74 



Part III. — Twenty-sixth Annual Report 



Schistocephalus solidus, Creplin. 

 Tetrarhynchus minutus, P. J. van Beneden 



„ tetrabothrius, P. J. van Beneden. 



„ megacephahis, Rudolphi. 



Phyllobothrium thridax, P. J. van Beneden. 



lactuca, P. J. van Beneden. 

 Acanthobothrium coronatum, P. J. van Beneden. 

 Dinobothrium septaria, P. J. van Beneden. 

 Diplobothrium simile, P. J. van Beneden. 

 « Abothrium rugosum, Goeze. 



Taenia sp. 



NEMATHELMINTHA 



ACANTHOCEPHALA. 



Echinorhynchus proteas, Westrumb. 

 „ acus, Rudolphi. 



„ agilis, Rudolphi. 



ADDITIONAL NOTES. 



(1) On a large Oestode from the intestines of a Common Porpoise. 



(2) On Nematodes observed in the viscera of a Common Porpoise. 



(3) On the injurious effects of parasites on fishes. 



The following are descriptions of the various species mentioned 

 above : — 



CRUSTACEA. 



Copepoda-Caligoida. 



Genus Pandarus, Leach (1816). 



In a previous paper* I gave a description and figures of Pandarus 

 bicolor, Leach. These specimens had been obtained from the Tope, Galeus 

 canis, Rondel. I have now to record the same kind of parasite from the 

 Picked Dog-fish, Squalus aca?ithias, Linn. A considerable number of 

 these fishes, captured off the West of Scotland and landed at the Fish 

 Market at Aberdeen in March of this year (1908), were examined at the 

 Laboratory at the Bay of Nigg. On these Dog-fishes quite a number 

 of Pandarus bicolor were observed ; they resembled those previously 

 described in form and colour. Figure 19, Plate III., represents one of the 

 specimens. The cephalon is ornamented by deep chocolate-brown pigment, 

 as shown in the drawing ; the middle plates are also coloured, but not so 

 deeply. The body seen from above is elongated and somewhat eliptical 

 in outline, but flat when seen from the side. Among the specimens of 

 normal form and colour was one that differed from the others in both 

 characters, but especially in colour. This specimen is represented by figure 

 18 on the same plate. This form resembles in some respects a species 

 described in 1888 by Lay under the name of Pandarus sinuatus, and to 

 that species I was at first inclined to ascribe it. Probably, however, it 



* Eighteenth Annual Report of the Fishery Board for Scotland, Part III., p. 157, 

 PI. VI., figs. 33-38 (1900). 



