HYDROIDS OF THE WOODS HOLE REGION. 
377 
Proboscis rather large, capable of being protruded nearly to the bell opening, and ending in 4 
mouth-tentacles which are branched, but not so extensively as in preceding species. Radial canals, 4. 
Colors . — Marginal swellings deep orange brown. 
Distribution. — Newport, Rhode Island. 
Willia ornata McCr. 
(Proc. Elliott Soc., vol. I,No. l,p. 149.) 
Bell subconical. Tentacles of adult 16, one to each branch of the radial canals. Proboscis short, 
ending in 4 lobular unbranched mouth-tentacles armed with nematocysts which are not aggregated 
into round batteries. Ovaries forming 4 masses around proximal part of proboscis. Radial canals 4, 
each divided distally into 4 branches. Between each pair of tentacles a superficial structure like a 
“knotted chord ” passes upward on outside of bell. Sense-bull is found at bases of tentacles. 
Colors . — Not described by McCrady or Agassiz. 
Distribution . — Buzzards Bay, Naushon. (A. Ag. ) 
I have not seen this species, and the above description is condensed from that of McCrady. 
92. Orchistoma tentaculata Mayer. A. Aboral view. B. Lateral view. 
Orchistoma tentaculata Mayer. Fig. 92. 
(Bull. Mus. Comp. Zoo!., vol. xxxvn, No. 1, p. 3.) 
Bell deep, cup-shaped, its substance very thick in upper portion much reducing depth of bell 
cavity. Marginal tentacles 32, with sense-bulbs at their bases. No otocysts. Proboscis short, with 4 
lobulated mouth-arms, the lobes margined with nematocyst-bearing tentacles. Radial canals 16, 
alternating with 16 short tubes given off from near top of bell cavity. Ovaries borne on proboscis. 
Colors . — Proboscis and sense-bulbs red. 
Distribution. — Newport, Rhode Island. 
Eutima limpida A. Ag. 
(North American Acalephce, p. 11(>.) 
Like E. nrdra with the following exceptions: Bases of the four tentacles not swollen, and each 
provided with two lateral cirri. The ovaries, tentacles, and proboscis almost colorless. 
Distribution . — Buzzards Bay; Naushon. (A. Ag. ) 
