haplostome^. 51 



Suborder HAPLOSTOME.E Agass. 



Haplostomea Agass. (excl. LuccmarUe A. Ac). Cout. Xut. Hist. U. S., IV. p. 1G7. 18G2. 



Family THALASSANTHE^ Less. 



ThalasMnlhe(c Less. ZodjiIi. Acal,, p. 298. 1843. 

 T/iatassanlhcce Ag.\ss. C'oiit. Nat. Hist. U. S., IV. p. 167. 1862. 

 JE<jinid(E Gegenh. Zeits.. f. W. Zool, VHI. p. 258. 1856. 

 yEf/mirfce McCn. Gyum. Cliarl. Ilarb., p. 107. 



FOVEOLIA Pkr. et Les. 



FoveoUa Per. et Les. Ann. du ^SIus., XIV. p. 27. 1809. 

 FovcoHd Agass. Cont. Nat. Hist. U. S., IV. p. 1G8. 1862. 

 Cunina Escii. Syst. d. Acal., p. 116. 1829. 

 Cunina Bl. Man. d'Actinol., p. 279. 1834. 

 Cum'na Less. Zooph. Acal., p. 301. 1843. 

 Cuuina Lamk. Syst. Anim. s. Vert., III. p. 142. 

 Cuniua Gkcksd. Zeit. f. Wi.ss. ZooL, p. 259. 1856. 

 Cunina McCu. Proc. Elliot Soc, p. 108. 1857. 



Foveolia octonaria A. Agass. 



Cunina octonaria McCr. Proc. Elliot Soc. PI. XH. Figs. 4, 5, p. 109. 



Cunina octonaria Agass. Cont. Nat. Hist. U. S., IV. p. 168. 1862. 



Cunina octonaria McCr. Pis. 4, 5, 6, 7, for Embryolog. Ilist. ; Elliot Soc., pp. 1 -36. 1856. 



Charleston, S. C. (McCrady). 



Museum diagram No. 15, after McCrady. 



CAMPANELLA Bl. 



CampaneUaBh. (nonLpaa.). Man. dActin., p. 286. 18.14. 

 CampaneUa Agass. Cont. Nat. Hist. U. S., IV. p. 1G9. 1SG2. 

 ^(jinopsis J. MiiLL. (jion Br.). Ai-cliiv f. Anat., p. 272. 1S51. 



Fritz Midler was the first to show (Wieg. Archiv., 1801) that the 

 position of the ^ginida? and Charybdeidai among the Hydroids was 

 not a natural one. lie proposed for the reception of these groups a 

 new division equivalent to the Discojjhorai and Hydroids. But as he 

 considers the Ctenophora; and lIydromedusa> as the two great divisions 

 of the Acalephs, his group of iEgineoe would hold very nearly the same 

 rank as that which we are induced to assifrn to it here, — tlial of a 

 su])order among Discophora\ From the examination of tlie only spe- 

 cies of Canipanella thus far found on our coast, and a comparison 



