128 Descriptions of New, or Little Known, Polyzoa. 



the branches beino- much more slender and containing fewer 

 cells. Some of my specimens form dense, shrub-like tufts 

 almost an inch in diameter. 



EXPLANATION OF PLATE. 



Fig. 1. Discoporella reticulata, natural size. Fig. la. The same 

 magnified. 



Fig. 2. Fasciculi pora bellis, natural size. Fig. 2a. Side view of 

 one of the bundles magnified. Fig. 2b. Vertical view of the 

 extremity of the same. 



Fig. 3. Discoporella pristis, natural size. Fig. 3a. A portion 

 magnified. Fig. 36. A small portion more highly magnified. 



Fig. 4. D. echinata, natural size. Fig. 4a. A portion of the same 

 magnified. 



Fig. 5. Fasciculipora fruticosa, natural size. Fig. 5a. Portion of 

 the same magnified. 



Art. XXIII. — Electricity as a Motive Power on Railways. 

 By Mr. G. W. Selby, Jun. 



[Read 13th December, 1883.] 



Art. XXIV. — Gees as a Motive Poiver 

 Professor Kernot, M.A. 



[Read 13th December, 1883.] 



