THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[THIKD SERIES.] 



" perlitora spargitc museum. 



Naiades, et circOm vitreos considite foiites : 

 PoUice virgineo teneros hie earpite flores : 

 Floribus et pictum, divse, replete eanistrum. 

 At vos, o Nymphffi Craterides, ite sub undas ; 

 Ite, recurvato variata corallia trunco 

 Vellite muscosis e rupibus, et mihi conchas 

 Ferte, Dese pelagi, et pingui eonehylia sueco." 



N.Parthenii Giannettasii Eel, 1. 



No. 61. JANUARY 1863. 



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



I. On the Structure of Corymorpha nutans. 



1 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 (VVieg. 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 I 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 foUow^ing ac- 



Ann, &i Mag. N. Hist. Ser. 3. Vol. xi. 1 



