CONTENTS. 



PAGE. 



HeU-PRIN, Angelo. a new species of Catfish (Ictalurus), .... 9 



RoMiNGER, C. Description of a new form of Bryozoa, 11 



RoMiNGER, C. Description of primordial fossil from Mount Stephens, N. W. 



Territory of Canada, 1- 



Leidy, Jos., M. D. Notice of some parasitic worms 20 



Ryder, John A. On a tumor in the oyster, 25 



McCooK, Rev. Henry C. Modification of habits in Ants through fear of enemies, 27 



FiELDE, Adele M. Notes on the geology of China 30 



FiELDE, Auele M. Chinese Rhizopods, . 81 



White, Charles A. On new generic forms of Cretaceous Mollusca and their 



relation to other forms, ........... 32 



Leidy, Jos., M. D. Parasite of a Bat, ,. .38 



KoENiG, Geo. A., Ph. D. On a peculiar form of Molyi)denite, .... 38 

 White, Charles A. On the Cretaceous formations of Texas and their relation 



to those of other portions of North America, 39 



KoENiG, George A., Ph. D. On Zinc-Manganese Asbestos, .... 47 



Heilprin, Angelo. Grampus Rissoanus on the American Coast, ... 49 



Wilson, Edmund B. Origin of the Excretory system ol the Earth-worm, . . 49 

 Meyer, Otto. Ph. D. On Invertebrates from the Eocene of Mississippi and 



Alabama, . ........... .51 



Ryder, John A. On the first and second sets of hair germs developed in the skin 



of foetal cats, ............ 50 



Alien, Harrison, M. D. A Prodrome ot a memoir on animal locomotion, . 60 



Porter, Thos. C. A List of the Carices of Pennsylvania, ..... 68 



Wachsmuth, Charles, and Frank Springer. The Summit Plates in Blastoids, 



Crinoids, and Cyslids and their Morphological Relations. .... 82 



FiELDE, Adele M. Note on the Multiplication of Distoma, ..... 115 



Ryder, John A. The Placentation of the Two-toed Ant eater, Cycloturus 



didactylus, .115 



Meehan, Thos. Sugar in China; Floral Calendars; Cortical peculiarites in the 



Plum, 120 



