NORTHUMBERLAND AND DURHAM. 233 
sidered this species to be the 7. Dumortierit of Professor Van 
Beneden; specimens sent me by that distinguished naturalist, 
however, prove that his 7. Dumortierii is different from this ; 
being a much smaller species, not more than three quarters of 
an inch high, and annulated at the base. The head also is 
proportionally larger. 
T. simplex is not unfrequently met with from deep water at 
Cullercoats, and is distinguished from 7. indivisa by its solitary 
character, and much smaller size ; from 7’. gracilis, by being un- 
branched and without annulations. 
A large Tubularia, twelve to fifteen inches in length, re- 
sembling 7. zndivisa, but generally solitary and unbranched, with 
the young adhering to the side of the adult, occurs not un- 
frequently on this coast. This appears to be the Tubularia 
gigantea of Lamouroux, which Dr. Johnston considered to be a 
variety of 7. indivisa. There is some reason, however, to think 
that it may be a distinct species, and it is therefore desirable 
that it should be examined in a perfect state. 
7. CORYMORPHA, Sars. 
1. C. nutans, Sars. 
Forb. and Goods. in Ann. Nat. Hist., v. v., p. 310. 
Johns. Brit. Zooph., p. 54., t. vii., f. 3—6. 
This fine species has been dredged in considerable numbers by 
Mr. George Hodge, in from six to ten fathoms water, on a sandy 
bottom, at Seaham Harbour. (See p. 80 of the present volume.) 
2. C. nana, Alder. Pl. XI. 
Alder in Trans. Tynes. Club, v. iii., p. 108. 
It is now nearly twenty years since I first met with this in- 
teresting little species, at Newbiggin, from which time I had 
looked for it often without success, until the summer of 1860, 
when I fortunately obtained two living indivduals at Cullercoats. 
This puts me in a position to add considerably to the information 
hitherto published concerning the species, as well as to give 
more correct drawings of it in a living state. Corymorpha nana 
is a very active animal—constantly changing its form, and the 
