CONTENTS. 
PAGE 
No. 1. — Reports on the Dredging Operations off the West Coast of Central 
America to the Galapagos, to the West Coast of Mexico, and in the Gulf of 
California, in Charge of ALEXANDER AGASSIZ, carried on by the U. S. Fish 
Commission Steamer Albatross,“ during 1891, Lieut. Z. L. TANNER, 
U. S. N., commanding. XX. The Foraminifera. By Ax Goiis. (9 
, ñ ß 1 
No. 2. — Contributions from the Zoölogical Laboratory, under the Direction 
of Dr. E. L. Mark. LV. The Reactions of Metridium to Food and other 
Substanoós. By Ge H. PANIER ee, vc v5 105 
No. 3. — Contributions from the Zoólogical Laboratory, etc. LVI. The 
Anatomy and Histology of Caudina arenata Gould. By J. H. Gerourp. 
(8 Plates.) April, 1896 7 A X. vi qa 
No. 4.— Contributions from the Zoólogical Laboratory, ete. LVIII. Fur- 
ther Studies on the Spermatogenesis of Caloptenus femur-rubrum. By E. 
ines ll ⁵⁵w OR « MA 
No. 5. — Contributions from the Zodlogical Laboratory, etc. LIX. The 
Development of the Wing Scales and their Pigment in Butterflies and 
Moths: By A: G. MITIN. (7 Plates) JUDO, . 9207 
No. 6. — Contributions from the Zoölogical Laboratory, ete. LXV. Report 
on the Turbellaria collected by the Michigan State Fish Commission dur- 
ing the Summers of 1893 and 1894. By W. MoM. Woopworrn. (1 Plate.) 
V% md er Wile We St eo ad Fe) al ee a 
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