ON THE MARINE ZOOLOGY OF STRANGFORD LOUGH. 105 
Mr. Thompson and Mr. Hyndman, during excursions in 1832, 1846, and 
1851. Some of the results of these dredgings, found among the papers of 
Mr. Thompson, will be given separately ; the exact places dredged by these 
gentlemen are not in every case recorded. 
About the middle of June of the present year (1857) I began the exa- 
mination of the Lough; fortunately the weather was so favourable that 
during fifteen days’ stay at Portaferry, twelve dredging excursions were 
made, each occupying five to eight hours. At the end of the first week I 
was joined by KE. Waller, Esq., and received valuable aid from him in 
recording the lists of species. 
It may be necessary to state that species designated as common or very 
common are those of which a considerable number of specimens were brought 
up at every haul of the dredge ; of those called rare, not more than four or 
five were procured, either at one haul or as the result of several trials; the 
Species marked very rare, are those of which not more than four or five 
specimens (generally not so many) were found among the entire products 
of all the excursions: as examples, may be mentioned Chemnitzia scalaris and 
Lerebratula caput-serpentis. 
These symbols have been used for brevity’s sake :-— 
Netpeomimogr......'..** | Wery tateiswatt.soneick «. Tt 
Common...... Sele. ania Living... #023. soe. l 
Fare S40)0.0.. eels to | abead: s..nieieer see d 
Strangford Lough, Castle Ward Bay ; a quarter of a mile from the shore, 
depth seven to twenty fathoms; three and a half miles from the sea; bot- 
tom mud, small stones, gravel. 
TUNICATA. 
Aplidium fallax * | Clavellina lepadiformis + | Molgula tubulosa * 
LAMELLIBRANCHIATA, 
Pholadide. Pholas candida ...... t d. Cyprinide,  Astarte triangularis... + J. 
Gastrochenide. Saxicava arctica... t J. Cardiade. Cardium echinatum . * d. 
TUQOSA ..eeeeee * 1, edule ...000...... * d, 
Myade. Mya truncata ......... t+ d. — nodosum......... * ], 
Corbulide. Corbula nucleus...... ag TE fasciatum ...... td. 
Anatinide. Thracia phaseolina... f d. /_ —— pygmeeum ...... TZ. 
Solenide. Solen ensis .........06 *i dd. Suecicum ...... td, 
—— pellucidus ...... T 2. Lucinide. Lucina borealis ...... Ah 
Solecurtide. Solecurtus coarctatus { d. flexuosa ......... td. 
Tellinide. PsammobiaFerroensis * d. Kelliade. Kellia suborbicularis . t 7, 
— tellinella......... 7 1. Mytilide. Modiola modiolus ... * 7. 
Syndosmya alba...... +1. —— phaseolina?...... td. 
prismatica ...... { Mytilus edulis......... on 
Mactride. Mactra elliptica...... tl. Arcade. Nucula nucleus ...... oars 
Veneride, Tapes virginea ..... ie ges NEA ...0eeeceeee if 2. 
pullastra......... TU. Leda caudata ......... tu. 
BUYCA cescececeoes + d. Ostreade. Lima Loscombii ...... Tt d. 
Venus casina ......... T 1. Pecten striatus ...... td. 
fasciata .s..seeee ate MaXiMUS......... Fil. 
Ovata ss... seater ots opercularis ...... wer” 
striatula ....... aA tigrinUS ......... Tt d. 
% striatula .........** d, Ostrea edulis ......... HOA 
Cyprinidae. Cyprina Islandica ... + 1. Anomia ephippium... * J, 
: : Astarte sulcata ...... f 1. — striata...... danny T d. 
