426 On (I new Cestode i^w from Sj>itshnufeti. 



Echinorhynchus longicollis, Villot, 1875. 



The body of a turnstono {Arenar'm interpres), preserved 

 in spirit, was submitted to the writer to ])e examined for 

 internal parasites, lu the upper part of the intestine there 

 were a number of cestodes of one or two species, too poorly 

 preserved to be identified. In the lower portion, for some 

 tliree inches above the origin of the cicca, were found several 

 specimens of tiie above-mentioned Echinorhynchus. At the 

 point of attachment of each worm there was a conspicuous 

 nodular swelling on the external surface of the wall of the 

 intestine. Two of the worms were attached at the same 

 level, so that the two nodules, viewed from the exterior, at 

 first looked like a paired structure proper to the bird's 

 intestine. Each nodule was filled with dense material, in 

 which the proboscis of the worm was firmly embedded, 



Echinorhynchus longicollis does not seem to have been 

 fully described, and its proper systematic position remains 

 uncertain. Liihe (1911) suggests that it perhaps belongs 

 to the genus Arhythmorhynchus or to some closely-related 

 genus. In Arhythmorhynchus the proboscis is highly 

 characteristic, having a swelling in the middle of its lengtli 

 and remarkable local variations in the form and size of the 

 hooks. There is also a characteristic swelling of the 

 anterior portion of the body. These peculiarities are absent 

 in the present material. The proboscis appears to be nearly 

 cylindrical and the hooks of almost uniform size, so that it 

 appears impossible to assign the species to Arhythuwrhynchus. 

 The condition of the material, however, scarcely warrants an 

 attempt to give a new description. 



HiRUDINEA. 



Two leeches were obtained by dredging in Klaas Billen 

 Bay, and tliese appear to belong to the following sjjecies : — 



(1) Ahranchus scorpii (Malm), taken at about 15 fathoms; 



(2) probably Pontobdella muricuta (L.). The latter is a very 

 small individual, and does not show the characteristic warty 

 papillae of the skin. These, however, are not always visible 

 in P. muricata *. The specimen had stained the spirit in 

 which it was received a bright green, and the presence 

 of a green pigment soluble in alcohol is highly suggestive of 

 P. muricata. 



* See Harding, ' Parasitology,' iii. (1910), p. 144. 



