ANTHOMEDUSAE. 131 



Sub-fara. 1. Sarsiadae. With 4 radial tentacles. Codonium H. * ; Sarsia 

 Lesson ; Syndictyon A. Ag. ; Ectopleura L. Ag. ; Dipurena McCrady ; 

 Bathycodon H. 



Sub-fam. 2. Dinemidae. With 2 radial tentacles. Dicodonipm H. ; 

 Dinema v. Ben. 



Sub-fam. 3. Euphysidae. With 3 rudimentary tentacles, and one 

 strongly developed. Sieenstrupia Forbes ; Euphysa Forbes ; Hybocodon 

 L. Ag. ; Amplncodon H. 



Sub-fam. 4. Amalthaeidae. All four tentacles rudimentary, Amalthaea 

 0. Schmidt ; Globiccps Ayres. 



Fam. 2. Tiaridae. With 4 frilled buccal lobes ; with 4 manubrial gonads, 

 which may be split into 8 ; with 4 wide radial canals ; and unbranched tentacles. 

 Ontogeny only known in two species. The polyp of Turris neglecta is Clavula 

 Gossei, that of Corynetes Agassizii is Halocharis spiralis. 



Sub-fam. 1. Protiaridae. With 4 perradial tentacles. Protiara H.; 

 Modceria Forbes ; Corynetes McCrady. 



Sub-fam. 2. Amphinemidae. With 2 opposite radial tentacles. AmpTii- 

 nema H. ; Codonorchis H. ; Stomotoca L. Ag. 



Sub-fam. 3. Pandaeidae. With numerous tentacles. Pandaea Lesson ; 

 Conis Brandt ; Tiara Lesson ; Turris Lesson ; Catablema H. ; Turritopsis 

 McCrady ; Callitiara H. 



Fam. 3. Margelidae. With 4 or more simple or branched oral tentacles, 

 with 4 or 8 separate manubrial gonads ; with simple unbranched tentacles, which 

 may be uniformly distributed or grouped in 4 or 8 bundles. Development 

 known in a few species ; pol} 7 p usually belongs to Bougainvillea (Lizusa, Margelis, 

 Hippocrene, Rathkca), polyp of Dysomorpha to Podocoryne, of Cytaeandra to 

 llhizocline. The polyp of Lizzia (blondina ?} is said by Allman to be a Campanu- 

 larian, Laomedia (Leptoscyphus) tennis. 



Sub-fam. 1. Cytaeidae. With unbranched oral, and uniformly distributed 

 marginal tentacles. Cytaeis Eschsch ; Cubogaster H. ; Dysmorphosa Phillipi ; 

 Cytaeandra H. 



Sub-fam. 2. Lizusidae. With unbranched oral, and 4 or 8 bundles of 

 marginal tentacles. Lizusa H. ; Lizzia Forbes ; Lizzella H. 



Sub-fam. 3. Thamnostomidae. With 4 branched oral, and uniformly 

 distributed marginal tentacles. Thamnitis H., Thamnostylus H. ; Tham- 

 nostoma H. ; Limnorea Peron. 



Sub-fam. 4. Hippocrenidae. Oral tentacles branched, marginal tentacles 

 in 4 or 8 groups. Margelis Steenstrup ; Hippocrene Mertens ; Nemopsis 

 L. Ag. ; Margellium H. ; Rathkea Brandt. 



Fam. 4. Cladonemidae. With dichotomously branched or feathered tentacles, 

 with 4 to 8 narrow, simple or bifurcated radial canals, with 4 or 8 separate 

 manubrial gonads. Oral arms 4, numerous, or absent. Polyp form known 

 inl 3 genera, viz. , Gemmaria is the medusa of Gemellaria, Eleutheria of Clava- 

 tclla, Cladonema of Stauridium. 



Sub-fam. 1. Pteronemidae. Radial canals simple. PteronemaH. ; Zanclea 

 Gegenb. ; Gemmaria McCrady ; Eleutheria Quatref. 



Sub-fam. 2. Dendronemidae. Radial canals bifurcated. Ctenaria H. 

 resembles the Ctenophora, ex-umbrella with 8 adradial ribs of thread cells ; 

 Cladonema Duj. ; Dendronema H. 



* Throughout the Cnidaria H. stands for Haeckel. 



