86 Part III—Twenty-sixzth Annual Report 
Genus Taenia, Linné. 
Taenia sp. PI. V., figs. 10-11. 
A specimen of a Cestode that appears to belong to the genus J'aenia 
was obtained in the intestine of an Kel captured in the Loch of Loirston, 
near Cove, Kincardineshire, in 1901. The specimen measured about 
75 mm. in length, and was moderately slender. The head seen in front is 
obscurely quadrangular, with the bothria occupying the bluntly-rounded 
corners, and nearly equidistant. In the centre is a minute stellate disk, 
somewhat difficult to make out. ‘he bothria are circular, surrounded by 
a muscular ring, and with a membrane extending over the inner half, 
The head appears to be unarmed. This specimen has some resemblance 
to a form mentioned by Linton found in the intestine of “ Anguzlla 
chrysypa (Anguilla vulgaris),” and named by him Taenia dilatata.* 
The Loch of Loirston specimen may belong to this species, but I scarcely 
think so; the 7. dilatata Linton, shows the front aspect of the head 
made uneven by shallow ‘‘ dilatations ” which is not the case with the 
specimen recorded here. I therefore prefer for the present to leave the 
species unnamed. 
NEMATHELMINTHA. 
Sub-Order AcaANTHOCEPHALA, Rudolphi. 
Genus Echinorhynchus. 
Echinorhynchus proteus, Westrumb. PI. IV., figs. 3-4; Pl. VIL, fig. 1. 
1821. Hechinorhynchus proteus, Westrumb, De Helminth. 
Acanth., p. 37, tab. 1, figs. 11-12. 
1850. chinorhynchus proteus, Diesing, Syst. Helminth., 
Mol Tray. 
This curious species was observed in the intestine of an Eel, Anguilla 
vulgaris, Cuv., captured near the mouth of the River Dee at Aberdeen in 
July 1905. In this species the proboscis is short and feebly armed ; it is 
also sub-clavate in form, rather linear or cylindrical. Immediately posterior 
to the proboscis is a large bulb-like expansion (or bulla), which the parasite 
seems to have the power to compress or dilate at will, for it can insert not 
only the proboscis but the bulla also into the tissues of the muscus mem- 
brane of the intestine, as shown by the photograph (Pl. VI., fig. 1). This 
figure represents a small portion of the inner surface of the intestine of 
of the Eel with two Hchinorhyncht in situ ; the proboscis and 6ulla of the 
parasites are entirely immersed in the substance of the intestinal wall. A 
careful examination of the fish revealed the fact that in a few instances 
the proboscis of the parasite had pierced right through the intestine so 
that the apex of the proboscis could be easily seen projecting slightly on 
the outside surface of the wali of the intestine. 
Between the bwila and the body of the Cestode there is a long slender 
neck, and both the bulla and the neck are unarmed. 
The length of the specimen represented by the drawing (PI. I'V., fig. 3), 
is sixteen millimeters, or fully half an inch. 
* Parasites of Fishes of the Woods Hole region, U.S. Fish Commission Bull. for 
1899, p. 435, Pl. XXV., figs. 272-273, 
