2(30 PROP. ALLMAN OK NEW QENERA 



made apparent. It was impossible, however, from the dead speci- 

 men to determine whether the contents of the gonangia were sporo- 

 sacs or planoblasts ; and it is therefore, as in all similar cases, odI j 

 provisionally that the present Hydroid can be assigned to a defi- 

 nite genus. 



Campanularia gracilis. Plate XII. figs. 5, 6." 



Tropliosome. Hydrophyton a slender, smooth, creeping tube, 

 sending off from distance to distance long slender hydrothecal 

 branches ; hydrothecal branches with one or two rings at their 

 origin from the creeping stem, and two deep constrictions at the 

 base of the hydrotheca, destitute of annulation on the remainder 

 of their length. Hydrothecse deep bell-shaped, about -^-^ of an 

 inch in height. 



Gonosome. Gronangia borne by the creeping tube, scattered, 

 cylindrical, about ^ of an inch in height, deeply and regularly 

 annulated, tapering below into a short peduncle, and terminating 

 distally in a truncated summit. 



Locality. Japan, Capt. St. John. 



This little Campanularian occurred abundantly on the same 

 Hydroid which gave support to Campanularia grandis, and crept, 

 also over the stems and hydrothecse of the latter, with whose 

 great size this small form strikingly contrasted. TsTumerous 

 young solitary individuals, with the embryonal hydrorhizal shield 

 still present, had attached themselves to the supporting.Hydroids. 



Though the hydranths were sufficiently: well preserved, nothing 

 could be determined regarding the contents of the gonangia ; and 

 without a knowledge of these the reference of the Hydroid to the 

 genus Campanularia is only provisional. It is probably, however, 

 a true Campanularia., and appears to be nearly allied to C. JoJin- 

 stoni. 



Campanularia juncea. Plate XI. figs. 3, 4. 



Tropliosome. Hydrocaulus consisting of a cluster of strong 

 stems, which spring from a common entangled mass of hydro- 

 rhizal filaments, and, after rising to some height as simple undi- 

 vided tubes, begin to send off thinner, simple, for the most part 

 alternately disposed branches, and continue to ascend to a height 

 of about 12 inches, becoming gradually thinner towards the distal 

 extremity. Hydrothecse large, tobacco-pipe-shaped, almost sessile, 

 supported on bracket-like lateral processes, which are situated 



