On the Annelids dredged off the Shetland Islands. 249 
31. Verrucaria nigrescens, Pers., Nyl. Scand. 271. 
32. Verrucaria fuscella, Turn., Ach. Nyl. /. c. 271. 
33. Verrucarta rupestris, Schrad., Ach., Nyl. Pyrenoce. 30; 
Scand. 275 (Lichen immersus, Hftm., 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 
Fumago, and is always sterile. It may be called Mumago cir- 
cumvagans, and may be regarded as a form or variety of the 
common Fumago vagans. 
IP AMME NIA, sche ec aici cottage oo a ae i eaee | 
lysis «. fic-3 tos ya: vtate ate etn 7 
HCO AMORA Ler Sc oa «eh ro ead ee Ze 
MD CCTO EY se Siceese so oy ee le chord eae 3 
VANE HIRONAE Ae, sists, SA oe os ee eae 1 
WIGIEUGHELS. -< arc cis uke gn rene a 
40 
XXVIII.—Report on the Annelids dredged off the Shetland 
Islands by Mr. Gwyn Jeffreys in 1867. By W.C. M‘Inrosn, 
M.D, H.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 Rev. 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, 
