Science (3), Vol. XL. pp. 64, 65. 
Jos. F. James discusses the Maquoketa Shales and their Correla- 
tion with the Cincinnati Group of Southwestern Ohio, in the 
American Geologist, Vol. V., pp. 335-356; and, On Variation, 
with Special Reference to Certain Paleozoic Genera, in AMERICAN 
NATURALIST, Vol. XXIII., pp. 1071-1087. 
T. Rupert Jones describes Some Paleozoic Ostracoda from North 
America, Wales, and Ireland, in Quarterly Journal Geological So- 
ciety of London, Vol. XLVI., pp. I-30; also in-the same jour- 
nal, pp. 534-556, Some Devonian and Silurian Ostracoda from 
North America, France, and the Bosphorus; and Some Fossil 
Estheriz, in the Geological Magazine, Vol. IX. , pp. 385-390. 
Charles R. Keyes has a Review of the Progress of American 
Invertebrate Paleontology for the Year 1889, in the AMERICAN 
Natorauist, Vol. XXIV., pp. 131-138; Certain Forms of Stra 
parollus from Southeastern Iowa, in American Geologist, Vol. Va 
PP. 193-197 ; Genesis of the Actinocrinidae, in AMERICAN NATUR- 
ALIST, Vol. XXIV., pp. 243-254; Generic Relations of Platyceras 
and Capulus, in the American Geologist, Vol. VI., pp. 6-9; Note 
on the Preservation of Color in Fossil Shells, in Zhe Nautilus, ; , 
Vol. IV., pp. 30-31 ; Synopsis of American Carbonic Calyptræidæ, 
in Proceedings of the Academy of Natural Sciences, Philadelphia, n 
1890, pp. 150-181; Discovery of Fossils in the Limestones a 
Frederick County, Maryland, in Johns Hopkins University Ce 7 
culars, No. 84, p. 32; and The Naticoid Genus Strophostylus, in 
the American NATURALIST, Vol. XXIV., pp. 1111-1117. a 
Remarks on the Nature of Organic Species are given by Wa 
Leidy in Transactions Wagner Free Institute of Science, Vol. Il. 
PP: 51-53. 
J. P. Lesley has issued Volumes II, and III. of his Dictionary 
of Fossils; P 4, Geological Survey of Pennsylvania. 
Joshua Lindai has prepared a General Index to the Fight Re 
i 
] 
