190 NUTTING [ J 7 2 ] 



Campanularia crenata ALLMAN, Diagnoses of new Genera and Species of 

 Hydroida, Linnsean Society Journal, Zoology, Vol. xi, p. 258, 1876. 



Distribution. Orca, Alaska (Harriman Exped.) ; Yukon Harbor, 

 Big Koniuji, Shumagin Islands, Alaska (Clark) ; Japan Coast (All- 

 man) ; Greenland (Levinsen). 



CAMPANULARIA URCEOLATA Clark. 



(Plate xvm, fig. 2.) 



Campanularia urceolata CLARK, Proc. Acad. Nat. Sciences, Philadelphia, 

 p. 215, 1876. 



Distribution. Yakutat Bay, Alaska (Harriman Exped.) ; Lituya 

 Bay, Alaska (Clark). 



The specimens collected by the Harriman Expedition were growing 

 profusely over the stems and branches of Thuiaria costata in com- 

 pany with another parasitic species. 



CAMPANULARIA REDUPLICATA sp. nov. 

 (Plate xvm, fig. i.) 



Trophosome. Colony consisting of unbranched stems or pedicels 

 springing from a creeping rootstock. Pedicels one to three times as 

 long as the hydrothecae, and strongly annulated throughout. Hydro- 

 thecae deeply campanulate, thick-walled ; margins armed with twelve 

 to fourteen rather pointed teeth, and reduplicated once or twice, giving 

 a striking and unusually ornate appearance. 



Gonosome. Gonangia roughly ovate, irregular in outline, with a 

 short neck, small terminal aperture and a very short pedicel. They 

 were empty in the specimens examined, so that it was impossible to 

 ascertain whether they produced planulae or medusas. 



Distribution. Yakutat, Alaska (Harriman Exped.). All the 

 specimens were found growing in a parasitic manner over colonies of 

 Thuiaria costata, in company with Campanularia urceolata. The 

 two species were often so intimately interwoven as they crept over the 

 stems and branches of the sertularian that I, at first, thought them 

 dimorphic forms of one species. However, in all cases careful dissection 

 showed that they were entirely separate colonies. The reduplication 

 of the hydrothecal margins seems to be a constant feature and adds 

 peculiar beauty to this striking little campanularian. 



CAMPANULARIA REGIA sp. nov. 



(Plate xix, figs, i, 2.) 



Trophosome. Colony consisting of a creeping rootstock without 

 annulations, giving forth strong pedicels that are sometimes longer 



