Observations on British Zoophytes and Protozoa. 153 



The following Communications were read : — 



I. Observations on British Zoophytes and Protozoa — 1. On the Struc- 

 ture and Reproduction of Boderia Turneri, a new Ithizopod ; 

 2. On the Prehensile Apparatus and Sting-Cells of Cydippe; 3. On 

 the Stein-Canals of Tubularia indivisa. By T. Stretiiill Wright, 

 MD. 



1. On the Structure and Reproduction of Boderia Turneri.* 

 (Plate II.) 



Explanation of Plate. 

 Fig. 1. Boderia Turneri ; a, ovum. 



Fig 2. Large specimen of B. Turneri, with two groups of ova. Probably con- 

 sisting of two animals in conjugation. 



Fig. 3. B. Turneri, having ruptured its test and spread itself into a ragged 

 mass previous to depositing the naviculoid bodies. 



Fig. 4. Group of naviculoid bodies. 



Figs. 5 and 6. Naviculoid body previous to and after the discharge of the 



amoeba. , 

 Fig. 7. Amoeboid germ of B. Turneri. 



In July 1863 a number of shells and zoophytes were 

 brought in by my son, Mr Stre thill Harry Wright, which 

 were dredged in the neighbourhood of Inchkeith. They 

 were placed in vessels of sea-water, and in a few days a 

 number of the rhizopods, to which I have given the name 

 of Boderia, appeared on the sides of the glass. The animal 

 (fig. 1) consists of a simple mass of deep brown, sometimes 

 orange, sarcode, enclosed in a very delicate membranous 

 envelope, from openings in which it protrudes long pseu- 

 dopodial branches, generally three or four in number, but 

 sometimes more numerous, especially in the larger specimens. 

 Its shape is variable, sometimes presenting the appearance 

 of a conical mass with pseudopodia spreading over the glass 

 to which its base adheres ; at other times, that of an ex- 

 tended plate with many angles, from each of which protrudes 

 a pseudopodial branch. In the majority of individuals a 

 single large nucleus (fig. 1, a) only appears, spherical and 

 transparent, but in others three or four such bodies occur 



This animal was first named Turneria, after W. Turner, M.B., who kindly 

 insisted me in the examination of it ; but as " Turneria" was found to bo 

 preoccupied, " Boderia," one of tho ancient names of the Firth of Forth, was 

 adopted. 



