CGELENTERATA. 



ence of Palczocoryne to the order Corynida not wholly free from 



doubt. 



The genus Carynoides was proposed by the author for some 

 singular fossils from the Lower Silurian 

 Rocks of Scotland. Each consists of 

 a cylindrical corneous tube (fig. 23), 

 tapering towards the base, where it is 

 furnished with two small spines, and 

 expanding above into a species of 

 toothed cup. Corynoides consists of a 

 single polypite, and in this respect may 

 be compared with some living Cory- 

 nida. It would seem, however, not to 

 have been attached to any foreign 

 body as all living Corynids are 

 and its true affinities are thus rendered 

 uncertain. 

 II. THECAPHORA (or Sertularida and Campanularida). 



Animal compound, rooted and plant-like, consisting of numerous 



Fig. 23. Corynoides call' 

 cularis, enlarged. (Origi- 

 nal.) 



Fig. 24. a Sertularia (Diphasia) pinnata, natural size ; d Fragment of the same en- 

 larged, carrying a male capsule (p\ and showing the hydrothecse (h) ; b Fragment of 

 Cantpanularia neglecta (after Hincks), showing the polypites contained in their hydro- 

 theca? (Jt), and also the point at which the coenosarc communicates with the stomach of 

 the polypite (p). 



polypites united by common flesh or ccenosarc. The cctnosarc is 

 more or less branched, and secretes a strong chitinous investment or 

 " polypary? The polypites are also protected within " hydro- 



