170 



RHIZOGETON. 



RHIZOGETON AGASS. 



Rhizogeton AGASS. Cont. Nat. Hist. U. S., IV. p. 347. 1862. 



Rhizogeton fusiformis AGASS. 



RMzogeton fusiformis AGASS. Cont. Nat. Hist. U. S., IV. pp. 224, 347, PI. 20, Figs. 1 7 - 23. 1862. 



Massachusetts Bay (Agassiz). 



Cat. No. 52, Nahant, Mass., July, 1861, A. Agassiz. Hydrarium. 



CLAVA GMELIN. 



Clava GMELIN ; in Beschaft. d. Berlin. Ges. Naturf. Freunde. 1775. 



274. 



Clava leptostyla AGASS. 



Clava leptottyla AGASS. Cont. Nat. Hist. U. S., IV. pp. 218, 222, 

 Fig. 32 ; 338, PI. 20, Figs. 11-16*; PI. 21. 1862. 



Clava multicornis STIMPS. Mar. Inv. Grand Manan, p. 11. 1853. 



Clava multicornis LEIDY. Mar. Inv. Rhode Island and New Jersey, 

 p. 3, PI. XI. Figs. 33, 34. 1855. 



Clava multicornis PACK. ; in Can. Nat. & Geol. Dec. 1863. 



The Clava leptostyla (Fig. 274) seems to differ 

 from the C. multicornis by the greater number of 

 its tentacles. 



Point Judith (Leidy) ; Massachusetts Bay (Ag- 

 assiz). 



Cat. No. 51, Kingston, Mass., July, 1851, H. J. 

 Clark. 



Cat. No. 451, Nahant, Mass., A. Agassiz. Hydro- 

 medusarium. 



Museum Diagram, No. 24, after L. Agassiz. 



Fig. 274. Clava leptostyla ; greatly magnified. 



