23 
FISH TREMATODES OF THE NORTHUMBERLAND COAST. 
By MARIE V. LEBOUR, M.Sc., 
Armstrong College, Newcastle upon-Tvne. 
T l ie Allowing pages form an attempt at an investigation of the 
fish Trematode fauna of the Northumberland coast. Nothin- has 
as yet been done in this way locally, and, as was to be expected, 
a large number of Trematodes has been found. These are all 
new to Northumberland, some new to Britain, and five are, I 
beheve, new to science. The fish examined were almost entirely 
those commonly brought in by the fishing boats at North Shields, 
caught between Hartlepool and Newbiggin, 30 to 48 fathoms, with 
a few collected in the rock pools at Cullercoats. The food of 
the fish was always ascertained when possible, with a view to 
elucidating the life histories of the Trematodes, which are for 
the most part, unfortunately, still unknown. A list of the fish 
examined, with the food and the Trematodes found, is given here 
also a table showing what little is known of the life histories of 
the Trematodes. The fish were examined in June, August, and 
from October to March. Much fewer Trematodes were found in 
he winter months, some fish (notably the Whiting and Cod) being 
then hardly at all infested. On the other hand, QmUro^mZ 
Oracilescens appears to inhabit the Angler all the year round, and 
Stennffophorus furcujer and Zoojonoidcs viciparus are generally to 
be found in the Dab. The scarcity of Trematodes in the winter 
is perhaps due to the fish feeding less, which certainly seems to 
fee the case, the stomachs never being so full in the winter, and 
often quite empty. 
tb fl !l giVe / ere i^ ° riginal %Ure ° f eacb worm describcd (including 
^ nishV ■ ; Tl T ieS) ' aS far aS Possible, 
to furnish a guide to the fish Trematodes of this coast, and bring 
ah that is known together as a nucleus for future work. The 
figure s were nearly all drawn from living worms under pressure. 
frktlh r a l bGeU madG ° f ° dWs " Die Trematoden de 
Aiktischen Gebietes," Fauna Arctica (1905), the outlines of h 
1 ^cation of the Diyenca being here adopted. The Monona 
^s^ e ™f ng l ° *— - Siv/n in 
' l>ronn, "Klasson und Ordnungen des Huerreichs <• Bd. IV., Abt. 1 (1879-93), 
pag-e 889. 
