SYSTEMATIC TABLE 



OF THE ORDERS AND FAMILIES OF NORTH A3IERICAN ACALEPH^ 

 DESCRIBED IN THIS VOLUME. 



PAGE 



Order HYDROID.E Johnst. ... 64 



Suborder Sertulari^ Ag. . . 68 



Family Oceanidae Esch. . . .68 



Family Eucopidse Geg. . . 81 

 Family ^quoridse Esch. ... 95 



Family Geryonopsidse Ag. . . 112 



Family Polyorchidaj ^. /Ijf. . .118 



Family Laodiceidse yl 5'. . . 121 



Family Melicertidaj Ag. . . . 1 28 



Family PlumularidsB Ag. . . 139 



Family Sertulariadse Johnst. . . 141 



Suborder Tubulaei^ Ag. . . 149 



Family Nemopsidte Ag. . . . 149 



Family Bougainvilleae Liilk. . 152 



Family Nucleiferfe Less. . . .164 



Family Williadae Forces . . 171 



Family Sarsiadaa Forbes . . .175 



Family Orthoeorynidse A. Ag. . 183 



Family Pennaridaa McCr. . .186 



Family Tubulariadas Jb7i?iS<. . 189 



Family Hydraidfe Gray . . .197 



Family Hydractinidfe Ag. . , 198 



Suborder Diphtje Ciw. , . .199 



Family Diphyidje Esch. . . 199 



Suborder Phtsophor^ Gold/. . . 200 



Family Agalmid^ Brandt . . 200 



Suborder PoRPiTiE Gold/. . . .214 



Family Physalidse Brandt . . 214 



Family Velellida; Esch. . . .216 



Family Porpitidfe Guild. . . 218 



Suborder Tabulate Ag. . . .219 



Family Milleporidas Ag. . . 219 



