186 Descriptions of Neiu, or Little-known, Polyzoa. 



only two or three in the diameter of a branch. The zooecia 

 are very long, distinct, and closely punctate, the puncta 

 being elevated inflations, darker in the centre, and frequently 

 perforated. The peristome, which is either annalated or 

 with annular series of minute punctures, projects much 

 forwards. The posterior surface is longitudinally sulcate, 

 and concentrically ridged. There are none of the calcified 

 bundles of radical tubes so characteristic of the other species 

 mentioned. 



EXPLANATION OF FIGURES. 



Plate I, 



Fig. 1. Lagenipora nitens. Fig la. A few zooecia, showing 

 the primary mouths. Fig 16. Mandible of vicarious 

 avicularium. 



Fig. 2. Schizoporella rostrata, two young zooecia. Fig. 2a. 

 Another portion of the same specimen, showing also 

 ooecia. 



Fig. 8. Schizoporella pachnoides. Fig. 3a. A single zooecium 

 from the same specimen. 



Fig. 4. Hornera raniosa, natural size. Fig. 4<a. Anterior 

 surface magnified. 



Fig. 5. Lichenopora Wilsoni, natural size. Fig. 5a. Section 

 of same, to show height of zooecia, magnified about two 

 diameters. Fig. 5b. Small portion, showing part of 

 central reticulation by fibres with spines; part of two 

 series of zooecia, and intervening cancelli. 



Plate II. 



Fig. 1. Scriipocellaria annectens, natural size. Fig. la. 



Anterior surface of branch magnified. Fig. Ih. Posterior 



aspect of same. 

 Fig. 2. Retepora Worsleyi, natural size. Fig. 2a. Anterior 



surface of branch magnified. Fig. 2h. Posterior aspect of 



same. 

 Fig. 3. Idmonea (raspare'Jisis, natural size. Fig. 8a. Anterior 



surface magnified. Fig. ch. Posterior surface. 



