NO. 1 fraser: hydroids 43 



Haleclum insolens, new species 

 Plate 10, Fig. 46 



Trophosome. — Colony minute, slender, up to 1.5 mm. in height, 

 growing from a loose stoloniferous network. There may be a single 

 hydrophore with a rather long pedicel, but in most cases others have 

 been added. The second pedicel grows from the first just below the 

 hydrophore and, near its base, turns so that it is almost in the same 

 direction as the first; the third pedicel bears a similar relation to the 

 second, and there may be four or five in the same one-sided series, for 

 each in succession appears on the same side as the previous one, although 

 there may be a little spiral twisting. Occasionally one or more branches 

 are given off, but these are all also on the one side of the stem. There 

 are one or two annulations at the base of each pedicel, and sometimes 

 also in the course of the longer pedicels. The hydrophore is but slightly 

 everted. 



Gonosome. — The gonangium (only the female gonangia were ob- 

 served) is unusual in appearance for a Haleciutn species. It is obovate, 

 0.5 mm. in length, almost sessile and distinctly corrugated. The open- 

 ing is on the side about one third of the length of the pedicel from the 

 distal end; it is on the terminus of a small hydrophore-like structure 

 but no zooids were observed in the opening. 



Distribution. — Isabel Island, 15-25 fathoms. 



Halecium nanum Alder 



Halecium nanum Alder^ Ann. and Mag. Nat. Hist. (3), III, 1859, 

 p. 355. 

 Fraser^ Beaufort Hyd., 1912, p. 367. 



Distribution. — South Viradores Islands, 8-10 fathoms. 



Halecium regulare, new species 

 Plate 10, Fig. 47 



Trophosome. — Colony minute, slender, 5 mm., growing from a 

 stolon that forms a loose network; branches few or absent, similar to 

 the main stem. Stem zigzag, two or three nodes between the first hydro- 

 phore and the base of the stem ; in all other cases, there is a hydro- 

 phore to each internode. Hydrophore sessile, the margin even with the 

 node, expanding to the margin but not definitely flaring. 



Gonosome. — Not observed. 



