The ForxowiNG Rkports are in pkepauation on the Dredging 

 Opeuations off the West Coast of Central America to thk 

 Galapagos, to the West Coast of Mexico, and in the Gulf of 

 California, in Charge of Alexander Agassiz, carried on*?jy 

 the U.S. Fish Commission Steamer " Alratuoss," during 1891, 

 IviEUT. Commander Z. L. Tanner, U. S. N., Commanding. 



A. AGASSIZ. II.i General Sketch of the 



Expedition of the "Albatross," from 



February to May, 1891. 

 A. AGASSIZ. The Acalephs and the Pelagic 



Fauna. 

 A. AGASSIZ. 1.2 On Calamocrinus, a new 



Stalked Crinoid from the Galapagos. 

 A. AGASSIZ. The Echini. 

 JAS. E. BENEDICT. The Annelids. 

 R. BERGH. The Nudibranchs. 

 K. BRANDT. The Sagittse. 

 K. BRANDT. The Thalassicolse. 

 GEO. BROOK. The Antipathids. 

 C. CHUN. The Siphonophores. 

 W. H. DALL. The Mollusks. 

 C. B. DAVENPORT. The Bryozoa. 

 S. F. CLARKE and F. E. PEABODY. The 



Hydroids. 

 W. FAXON. VI.s The Crustacea. 

 S. GARMAN. The Fishes. 

 A. GOES. III.^ The Foraminifera. 

 C. HARTLAUB. The Comatul». 

 W. A. HERDMAN. The Ascidians. 

 W. E. HOYLE. The Cephalopods. 

 G. VON KOCH. The Deep-Sea Corals. 



R. VON LENDENFELD. The Phosphores- 

 cent Organs of Fishes. 

 H. LUDWIG. IV.s The Holothurians. 

 C. F. LUTKEN. The Ophiuridffi. 



E. L. MARK. The Actinarians. 



F. MEINERT. The Isopods. 



GEO. P. MERRILL. V." The Rocks of the 

 Galapagos. 



G. W. MiJLLER. The Ostracods. 



JOHN MURRAY. The Bottom Specimens. 

 ROBERT RIDGWAY. The Alcoholic Birds. 

 P. SCHIEMENZ. The Pteropods and Het- 



eropods. 

 W. SCHIMKEWITCH. The Pycnogonid». 

 S. H. SCUDDER. The Orthoptera. 

 W. PERCY SLADEN. The Starfishes. 

 L. STEJNEGER. The Reptiles. 

 TH. STUDER. The Alcyonarians. 

 M. P. A. TRAUTSTEDT. The Salpid» and 



Doliolidse. 

 E. P.' VAN DUZEE. The Halobatidse. 

 H. B. "WARD. The Sipunculoids. 

 H. V. WILSON. The Sponges. 

 W. McM. WOODWORTH. The Planarians. 



VBulI. M. C. Z., Vol. XXI., No. i, June, 1891, 16 vp. ; and Vol. XXIII., No. 1, February, 1S92, 

 I pp. , 22 Plates. 



"- Mem. M. 0. Z., Vol. XVII., No. 2, January, 1892, 95 pp., 32 Plates. 



5 Bull. M. C. Z., Vol XXIV., No. 7, August, 1893, 72 pp. 



* Bull. M. C. Z., Vol. XXIII., No. 5, December, 1892, 4 pp., 1 Plate. 



5 Bull. M. C. Z., Vol. XXIV., No. 4, June, 1893, 10 pp. [Zool. Anzeig , No. 420, 189,3.] 



6 Bull. M. 0. Z.. Vol. XVI., No. 13, July, ISIS, 3 pp. 



