THE CAMPANULARID^ AND THE BONNEVIELLIDiE. 117 



Plate 14. 



Fig. 1. Clytia minuta Nutting. Colony (enlarged). 



2. Clytia Tninuta. Part of colony, showing straggling mode of growth (enlarged). 

 3,4. Clyria minuta. Hydrothecae (enlarged). 



5. Clytia univeTsitatis (Totiej). Branch (enlarged). 



6. Clytia universitatis. Gonangium (enlarged). 



Plate 15. 



Fig. 1. Clytiafragilis Congdon. Part of colony (enlarged). (After Congdon.) 



2. Clytia hendersoniTorrey. Branch with liydrothecse (enlarged). (After Torrey.) 



3. Clytia hendersoni. Branch with gonangia (enlarged). After Torrey.) 



4. Orthopyxis caliculata (KivLcks). Hydrotheca (enlarged). 



5. Orthopyxis compressa (Clark). Part of colony (enlarged). 



6. 7, 8. Orthopyxis covipressa. Hydrothecas, showing degrees of thickening of the walls (enlarged). 

 9,10. Orthopyxis compressa. Gonangia (enlarged), 



Plate 16. 



Fig. 1. Orthopyxis clytioides (Lamouroux). Hydrotheca (enlarged). 



2. Orthopyxis clytioides. Hydrotheca and retracted hydranth (enlarged). 



3. Orthopyxis crenata (Hartlaub). Hydrotheca (enlarged). 



4. Orthopyxis crenata. Hydrotheca and retracted hydranth (enlarged). 



5. Orthopyxis crenata. Hydrotheca (enlarged). 



6. Orthopyxis everta (CluA) . Part of colony (enlarged). 



7. 8. Orthopyxis everta. Gonangia, front and side views (enlarged). 



Plate 17. 



Fig. 1. Gonothyrxa loveni (Allman). Colony (enlarged). 



2. Gonothyrssa loveni. Gonangia with meconidia (enlarged). 



3. Gonothyrxa gracilis (Sara). Part of colony (enlarged). (After Allman.) 



4. Gonothyrssa clarkii (Marktanner-Turneretscher). Colony (enlarged). 



5. "IGonothyrxainornata Nutting. Part of type colony (enlarged). 

 6,7. IGonothyrxa inornata. Gonangia (enlarged). 



Plate 18. 



Fig. 1. Ohelia geniculataCLwcixws). Part of colony (enlarged). 



2. Obelia geniadata. Part of colony, showing ccenosarc (enlarged). 



3,4,5. Ohelia geniculata Medusae, dorsal, ventral, and lateral views (enlarged). 



6. Ohelia hyalina Clarke. Colony (enlarged). 



7. Ohelia hyalina. Hydranth (enlarged). 



8. Ohelia braziliensis (Meyen). Part of branch (enlarged). (After Meyen.) 



9. Ohelia hraziliensis. Gonangium (enlarged). (After Meyen.) 



Plate 19. 



Fig. 1. Ohelia duhia Nutting. Branch (enlarged). 



2. Obelia gracilis Calkins. Branch (enlarged). 



3. Ohelia gracilis. Hydranth (enlarged). 



4. Ohelia gracilis. Gonangium (enlarged). 



5. Obelia plicata (KixLcks) . Part of branch (enlarged). 



6. Obelia plicata. Gonangium (enlarged). 



Plate 20. 



Fig. 1. Ohelia corona Torrey. Part of branch (enlarged). 



2. Ohelia corona. Hydrotheca (enlarged). 



3. Ohelia austrogorgia Jaderholm. Part of colony (enlarged). 



4. Ohelia austrogorgia. Hydrotheca (enlarged). 



5. Ohelia bicuspidata Clark. Branch (enlarged). 



6. Obelia bicuspidata. Hydrotheca (greatly enlarged). 



7. Obelia dichotoma (Linnaeus). Part of branch (enlarged). 



55968°— IS 9 



