348 



W. M. Bale : 



teristic wrinkled appearance. But great v^iiation in the strength 

 of the septal ridges is a general character of many species, and 

 has of itself no specific value. Neither in the Calif orni an nor the 

 Australian specimens which I have examined was there, in tlie 

 main stem, more than an occasional slight indication of septal 

 jidges. 



The species is extremely close to P. sefacea, and when describing 

 F. tur(/ida I had considerable doubt as to their specific relation- 

 ship. I cannot find any definite and constant distinction other 

 than the more ventricose condition of tlie hydrothecal internode in 

 F. lagenifera, while the hydrotheca itself is (in side view), but 

 little, or sometimes not at all, widened from the base upward. My 

 specimens of F. lagenifera have two sarcothecae in the axils, while 

 F. setacea has one; the distinction, however, may not be constant. 



Nutting says that specimens from Yale University Museum, 

 labelled " Coast of California," marked P. sefacea, belong un- 

 doubtedly to F. lagenifera. Presumably these are the specimens 

 Avhich Clark referred to F. sefacea. He described them as having 

 two sarcothecae in each axil, and his figure agrees better with P, 

 lage/nifera. 



Stechow considers that Inaba's '' No. 5 Plumularia sp." also 

 belongs here, but it agrees much better Avith the minute form 

 described by me as P. caliculata (q.v.). 



Plumularia caliculata ]^ale. 



Flumularia caliculata, Bale, Proc. Lin. Soc. N.S.W. (2), 

 iii., 1888, p. 780, pi. xx., figs. 9-11. 



No. 5 Plumularia sp., Inaba, Zool. Mag. Tokio, 1890, figs. 

 11-13. 



Plumularia lagenifera, Stechow, Hydroidpolypen der jap. 

 Ostkiiste, ii., 1913, p. 90, figs. 57, 58. 

 P. caliculata is a dwarf species, my specimens of which range 

 from 8 to 10 millimeters in height; the trophosome is almost a 

 miniature of that of P. sefacea except that the hydrothecae are 

 shallower and the septal ridges usually more pronounced. These 

 ridges are often conspicuous in the main stem, a feature which I 

 have not observed in P. sefacea or P. lagenifera. This character, 

 liowever, is variable, and in some specimens the ridges are less 

 developed. The hydrothecae are shallower than those of P. 



