418 i Scientific Serials. - [June. 
SCIENTIFIC SERIALS. 
AMERICAN JOURNAL OF SCIENCE AND Arts, May.—Descriptions 
of new genera and species of Isopoda, from New England, by 
O. Harger. Notice of new fossil reptiles, by O. C. Marsh. 
BULLETIN OF HaypeEn’s U.S. GEOLOGICAL SURVEY OF THE TER- 
RITORIES. ,1V, No. 2. May 3.—The geographical distribution of | 
the mammalia, considered in relation to the principal ontological 
regions of the earth, and the laws that govern the distribution of 
animal life, by Joel Asaph Allen. Description of new extinct 
vertebrata from the Upper Tertiary and Dakota formations, by 
E. D. Cope. Notes on a collection of fishes from the Rio Grande, 
at Brownsville, Texas, by David S. Jordan, M.D. A catalogue of 
the fishes of the fresh waters of North America, by David S. 
Jordan, M.D. Description of a Fossil Passerine Bird, from the 
insect-bearing Shales of Colorado, by J. A. Allen. (Plate L) 
The Coleoptera of the Alpine Regions of the Rocky Mountain, 
- by John L. LeConte, M.D. On the Orthoptera, collected by Dr. 
Elliott Coues, U.S. A., in Dakota and Montana, during 1873-74, 
by Prof. Cyrus Thomas. On the Hemiptera collected by Dr. 
Elliott Coues, U. S. A., in Dakota and Montana, during 1873-74, 
by P. R. Uhler. On the Lepidoptera, collected by Dr. Elliott 
Coues, U.S. A. in Montana, during 1874, by W. H. Edwards. 
An account of some insects of unusual interest from the Tertiary 
rocks of Colorado and Wyoming, by S. H. Scudder. 
Tue Geotocicat Macazine. April—The age of the world as 
viewed by the geologist and the mathematician, by T. M. Reade.. 
Geological time, by C. L. Morgan. What must be explained 
before the preservation of deposits under till is explained? by J. 
Young. Note on Peneus sharpii, by H. Woodward. 
QUARTERLY JouRNAL OF Microscopicat Scrence.—April. On 
the phenomena accompanying. the maturation and impregnation 
of the ovum, by F. M. Balfour (with an important résumé o 
latest discoveries). Notes on the structure and development of 
osseous tissue, by E. A. Schafer. On the endothelium of the body- 
cavity and blood-vessels of the common earth-worm, as demon- 
strated by silver staining, by D'Arc Power. Experimental 
contribution to the etiology of infectious diseases, with specia 
reference to the doctrine of Contagium vivum, by E. Klein. On 
the nature of fermentation, by’J. Lister. 
ZEITSCHRIFT FUR WHISSENSCHAFTLICHE ZooLoGiE.— March 7. 
F. E. Schulze continues his researches on the structure and devel- 
opment of sponges (family Ap/ysinide). The development of 
feathers, by T. Studer. Fertilization of the egg of Petromyson 
DSN a 
planeri, by E. Calberla. On the formation of the egg and the _ 
amles of Bonellia viridis, by F. Vejdoosky. ; aq 
