100 



MEPORT — 1884. 



Family III. Horxi:rid.e. 

 HoRXEKA, Lamouroux. 



Family IV. Lichkxoporidj:. 

 LiciiP:NorORA, Dcfrance. Domopora, D'Orbigny. 



Class POLYZOA. 



= Brtozoa, Ehrenberp, Rcnss, Roemer, Marzoni, Waters, &c 

 = Brijozoa in part of American writers on Pala)ozoic Polyzoa. 



Sub-class HoLOBRANCHiA, E. Ray Lankestcr. Group a. Ectoprocta, 



Nitschc. 



Order Gv-mxclemata, Allman. 



POLTPIARIA Infundibllata, Gervai.i, 'Ann. des. Sc. Nat.' 1837. 

 Polyzoa Inflndidulata, Busk, ' Brit. Mus. Catalogue.' 



Sub-order, Cheilostomata, Busk. 



= Cklleporina, Ehrenberg. 



* Orifice of the zocecium closed by a movable opercular valve. Ova 

 ■usually matured in external marsnpia (ova-cells). Avicularia and vibra- 

 cula (appendicular organs), frequently present.' — Hincks' ' Brit. Mar. 

 Polyzoa,' vol. i. p. cxxxvi. 



Family I. Akteid.'e, Hincks, Smitt. 



In Mr. Busk's classification which pi'efaces the ' Crag Polyzoa ' Mono- 

 graph, published in 1850, the gcuus Aetea is one of the genera of the 

 group HippoihoiJie. But Smitt and also Hincks place the species of 

 Aetea in a fa!?aily by themselves. Mr. A. W. Waters «iiys,' ' the difficulty 

 is very great as to the position of Aetea, as it has relationships with the 

 Cheilostomata, and also with Gleiiostoinata, in having a collar, as seen in 

 the Naples specimens, and which Smitt pointed out in 1867 ; and 

 whether it will have to bo placed in a new sub-order — Stulunata, Carus, or 

 Stolovifera, Ehlers — is yet problematic' Mr. Hincks, however (op. cit. p. 

 2), admitting that the Aeieicke constitute a peculiar group, agrees 'with 

 Smitt in ranking them as a family distinguished by the Ctenostomatous 

 cast of its strHctui*e. On the other hand, it must bo noted that they are 

 allied to Eucratca through the character of the polypide and in some 

 other points.' 



The family contains a single genus, and so far as my knowledge goes 

 I have but few notices of fossil species ; nevertheless, in making a full 

 record of the whole of the fossil Polyzoa, it appears to me unwise to pass 

 over those genera of which we have few fossil representatives, especially 

 as one of the objects of this Report is to furnish the student with as full 

 a list of synonyms, both of genera and species, as the means at my disposal 

 will allow. 



> • Bryozoa of the Uay of Niplcs' Ann. Maj. Xat. Hist., FeLruai-y 1879. 



