18 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 4 



annulated or wavy throughout the whole length. Zooids given off 

 irregularly from all sides of the stem, the pedicel of each making an 

 acute angle with the stem; pedicel increases in diameter as it passes 

 out so that the distal portion bears some resemblance to a hydrotheca; 

 annulations or wrinkles close together in the proximal half or two 

 thirds, farther apart in the distal portion. Hydranth with 9-10 tentacles. 



Gonosome. — Not observed. 



Distribution. — Petatlan Bay, 5-10 fathoms; Isabel Island, 10-25 

 fathoms. 



This species looks much unlike any other species of Perigonimus 

 that has been described, especially as regards size, but it seems to fit 

 better with this genus than elsewhere and without the gonosome it 

 cannot be placed more definitely. It is just possible that if the gono- 

 some were known it might be necessary to place it in a new genus. 



Family Eudendridae 



Genus EUDENDRIUM 



Eudendrium breve, new species 

 Plate 3, Fig. 13 



Trophosome. — Individual zooids arising singly from an irregularly 

 reticulate stolon, the hydranth with its pedicel reaching a height of 

 2 mm.; stolon smooth; pedicel smooth, slightly wrinkled or with few 

 irregular annulations. Hydranths conspicuous with about 20 tentacles. 



Gonosome. — Not observed. 



Distribution. — Black Beach, low tide. 



This species has a more extensive and more closely reticulate stolon 

 than E. tenellum. It is not so slender as compared with the length of 

 the pedicel as this species is, and the individual zooids are much more 

 closely placed on the stolon. There were no gonophores of either sex 

 on any of the colonies obtained. 



Eudendrium capillare Alder 



Eudendrium capillare Alder, Ann. and Mag. Nat. Hist. (2), XVIII, 



1856, p. 355. 

 Fraser, Hyd. of Vancouver Island, 1914, p. 122. 



Distribution. — Pacora Island, 15-25 fathoms; Secas Islands, 25 

 fathoms. 



