27 



No. a Reports on the DREDGING OPERATIONS of the U. S. C. S. Str. "Blake." I. 



Description of SOUNDING MACHINE, Water-Bottle, and Detacher. By 



Lieut.-Coinmander C. D. Sigsbee, D. S. N. pp. 11. 5 Plates. December, 1878. 60c. 

 No. 9. Reports on the DREDGING OPERATIONS of the U. S. C. S. Str. "Blake." II. 



ECHINI, by A. Agassiz. CORALS and CRINOIDS, by L. F. de PouRT.^iis. 



0PHIURAN3, by T. Lv.man. pp. 58. 10 Plates. December, 1878. S1.50. 

 No. 10. Reports on the DREDGING OPERATIONS of the U. S. C. S. Str. "Blake." III. 



Report on HYDROIDA. By S. F. Clarke, pp. 14. 5 Plates. January, 1879. Goo. 

 No. 11. On some Young Stages in the Development of HIPPA, PORCELLANA, and 



PINNIXA. By W. Faxon, pp. 16. 5 Plates. April, 1879. C6c. 

 No. 12. Reports on the DREDGING OPERATIONS of the U. S. C. S. Str. " Blake." IV. 



Preliminary Report on the "WORMS. By Prof. Ernst Ehlers of Gottingen. pp. 6. 



June, 1879. 5c. 



*No. 13. On the Classification of ROCKS. By M. E. Wadsworth. pp.13. June, 1879. 15c. 

 .Nc. 14. Letter No. 3 to C. P. Patterson, Supt. U. S. Coast Survey, on the DREDGING 

 OPERATIONS of the U. S. C. S. Str. " Blake." By A. Agassiz. pp. 14. 2 iMaps. 

 June, 1879. 35c. 



No. 15. On the Development of PAL^MONETES VULGARIS. ByWALTER Faxon, pp.28. 



4 Plates. September, 1879. 68c. 

 No. 16. On the Jaw and Lingual Dentition of certain TERRESTRIAL MOLLUSKS. By 



W. G. BiNNEY, pp. 38. 2 Plates. December, 1879. 55c. 



The sixth volume contains Part I. Nos. 1-11 : — 



No. 1. List of the DREDGING STATIONS occupied by the U. S. C. S. Steamers " Cor- 

 wln," "Bibb," " Hassler," and "Blake," irom 1837-1879. By Benjamin Peirce 

 and C.iRLiLE P. Patterson, Superintendents of the D. S. Coast Survey, pp. 16. Sep- 

 tember, 1879. 15c. 



No. 2. OPHIURID^ and ASTROPHYTID^ of the " Challenger " Expedition. By Theo- 

 dore Lyman. Part II. pp. 67. 9 Plates. December, 1879. SI. 50. 



No. 3. Reports on the Results of DREDGING under the Supervision of Alexander 

 Agassiz, in the Gulf of Mexico, 1877-78, by the U. S. C S. Str. " Blake." Lleut.- 

 Commander C. D. Sigsbee, U. S. N., commanding. V. General Conclusions from 

 a Preliminary Examination of the MOLLUSCA. By W. II, D.ill. pp. 9. 

 February, 1880. 10c. 



No. 4. Report on the Results of DREDGING, by the U. S.C. S. Str. "Blake." VI. Report 

 on the CORALS and ANTIPATHARIA. By L. F. de Pourtales. pp. 26. 

 3 Plates. February, 1880. 55c. 



No. 5. The Ethmoid Bone in the BATS. By Harrison Allen, M.D. pp. 2. February, 

 1880. 5c. 



No. 6. On Certain Species of CHELONIOID^. By S. W. Garman. pp. 4. March, 1880. 5c. 



No. 7. Contribution to a Knowledge of the Tubular JELLY FISHES. By J. Walter 

 Fewkes. pp. 20. 3 Plates. April, 1880. 50c. 



No. 8. Letter No. 4 to C. P. Patterson, Supt. U. S. Coast Survey, on the DREDGING 

 OPERATIONS of the U. S. C. S. Str. "Blake," Commander Bartlett, U. S. N., 

 during the summer of 1830. By A. Agassiz. pp. 8. September, 1830. lOc. 



No. 9. Reports on the Results of DREDGING by the U. S. C. S. Str. " Blake " VII. 



Description of a GRAVITATING TRAP for obtaining Specimens of Ani- 

 mal Life from intermedial ocean Dexjths. By Lieut.-Commander C. D. Sigsbee, 

 U. S. N. pp. 4. 1 Plate. September, 1880. 15c. 



No. 10. On some Points in the Structure of the Embryonic ZOEA. By Walter Faxon. 

 pp. 8. 2 double Plates. October, 1880. 40c. 



No. 11. New Species of SELACHIANS in the Museum Collection. By S. Garman. pp. 6. 

 October, 1880. 5c. 



Part II. 



No. 12. Maturation, Fecundation, and Segmentation of UMAX CAMPESTRIS. By 

 E. L. Mark. 5 Plates. {Tn press.) 



{No. 12 will end the volume.) 

 •Out of print. 



