142 DIPHASIA. 



Cat. No. 1G9, N.ahant, 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 cornicina INIcCr. 



Dijnamena cornicina McCit. Gyiiin. C'hai-1. Ilarb., 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 Agass. 



DipJiasia Agass. Cont. Nat. Hist. U. S., IV. p. 355. 18G2. 



Diphasia fallax Agass. 



Diphasia fallax Agass. Cont. Nat. Hist. U. S., IV. p. 355. 1862. 

 Serlularia fallax Johnst. Brit. Zoopli., p. 73, PI. 11, Figs. 2, 5, 6. 

 Serlularia fallax Stimps. Mar. Inv. 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. 



Diphasia rosacea Agass. Cont. Nat. Hist. U. S., IV. p. 355. 1862. 



Serlularia rosacea LlNX. Syst. 1306. 



Serlularia rosacea John.st. Brit. Z^)opIi., p. 64. 



Serlularia rosacea Pack.; in Cau. Nat. & Gool., Doc. 1863. 



? Serlularia pi unica Des. ; in Pr,oc. Bost. Sue. N. II., III. p. 66. 1848. 



Nahant, Suisconset, Mass. (A. and L. Aga.ssiz). 



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

 droiiu'dusarium. 



Cat. No. 181, Nahant,Mass., July, 180 1, A. Agassiz. Hydromedusarium. 



Cat. No. 182, Suisconset, Mass., July, 184U, L. Agassiz. Hydromedu- 

 sarium. 



