488 
REVIEWS. 
Order HYDROIDJE. 
Sub-order I.—RIJGrOSiEA 
Sub-order II.—TABULATE.* 
Sub-order III.—TUBULARIiE. 
Family 1.—Cratox®. 
Clava, Gmel. Syncoryna, Fhr. 
Family 2.—Hydra CTiNiDiE. 
Hydractinia, Van Bened. 
Family 3.— Sarsiadjb. 
Coryne, Gart. Candelabrum, Be Bl. 
Syndictyon, A. Ag. Dipurena, McCr . 
Corynitis, McCr. Slabberia, Forbes. 
Family 4.—CytjeidvE. 
Cytseis, Fsch. (not Sars). 
Family 5.—CnADOKEMiDiE. 
Cladonema, Buj. Eleutberia, Quatr. 
Family 6.—EuDENDROiDiE. 
Endendrium, Fhr. 
Family 7.—Tiibtilarid^. 
Tubularia, Linn. (res). 
Thamnocnidia, Ag. 
Parypba, Ag. 
Ectopleura, Ag. 
Corymorpha, Sars. 
Steenstrupia, Forbes. 
Eupbysa, Forbes. 
Hybocodon, Ag. 
Family 8 .—Pennarim. 
Pennaria, Gold/. Zanclea, Gegenb. 
Grlobiceps, Ayres. 
Family 9.—BouaAENViLLiDJE. 
Bougainvillia, Less. Eatbkia, Br. 
Margelis, Steenst. Kollikeria, Ag. 
Lizzia, Forbes. 
Family 10.—Nemopsid^;. 
Nemopsis, Ag. Acaulis, Stimp. 
* For the families and genera of these groups reference is made to the works of 
Milne-Edwards and Haime. The Tubulosa Professor Agassiz regards as low forms 
of Tabulata. 
