156 THE ROYAL SOCIETY OF CANADA 



Calycella syringa (Linnaeus) 

 PI. XVII, Fig. 59 



Sertularia syringa Lininleus, Syst. Nat., 1767, p. 1311. 

 Calycella pygmœa Fraser, West Coast Hydroids, 1911, p. 41. 

 Calycella syringa Fraser, West Coast Hydroids, 1911, p. 42. 



Trophosome. — Stem smooth, not reticulated; hydrotheca tubular, 

 margin distinct; operculum of 8-9 segments; reduplication of margin 

 often occurs. There is an extreme amount of variation in the size of 

 the hydrotheca and the length of the pedicel but in all cases the pedicel 

 is annulated throughout. 



Gonosome. — Gonangia borne on the stolon, pedicel with two or 

 three annulations,foval or obovate; sporosacs are extruded into an 

 acrocyst. 



Distribution. — Port Townshend (Calkins) ; Puget Sound (Nutting) ; 

 Bare I. (Hartlaub); Queen Charlotte Is., Banks I., Departure Bay, 

 Dodds Narrows, San Juan Archipelago (Fraser) ; found almost 

 everywhere in the region where dredging has been done. 



The genus Calycella has given me much worry. It is widely 

 distributed along both thé Atlantic and the Pacific coasts of North 

 America and it has been difficult to decide as to whether one species 

 or two are to be found. The variation is so extreme that it seemed 

 scarcely possible that the larger variety could be the same species 

 as the smaller, particularly so as there seemed to be a gap in the grada- 

 tion at a point between the two sizes. In the larger variety the hydro- 

 thecae were found up to -8 mm. in length and in the smaller variety 

 hydrothecae as short as -2 mm. were found. 



In all material previously reported upon, I was unable to find 

 any gonangia with the variety that seemed to correspond to Calycella 

 pygmœa Alder, and I could not find any indication that it had been 

 found for this species by any one else, hence it seemed better to report 

 the large specimens as Calycella syringa and the smaller as C. pygmœa. 

 Now I have found gonangia in colonies with the smaller type of hydro- 

 theca and although smaller than those found with the larger type 

 they do not differ in any other particular. As this is the same partic- 

 ular in which the hydrothecae differ, I must conclude that all belong 

 to the one species in which there is an extreme amount of variation. 

 The figures will show rather extreme cases of both hydrothecae and 

 gonangia. 



Genus CAMPANULINA 



Trophosome. — Stem usually branched but not always so; hy- 

 drotheca oval or ovate, margin not distinct; segments of the oper- 

 culum rather long and slender. 



