CLASSIFICATIONS OF ZOOPHYTES. 449 



genera, but who, on critically examining these genera, will 

 deny that he proceeded without caution and without judg- 

 ment, determined apparently to make as many as could be 

 made, that his successors might be spared the unprofitable 

 task of coining and inventing names ! * 



System of LAMARCK. (1816.) 

 Class POLYPI. 



Order I. P. CILIATI. 



Polypes without tentacula, but having near the mouth, or at its ori- 

 fice, vibratile ciliae or ciliated and rotatory organs which agitate 

 or whirl the water. 



I Section. VIBBATILES. Battulus, Trichocerca, Vaginicola. 



II Section. ROTIFERES. Folliculina, Brachionus, Furcularia, 



Urceolaria, Vorticella, Tubicolaria. 



Order II. P. DENUDATI. 



Polypes with tentacula, without an envelope or polypidom, and fixed, 

 either permanently or spontaneously. 



Hydra Coryne Pedicellaria Zoantha. 



Order III. P. VAGINATI. 



Polypes with tentacula, invariably fixed in an inorganic polypidom 

 which envelops them; and forming, in general, compound animals. 

 * Polypidoms of homogeneous composition. 



I Section. POLYPIERS FLUVIATILES. Difflugia, Cristatella, Spon- 



gilla, Alcyonella. 



II Section. POLYPIERS VAGINIFORMES. * Polypidoms naked, not 



varnished nor encrusted on the exterior. (1) Cells terminal 

 Plumatella, Tubularia, Cornularia, Campanularia. (2) 

 Cells lateral Sertularia, Antennularia, Plumularia, Seria- 

 laria. * * Polypidoms varnished or slightly crusted on the 

 exterior. Liriozoa, Cellaria, Anguinaria, Dichotomaria, 

 Tibiana, Acetabulum, Polyphysa. 



* Blainville in criticising Lamouroux's latest work, says, " Nous nous bornerons a 

 dire que Lamouroux a encore considerablement augment^ le nombre des genres, 

 surtout parmi les polypiers pierreux, pour y placer un grand nombre de corps organises 

 fossiles, trouves dans le calcaire a polypiers de Caen, et que malheureusement la 

 plupart de ces genres sont mal caracterises, ce dont je me suis assure directement sur 

 les objets memes qui ont servi a ses observations." Man. d' Actinol. p. 54. 



G G 



