Mr. E. M^ Andrew on Mr. Jeffreys' s last Dredging Report, 357 



Table (continued). 



Species. 



>^ 



Pleurograpsus linearis, Carr. . . 



vagans, Nick 



Graptolites Bohemicus, JBarr. . . 



colonus, £arr 



discretus, Nich 



fimbriatus, Nich 



Flemingii, Salt 



lobif erus, M'' Coy 



Nilssonii, Barr 



priodon, Bronn 



Sagittarius, Limi 



Sedgwickii, BoHl. 



tenuis, Bortl. 



turriculatus, Barr 



Rastrites capillaris, Carr 



Linnaei, Barr 



peregrinus, Barr 



Helicograpsus gracilis, Hall . . 

 Cyrtograpsus Murchisoni, Carr. 

 Retiolites Geinitzianus, Barr. 



perlatus, Nich 



venosus, Hall 



Dicranograpsus ramosus, Hall 

 Callograpsus elegans, Hall .... 

 Ptilograpsus anglicus, Nich. . . 



XLII. — Remarhs upon Mr. J. Gwyn Jeffreys'' s last Dredging 

 Report. Bj R. M^ Andrew, F.R.S. 



My friend Mr. Jeffreys, in the Dredging Report read by him 

 at the Norwich Meeting of the British Association, and pub- 

 lished in the Number of the ^ Annals of Natural History ' for 

 last month, gives a summary of observations previously re- 

 corded by him ; and as some of these are not in accordance 

 with the result of my dredging experience, I feel called upon 

 to state the grounds upon which I am compelled to differ from 

 one who is generally so trustworthy an authority, and to make 

 a few remarks bearing upon the questions at issue. Mr. 

 Jeffreys states : — 



" 1. The bathymetrical zones have been too much divided 



