[fraser] HYDROIDS OF THE VANCOUVER ISLAND REGION 207 



intercalated, without a hydrocladium. I have not noticed three to the 

 internode but Torrey mention* that number. The presence of an 

 occasional intermediate internode in the hydrocladia has not been 

 mentioned. Taking these points into consideration, I am strongly 

 inclined to believe that P. goodei and P. plumularoides Clark are the 

 same species. The fact that P. plumularoides, according to Torrey, 

 has monothalamic nematophores, makes the probability greater. 

 The only difference that Torrey gives are: "The internodes of both stem 

 and hydrocladia are much longer than those of the latter species 

 (P. goodei) and the hydrocladia are not so strongly arched." These 

 are very variable points upon which to base a specific distinction. 

 Clark's specimens of P. plumularoides were 20 mm. in length, cor- 

 responding well with those of P. goodei. Torrey 's specimens were 

 but fragments. If the species are the same, the name P. plumula- 

 roides should be retained but I hesitate to make the change when 

 Torrey, having specimens of the two to campare, considered them to 

 be separate species. 



Calkins' species P. echinulata var. I think should be placed here 

 without doubt. The presence of occasional intermediate internodes 

 and the single hydrocladium to an internode, were difficulties in the 

 way of placing it with P. goodei in my previous paper but these are 

 difficulties no longer. In other respects it corresponds perfectly with 

 P. goodei. Nutting in his monograph has not recognized Calkins' 

 species P. echinulata, but he seems to have overlooked it altogether 

 as I do not find it included with any of his described species. 



Plumularia lagenifera Allman 



PI. XXXVI, Fig. 135 



Plumularia lagenifera Allman, Proc. Linn. Soc, London, 1885, 



p. 157. 

 Plumularia californica Marktanner-Turneretscher, Ann. des k.k. 



Nat. Hofm., 1890, p. 255. 

 Plumularia lagenifera Nutting, American Hydroids, pt. 1, 1900, 



p. 65. 

 Plumularia palmeri Nutting, Ibid., p. 65. 



Plumularia lagenifera Fraser, West Coast Hydroids, 1911, p. 82. 

 Plumularia palmeri Fraser, Ibid., p. 84. 



Trophosome. — Colonies plumose, from 5 to 10 cm. in height, 

 growing in clusters; stem simple, divided into regular internodes, 

 each of which bears a hydrocladium; the hydrocladia are alternate 

 but are not in the same plane, two in succession make an angle of 

 100°-120° with each other; they are short, seldom branched, divided 



