CONTENTS. 
No. 1.— Reports on the Dredging Operations off the West Coast of Central 
America to the Galapagos, etc., by the U. S. Fish Commission Steamer 
“ Albatross.” II. General Sketch of the Expedition of the “ Albatross,” 
from February to May, 1891. By A. Acassiz. (22 Plates.) February, 
1892 ; 
No. 2. — Contributions from the Zoological Laboratory. XXXI. The Meso- 
derm in Teleosts: especially its Share in the Formation of the Pectoral Fin. 
By E. R. Boyer. (8 Plates.) April, 1892 . 
No. 3. — Contributions from the Zodlogical Laboratory. XXXII. On Necto- 
nema agile, Verrill. By H. B. Warp. (8 Plates.) June, 1892 
No. 4. — Studies from the Newport Marine Laboratory. XXIX. Preliminary 
Note on some Modifications of the Chromatophores of Fishes and Crusta- 
ceans. By A. Acassiz. (1 Plate.) December, 1892 . 
No. 5.— Reports on the Dredging Operations off the West Coast of Central 
America to the Galapagos, etc., by the U.S. Fish Commission Steamer 
“ Albatross.” ILI. On a Peculiar Type of Arenaceous Foraminifer from 
the American Tropical Pacific, Neusina Agassizi. By A. Gots. (1 Plate.) 
December, 1892 . 
No. 6.— Reports on the Results of Dredging by the United States Coast 
Survey Steamer “Blake.” XXXIV. Report on the Mollusca dredged 
by the “Blake,” in 1880, including Descriptions of several New Species. 
By KATHARINE JEANNETTE Busn. (2 Plates.) January, 1893 
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