On the Annelids dredged off the Shetland Islands. 249 



31. Verrucaria mgrescens, Pers., Nyl. Scand. 271. 



32. Verrucaria fuscella, Turn., Ach. Nyl. I. c. 271. 



33. Verrucaria rupestris^ Schrad., Ach., Nyl. Pyrenoc. 30 ; 

 Scand. 275 [Lichen immersusy HfFm., Pers. ; V. galactina^ 

 Mass., Anz.). 



It may be noticed also that Capnodium profusely covers the 

 upper portions of the branches of the trees with its thin, black, 

 unequal, areolato-difFract crust, which has every appearance of 

 a crustaceous lichen, but with the texture of the mycelium of 

 Fumagoj and is always sterile. It may be called Fumago cir- 

 cumvagans, and may be regarded as a form or variety of the 

 common Fumago vagans. 



Parmelia - 1 



Physcia 7 



Lecanora 23 



Lecidea 3 



Arthonia 1 



Verrucaria 5 



40 



XXVIII. — Report on the Annelids dredged off the Shetland 

 Islands hy Mr. Gwyn Jeffreys in 1867. By W. C. M'Intosh, 

 M.D.,F.L.S.* 



Mr. Gwyn Jeffreys, in his dredging-expedition to the Shet- 

 land Islands last year, kindly selected, chiefly with the assist- 

 ance of Mr. Sturges Dodd and the Kev. A. M. Norman, a large 

 number of Annelids, which he most courteously placed at my 

 disposal ; and, as they were properly preserved in vessels and 

 fluid sent for the purpose, their subsequent examination proved 

 very satisfactory. 



The majority of the Annelids come from St. Magnus Bay, 

 or, rather, from the deep water (80-100 fathoms) beyond this, 

 not because they so disproportionately abound there (although 

 the muddy sand is eminently favourable for their increase), 

 but probably because the dredging was most frequently car- 

 ried on in that neighbourhood. The other localities, in the 

 order of the respective collections, are off" Balta, North Unst, 

 Bressay Sound, Outer Haaf (Skerries), and (a small shore col- 

 lection made by Mr. Dodd) at Hillswick. 



* Communicated by the Author, having been read at the Meeting of 

 the British Association at Norwich, August 20, 1868. 



