HYDROID FAUNA OF THE BERMUDAS, 243 



This paper records 37 species, including all the hydroids reported 

 from Bermuda up to the present. Where both trophosome and gono- 

 some have been adequately described elsewhere in readily available 

 papers, as is nearly always the case, I have attempted no taxonomic 

 discussion. References are given to the text and plates of the original 

 description, and also to the standard works dealing with the hydroids 

 of the American shores of the Atlantic, in many of which a more com- 

 plete bibliography may be found. Similar references are given for the 

 species which I have not seen, but which have been reported from 

 Bermuda by Congdon and others. 



Family BOUGAINVILLIDAE. 

 Genus Bimeria. 



Bimeria humilis Allman. 



Allman, 1877, p. 8, pi. 5, figs. 3-4. 

 Congdon, 1907, p. 467, fig. 6. 



Family PENNARIDAE. 

 Genus Pennaria. 



Pennaria tiarella McCrady. 



McCrady, 1857, p. 51. 

 Hargitt, 1900, p. 387, 4 pis. 

 Hargitt, 1901, p. 311, figs. 8, 9. 

 Nutting, 1901, p. 337, fig. 14. 

 Congdon, 1907, p. 464. 

 Fraser, 1912, p. 355, fig. 12. 



Pennaria tiarella is common on the buoys and reefs about Hamilton 

 Harbor and Great Sound, and on the flats outside. Specimens exam- 

 ined showed as many as 17 filiform tentacles, confirming Congdon's 

 belief that P. symmetrica (Clarke, 1879) of Cuba, which has 18 filiform 

 tentacles, is identical with P. tiarella. 



Stoloniferous reproduction was here observed for the first time in the 

 family, and, so far as I am aware, for the first time in the whole group 

 of Gymnoblastea. ^Yell-marked stolons extend from the distal ends 



