130 COELENTERATA. 



Fam. 2. Corynidae. Polyps with scattered, more or less spirally disposed, 

 capitate tentacles. Coryne Gartner; Actinogonium Allm. ; Syncoryne Ehrb.i; 

 Gymnocoryne Hincks ; Gcmmaria McCrady. 



Fam. 3. Bougainvillidae, Hypostome not abruptly differentiated (conical). 

 Tentacles filiform in a single circle round the base of the hypostome. Bougain- 

 villia Lesson; Perigonimus Sars ; Bimcria S. Wright; Dicoryne Allm. ; Stylactis 

 Allm. ; Atractylis S. Wright ; Diplura Green ; Hydrnnthea Hincks ; Cionistes 

 S. Wright ; Hetcrocordyle Allm. ; Wrightia Allm. ; Garveia S. Wright. 



Fam. 4. Eudendridae. Hypostome abruptly differentiated from the body 

 (everted). Tentacles filiform in a single row. Eudcndrium Ehrb. 



Fam. 5. Pennaridae. Polyps with filiform and capitate tentacles. Pcnnaria 

 Goldfuss ; Hulocordylc Allm. ; Stauridiiim Duj. ; Vorticlava Alder ; Hctcroste- 

 phanus Allm. ; Acharadria S. Wright ; Acaulis Stimpson ; Cladonema Duj. 



Fam. 6. Cladocorynidae, Polyps with simple and ramified capitate tentacles. 

 Cladocoryne Rotch. 



Fam. 7. Clavatellidae. With simple capitate tentacles in a single row. 

 Claxatella Hincks. 



Fam. 8. Tubularidae. Polyp with a proximal and distal row of simple 

 filiform tentacles. Tubularia L. ; Hybocodon Ag. ; Ectopleura Ag. 



Fam. 9. Myriothelidae. Polyp solitary. Tentacles scattered, capitate. 

 Myriothela Sars. 



Section 2. Hydractininae. 



Colonial. Perisark invested by a superficial covering of naked coenosark ; 

 with spiral zooids. Very frequently found coating the gastropod shell of a 

 Hermit Crab. 



Fam. 10. Hydractinidae, With sessile gonophores. Hydractinia v. Ben. 



Fam. 11. Podocorynidae. Gonophores as free medusae. Podocorync Sars 

 (Fig. 108) ; Corynopsis Allm. 



Section 3. Corymorphinae. 

 Polyps solitary, without perisark. 



Fam. 12. Corymorphidae. Gonophores as free medusae. Corymorpha Sars ; 

 Halatmclus Allm.; AmaUhaea 0. Schmidt. 



Fam. 13. Monocaulidae. Gonophores as fixed sporosacs. Monocaulus Allm. 



Section 4. Hydrolarinae. 



Polyps unsymmetrical, with the tentacles, one or two in number, springing 

 from one side of the body. 



Fam. 14. Hydrolaridae. Lar Gosse. 



The Medusae of this order are arranged by Haeckel as follows : 



ANTHOMEDUSAE. 



Graspedota without ofoct/xfs, irith ocelli at the base of the tentacles, 

 an/1 irith /iKDiulrial yonads ; radial canals usually 4i rarely 6 or 8 ; 

 budded from Polyps of the Tubulariae. 



Fam. 1. Codonidae. Month-opening simple; gonads not radially divided; 

 4 narrow radial canals ; unbranched tentacles. The polyps of most Sarsiadae 

 belong to the genus Syncoryne, of Ectoplcura to Tubularia, of Euphysidae to 

 Corymorpha, of Globiccps to Pcnnaria. 



