Observations on British Zoophytes. 35 



cimen of Turris neglecta laden with dark crimson ova. This 

 prize I accommodated with a commodious apartment, in which 

 it might exercise the duties of maternity. After a weary 

 delay of nearly a fortnight, the young made their appearance 

 as dark crimson ciliated larvae. These underwent the changes 

 so well described by Mr Gosse ; but instead of being destroyed 

 by starvation in their infancy, the four-armed polyps under- 

 went a further development into a zoophyte resembling Clava 

 repens (fig. 1, Plate III.) The young of Turris neglecta, 

 which I now place on the table, and to which I have given the 

 name of Clavula Gossii, may be described as follows : — 



Clavula Gossii (Proles Turris neglectw). Polypary creep- 

 ing, sheathed in a chitinous polypidom. Polyps minute, 

 seated on short stalks, spindle-shaped, furnished with about 

 twelve tentacles ; upper row of tentacles long, filiform, four in 

 number, erect ; rest of tentacles scattered, shorter, inclined 

 upwards ; colour crimson. 



2. On the Development of Hippocrene (Bougainvillea) Britannica 



from Atractylis (Eudendrium) ramosa. 



This paper appeared as a note to Dr Wright's paper on 

 Atractylis on page 449, Vol I., of the Proceedings. 



3. On the Development of Hydra tuba (Strobila) from Chrysaora. 



In September last, I extracted a larger number of young 

 from the reproductive sacs of Chrysaora. The young in 

 their first stage are (as has been repeatedly observed) swim- 

 ming ciliated larvae. The greater part of these attached 

 themselves to the surface of the water, and hung downwards as 

 globular sacs seated on long thin pedicles or stalks (Plate 

 III., fig. 2). The pedicles were surrounded by a thick and 

 very transparent gelatinous case, corallum, or polypidom. The 

 globular sac acquired a mouth, and afterwards four, eight, 

 sixteen tentacles successively. As the Hydra grew, it pro- 

 duced additional attachments from its body. The bases of 

 these attachments in the fully-developed Hydra appeared as a 

 number of closely-aggregated circles (fig. 3), in which the 

 four tissues, colletoderm (a), corallum (6), ectoderm (c), and 



