POLYPODA. 
429 
Genus Trophonia. 
T. Goodsiri, Johnst. 
Dredged in Strangford Lough, near Portaferry, July, 1838, W. T. The 
specimens from which the original description was drawn up, were taken 
in June, 1839, at the Orkneys, by Messrs. Forbes and Goodsir. Donagh- 
adee, Dr. Drummond. In 20 fathoms, Belfast Bay, 1847, Mr. Hyndman. 
The Irish specimens are much smaller than those described by Dr. 
Johnston, but the bristles on every part of the body are considerably 
longer in proportion to the size of the animal than in those from Orkney ; 
they are finely iridescent, like the bristles of the Aphrodita acideata. 
ORDER II.— POLYPODA. 
TRIBE SERPULINA. 
Genus Pectinaria. 
P. belgica , Lam. 
North of Ireland ; not uncommon ; fed upon by flounders, & c., W. T. 
A tube dredged from about 8 fathoms in Strangford Lough, July, 1838, 
W. T. 
This is the size of the full-grown Dentalium entalis, and of similar 
curvature, but tapers more gracefully from the broad to the fine ex- 
tremity. 
Donovan, in figuring the “ straight-tubed Sabella” (S. tubiformis, vol. 
iv. pi. 133), remarked that the S. granulata , Linn., from its curvature was 
probably distinct, and consequently he adopted Pennant’s name for the 
straight one. Penn, figures it quite straight,* as well as Donovan — the 
latter had never seen it curved. Dr. Drummond, who has often taken 
the Amph. auricoma, never saw its tube otherwise than straight. A 
specimen of the curved form, of small size, was dredged from 50 fathoms, 
off South Rock, Co. Down, in 1843, by Mr. Hyndman. Size of my speci- 
men, length 1^ inches ; diameter at broader extremity l-6th of an inch ; 
at narrower l-16th of an inch. 
Genus Sabellaria. 
S, alveolata, Linn. 
Common in some parts of Belfast Bay, between tide-marks, W. T. 
“ Cork and Youghal Harbours” (Cork Fauna). 
8. crassissima , Penn. 
North of Ireland, Mr. Templeton. 
Genus Terebella. 
T. conchilega, Pall. 
Belfast Bay, Strangford Lough, and coast of Down, Mr. Hyndman 
and W. T. Bangor, Dr. Drummond. 
* He describes it “ bent.” 
