142 DIPHASIA. 



Cat. No. 169, Nahant, June, 1855, H. J. Clark. Hydromedusarium. 



Cat. No. 170, Nahant, September, 1854, H. J. Clark. Hydrarium. 



Cat. No. 171, Chelsea Beach, L. Agassiz. Hydrarium. 



Cat. No. 172, Cohasset, Mass., L. Agassiz. Hydrarium. 



Cat. No. 173, Nantucket, Mass., August, 1857, L. Agassiz. Hydrome- 

 dusarium. 



Cat. No. 174, Grand Manan, August, 1857, J. E. Mills. Hydromedu- 

 sarium. 



Museum Diagram No. 18, after L. Agassiz. 



Dynamena corrdcina 



Dynamena cornicina McCu. Gymn. Charl. Harb., p. 102. 



Charleston, S. C. (L. Agassiz). 



Cat. No. 175, Charleston, S. C., L. Agassiz. Hydrarium. 



Cat. No. 176, Charleston, S. C., 1852, L. Agassiz. Hydrarium. 



DIPHASIA AOASS. 



Dipliasia AGASS. Cont. Nat. Hist. U. S., IV. p. 355. 1862. 



Diphasia fallax AGASS. 



Dipliasia fallax AGASS. Cont. Nat. Hist. U. S., IV. p. 355. 1862. 

 Sertularia fallax JOIIXST. Brit. Zooph., p. 73, PI. 11, Figs. 2, 5, 6. 

 Sertularia fallax STIMPS. Mar. luv. Grand Manan, p. 9. 1853. 



Grand Manan (W. Stimpson) ; Massachusetts Bay. 



Cat. No. 183, Eastport, Me., 1851, L. Agassiz. 



Cat. No. 184, Eastport, Me., 1852, W. Stimpson. 



Cat. No. 185, Massachusetts Bay, L. Agassiz. 



Cat, No. 427, Eastport, Me., 1861, Anticosti Expedition. 



Cat. No. 428, Eastport, Me., 1863, A. E. Verrill. 



Diphasia rosacea AGASS. 



Dipliasia rosacea AGASS. Gout. Nat. Hist. U. S., IV. p. 355. 1862. 



Sertularia rosacea Lixx. Sy-st. 1306. 



Sertularia rosacea JOHXST. Brit. Zooph., p. 64. 



Sertularia rosacea PACK.; in Can. Nat. & Geol., Dec. 1863. 



? Sertularia plwnea DES. ; in Proc. Bost. Soo. N. H., HI. p. G6. 1848. 



Nahant, Suisconset, Mass. (A. and L. Agassiz). 



Cat. No. 180, New Brighton, England, Oct. 1860, H. J. Clark. Hy- 

 dromedusarium. 



Cat. No. 181, Nahant, Mass., July, 1861, A. Agassiz. Hydromedusarium. 



Cat, No. 182, Suisconset, Mass., July, 1849, L. Agassiz. Hydromedu- 

 sarium. 



