NO. 1 fraser: hydroids 29 



in succession seems to terminate the stem, while the offshoot becomes 

 the main stem for the next internode; the angle between the offshoot 

 and the stem is so small that the general direction of the growth of the 

 colony is but little changed. In no case are there more than 7 or 8 

 zooids in the colony, and there may be only 1 or 2. The main stem has 

 several annulations at the base, the short pedicels are annulated through- 

 out and the larger pedicels, proximally and distally. The hydrotheca is 

 broadly campanulate with 10 acute teeth on the margin. A line runs 

 backward from the tip of each tooth a short distance toward the base 

 of the hydrotheca. 



Gonosome. — Gonangium arising from the stolon, with little indica- 

 tion of a pedicel, smooth, with a short distal collar. 



Distribution. — Post Office Bay, on coral at low tide ; north of White 

 Friars Islands, on coral in 5 fathoms. 



Glytia attenuata (Calkins) 



Campanularia attenuata Calkins^ Hyd. of Puget Sound, 1899, p. 350. 

 Clytia attenuata Fraser^ Hyd. of Vancouver Island, 1914, p. 142. 

 Distribution. — Tagus Cove, on coral at low tide. 



PGlytia carinadentata, new species 

 Plate 7, Fig. 30 



Trophosome. — Colony small, slender, 5 mm. high; no branches, not 

 even a continuous stem. The basal portion continues to form the pedi- 

 cel for the proximal zooid; a short distance proximal to the base of 

 the hydrotheca another stem is given off, forming a pronounced knee at 

 its origin; this continues to form the pedicel of the second zooid, and 

 this may give off a third in the same way, except that the distal portion 

 (in this case, the pedicel for the third zooid) does not give off any stem 

 or pedicel. 



The original stem is annulated at the base, a short distance proxi- 

 mal to the point where the next one has its origin, and immediately 

 below the hydrotheca; the intermediate stem is annulated at the base 

 and below the base of the hydrotheca as is the terminal one. The 

 hydrotheca is nearly tubular, 1.0 mm. long, 0.5 mm. wide; the margin 

 is provided with 12-14 acute teeth, each of which is distinctly keeled. 



