ME. G. HODGE ON THE ECHINODERMATA. 43 



Rev. A. M. Norman has however made a careful examination of 

 the Northumbrian specimen, and also of one sent him from the 

 Clyde, which he finds do not agree with the original description 

 of Agassiz, although they do with that of Barrett, the inference 

 being that the latter author was incorrect in referring his speci- 

 men to the species described by Agassiz. Mr. Norman has 

 accordingly re-named Barrett's specimen, or rather corrected his 

 name, for the specimen cannot be found. 



Two species obtained in 1863, viz., Qphiura squamosa and 

 Echinus Drobachiensis, were not taken during the present year, 

 although we dredged the localities in which they were previ- 

 ously found, at least so far as we could judge. In the case of 

 the latter species this is the more remarkable, as it was taken in 

 great numbers at a spot near the Fern Islands, which afforded 

 capital landmarks. The Ophiura being rare, and only obtained 

 several miles from land in deep water, there was much greater 

 difficulty in determining the actual spot. These are instances of 

 the uncertainty of dredging, even when weather and sea are 

 favourable. 



Six species have been added to our local Fauna, viz., Stichaster 

 roseus, Echinus Drobachiensis, E. pictus, Eehinocardium pennati- 

 flclum, Thyonidium hyalinum, and Thy one flexus, certainly a satis- 

 factory result. 



The arrangement and nomenclature here adopted is that re- 

 cently proposed by the Rev. A. M. Norman,* which meets a 

 want long felt by British naturalists, who have hitherto been far 

 behind continental authors in their classification of these animals. 

 I therefore considered it advisable to adopt his system in this the 

 final dredging list, more especially as it will be used in my Cata- 

 logue of the Echinodermata of our district. I would also take 

 this opportunity of recording my obligations to Mr. Norman for 

 much valuable assistance, more especially in examining the doubt- 

 ful specimens of Holothuria, when he pointed out the distinct 

 characters of Thy one flexus now described for the first time. 



* On the Genera and Species of British Echinodermata, by the Rev. A. M. Norman, 

 M.A. Annals and Magazine of Natural History, February, 1865. 



