THE ANNALS 



. AND 



MAGAZINE OF NATURAL HISTORY. 



[THIRD SERIES.] 



,c perlitora spargite museum, 



Naiades, et circum vitreos considite fontes : 

 Pollice virgineo teneros hie carpite flores : 

 Floribus et pictum, diva?, replete canistrum. 

 At vos, o Nymphs Craterides, ite sub undas ; 

 Ite, recurvato variata corallia truueo 

 Vellite muscosis e rupibus, et mihi conchas 

 Ferte, Des pelagi, et pingui conchylia succo." 



N.Parth'enii Giannettasii Ecl.l. 



No. 61. JANUARY 1863. 



I. — Notes on the Hydroida. By Prof. Allman. 



I. On the Structure of Corymorplia nutans. 



I AM indebted to one of my pupils, Mr. John W. Macfie, for my 

 attention having been called to the occurrence of specimens of 

 a Corymorpha among the contents of a dredge brought up from 

 about 14 fathoms' depth, during a dredging expedition in the 

 Firth of Forth with the Natural-History Class of the University of . 

 Edinburgh. Though the species found does not entirely agree 

 with the diagnosis proposed by Sars (Wieg. Arch. 1860, transl. in 

 Ann. Nat. Hist. 1861, vol. viii.) for his C. nutans, I believe never- 

 theless that it must be regarded as identical with the C. nutans 

 of the eminent Norwegian zoologist. A considerable number of 

 specimens were obtained, and thus this interesting Tubularidan 

 has been for the first time added to the recorded fauna of the 

 Forth. 



The largest specimens found were about 2 inches in height, 

 the polype measuring from tip to tip of its extended tentacula 

 about | of an inch. 



Corymorpha presents among the Hydroida the very unusual 

 condition of a solitary polype, the complication from budding 

 being confined to the production of gonophores. For greater 

 facility of description, it will be convenient, in the following ac- 



Ann. % Mag. N. Hist. Ser. 3. Vol. xi. 1 



