NO. 1 fraser: hydroids 13 



Family Tubidendridae 



Genus BALE A 



Balea irregularis, new species 

 Plate 1, Fig. 5 



Trophosome. — Colony fascicled, 6 cm. in length, with few irregu- 

 larly placed branches, much more slender than the main stem. Some 

 of the tubes have naked coenosarc for at least a portion of their length. 

 The hydranths appear on the branches only, growing from short hydro- 

 phores that are sessile on two of the tubes, one on each side of the 

 branch; these are very irregularly arranged, sometimes quite isolated, 

 sometimes with two in succession forming a definite pair, sometimes, 

 on the distal portion of the branches, more segregated. The hydranth 

 and its pedicel, both stout, are without visible perisarc, about 2 mm. 

 long. 



There are two sets of filiform tentacles, the proximal, having the 

 appearance of being reduced in size and number (4), well separated 

 from the distal set of 10-12 well-developed tentacles. 



The sarcostyles are numerous on the main stem and the branches. 



Gonosome. — Not observed. 



Distribution. — Dredged in the open passage between Indefatigable 

 and Charles islands, 65-70 fathoms. 



This species bears much resemblance to Balea mirabilis Nutting; 

 the most noticeable difference is in the nature of the proximal tentacles. 



Family Gorynidac 



Genus GORYNE 



Coryne pusilla Gaertner 



Coryne pusilla Gaertner, Pall. Spicil. Zool., I, Fasc. 10, 1774, p. 40. 

 HiNCKS, British Hydroid Zoophytes, 1868, p. 39. 



Distribution. — South Bay, Cerros Island, 10-15 fathoms. 



Coryne repens, new species 

 Plate 1, Fig. 6 



Trophosome. — Colony consisting mainly of individual hydroids 

 arising from a creeping stolon that does not form any definite network 

 over its support ; the stolon is somewhat wavy but seldom distinctly 



i W fti. 



