HYDROIDS OF THE WOODS HOLE REGION. 
339 
Gonosome . — Gonophores borne in dense clusters, the female without evident radial canals, and 
with conical tentacular processes at their oral ends. 
Color. — Perisarc, in adult specimens, yellow. Body of hydranths and gonophores pinkish scarlet. 
Distribution . — Found on rocky and shelly bottoms. A number of Specimens secured growing 
on Eudendrium dispar and on seaweed at U. S. Fish Commission station 7060, Muskegat Life-Saving 
station bearing N. by E. £ E. 41 miles. Depth, 5 fathoms. 
Tubularia spectabilis (Ag. ). Fig. 18. 
( Thamnocnidia spectabilis Agassiz, Cont. Nat. Hist. U. S., IV, p. 271.) 
Trophosome . — Colony irregularly branched and sparsely annulated, attaining a height of about 4 
inches. Hydranths with about 20 tentacles in the proximal row and nearly the same number in the 
distal row. 
Gonosome . — As in the last species, except that the clusters of gonophores are larger and longer. 
Color . — The stems are very pale; almost white. Hydranth body and gonophores rose red. 
Distribution . — Found on rocks at end of Newport Island. At Woods Hole, locality not given. 
16. Tubularia couthouyi. 
A. Sessile medusa. 
Tubularia tenella (Ag.). 
( Thamnocnidia tenella Ag.,Cont. Nat. Hist. U.S., IV, p.275.) 
Trophosome — Colony very small for this genus, hardly exceeding 1 inch in height. Stems loosely 
branching, not distinctly annulated. Hydranths with a proximal row of about 18 tentacles and about 
the same number in the distal row. 
Gonosome . — As in the last species. 
Color . — Stem pale, almost white. Hydranth bodies and gonophores pink. 
Distribution . — The open ocean in rocky pools (A. Agassiz). Vineyard Sound, 6 to 10 fathoms. 
(A. E. Verrill. ) 
The best distinguishing mark of this species seems to be its small size, only about half that of 
T. spectabilis. 
