BRITISH ZOOPHYTES. 71 



FAMILY XL TUBULAEIID^. 



Polypites JiasJc-shaped or suh cylindrical, with two sets 

 of filiform tentacula, one oval, the other placed near the 

 base of the body. — T. H. 



The family Tubulariidce of Hincks includes the three 

 genera, Tubularia, Ectopleura, and Gorymorp)ha, all of 

 which conform to the diagnosis above set forth. Prof. 

 Allman, however, divides these three genera among 

 three families, and divides the genus Gorymorpha into 

 two genera. The following shows Prof. Allman^s 

 families and genera : — 



Keproduction by fixed sporosacs — Tubulariidoi ; 

 genus Tubularia. 



Reproduction by medusiform gonozooids, and having 

 a polypary — Hybdocoridce ; genus Ectopleura. 



Reproduction by medusiform gonozooids, but with- 

 out polypary — Gorymorphidce ; Gory}norj)ha,with sessile 

 gonophores ; Halatractus, with pedicellate gonophores. 



The character of the tentacles in all the families 

 agrees with Mr. Hincks' diagnosis of Tubulariidce, and 

 I have therefore retained the arrangement of that 

 author. 



Genus I. Tubulakia, Linnceus (in part). 



Stems simple or branched, rooted by a filiform stolon, 

 the whole invested by a polypary. Polypites flask- 

 shaped. Tentacles as in family character. Gonopliores 

 borne on peduncles springing from the body of the 

 polypite between the two circles of tentacles, and 

 developing fixed sporosacs. — T. H. 



1. T. iNDiviSA, Linn. 



