PENNATULIDA. 



Sclerobelemnon Koll. 



Bathyptilitm Koll. 

 Fam. Umbellulidae. 



Umbellula Lam. 

 Fain. Protocaulida. 



Protocaulon Koll. 



Cladisais Kor. Dan. 

 Fam. Protoptilidee. 



Protoptilum Koll. 



Lygomorplia Kor. Dan 



Microptilum Koll. 



Trichoptilum Koll. 



l.iptoptiliiiu Koll. 



Sclerqptilum Koll. 



III. Renillece. 



Fam. Renillida. 



Renilla Lam. 



IV. VeretillecB. 



Fam. Caver nularidce. 



Cavernularia Val. 



Stylobcle union Koll. 

 Fam. LituaridiC. 



Lituaria Val. 



Vcrctillum Cuv. 



Policclla Gray. 



Clavella Grav. 



Studer (Versuch eines Syst. der Alcyonaria. Arch. Naturgesch. 53. Jahrg. 1. 1887, p. 22, and 

 Challenger Report vol.31, p. XXVII) has followed Koren & Danielssen 1 ), and like these authors 

 added a fifth to the four groups of Kolliker: Gondulece with fam. Gaud/tlidcs, genus GondztlKor. Dan. 

 but has otherwise restricted himself to the inserting of the later established genera into the families 

 of Kolliker {Sciophyllum Verr. in fam. Pennatulidce, Svava Kor. Dan. in Stylatulidcp, Gunneria Kor. Dan. 

 and Distichoptihnu Verr. in Protoptilidee). Later (Note prelim, etc. Camp, de l'Hirondelle 1890) he 

 has inserted into the fam. Pfcrocididce the new genus Gyrophyliinii Stud. Kiikenthal (Diagnosen 

 neuer Alcyonarien aus der Ausb. d. Deutschen Tiefseeexpedition. Zool. Anz. 25. Bd., 1902, p. 302) has 

 added still another (the sixth) group: Verticilladece: fam. Chuuncllida;, genera C/mnella Kiikenth. 

 and Ampliiantlms Kkth. Bourne (Anthozoa in the treatise on Zoology edited by Ray Lankester, 

 part II, 1900) almost without any alteration — at all events, without any essential alteration — has 

 followed Kolliker; it has to be remarked, however, that he regards tiie two families of Kolliker Vir- 

 gularida: and Stylatulidcz as subfamilies of one family ] r irgidarida'\ Pcnnatulida: and Pterocidida Koll. 

 are regarded also as subfamilies; and the family Gbndulidce is placed beside, and in the same group 

 with these families; finally also Funiculi nida and Bathyptilidce are degraded to subfamilies of one 

 family, as are also the two families of Veretillinse. The system has been more highly modified in 

 Delage & Herouard (Traite de Zoologie concrete T. 2, Partie 2, 1902); here there are five groups: 

 i) Frondina (Renilla), 2) Umbellina (Umbellula), 3) Juncina (Spicatce -\-Vcretillctr of Kolliker), 4) Pennina 

 (= Pennatulece of Kolliker), ^Acaulina (Gonditl). The extent of the families remains otherwise almost 

 unaltered; the family Protocaitlidm of Kolliker, however, has been placed under the family Kop/10- 

 belemnonincB D. & H., and the genus Deutocaulon Marsh. & Fowler has been included in the same 

 family; the genus Cladiscus Kor. Dan. has been removed to the family Protoptilina; the genus Svava 

 Kor. Dan. to the family Virgularince\ several genera of the same family, as Lygus Herkl., Radicipes 

 Stearns, as also some of the genera established by Gray in the family Peintatulince are also enumerated. 



M Nye Alcyonider etc. 18S4. 



