of the Fishery Board for Scotland. 



79 



drawing shows the anterior portion, including the head, of the specimen. 

 The entire worm may reach a length of one or even two feet. B. probos- 

 cideus is one of the most common species of the genus, and is of frequent 

 occurrence in Trout and Salmon, and, as Dr. Cobbold remarks, when the 

 parasite is present in large numbers it cannot fail to prove injurious to 

 the bearer.* 



Bothriocephalus pundatus, Rudolphi. PI. V., fig. 3. 



1808. Bothriocephalus pundatus, Rud., Entoz. Hist. Nat., 

 vol. iii., p. 50. 



1858. Dibothrium punctatum, Dies., Syst Helminth., vol. i., 

 p. 593. 



The specimen of B. pundatus represented by the drawing 

 was obtained in the intestine of a common Eel, Anguilla vulgaris, 

 Leach, captured at the mouth of the River Dee at Aberdeen in July 1905. 

 The whole specimen measured 235 millimeters in length, or fully nine 

 inches, but specimens double that length have been recorded. Only the 

 head and anterior part of the body are represented by the drawing. 

 In this species the head is elongated and narrow, and the articulations 

 (proglottides) are also long and narrow. This parasite appears to be 

 widely distributed, and common to a number of fishes. Professor Linton 

 also records what he regards as the same species from several of the fishes 

 frequenting the Atlantic coast of America, but the Eel does not appear 

 among the various hosts mentioned by Diesing, van Beneden, or Linton. 

 B. pundatus is found sometimes abundant in the Turbot, Rhombus 

 maximus. I found the stomach of a large and fine Turbot crowded with 

 them ; they formed a living mass, so inextricably mixed up together, that 

 it was almost impossible to separate one of the specimens without break- 

 ing. They extended from the stomach down into the intestines. J. P 

 van Beneden records this parasite as abundant in the Turbot, and states 

 that it "est tout aussi abondant dans le Turbot de la Mediterranee."t 

 Linton records the parasite from the Sand Flounder, Bothus maculatus, 

 from Woods Holl, Massachusetts ; one of the longest specimens, preserved 

 in alcohol, measured 223 millimeters; a considerable number of specimens 

 were also found in the stomachs of Sea Raven, Hemitripterus americanus, 

 the largest of which measured about 300 millimeters.* In report 

 No. XIV. on the Lancashire Sea-Fisheries Laboratory, Mr. J. J. Johnston 

 describes two forms of B. pundatus, one of which he finds in Turbot 

 captured in the Irish Sea, and the other, which is more slender, in the 

 Brill. He has counted over sixty specimens in a single Turbot.§ 



Genus Ancistrocephalus, Monticelli (1890). 



Ancistrocephalus microcephalus (Rudolphi). PI. V., fig. 5 ; Plate VI., 

 fig. 2. 



1819. Bothriocephalus microcephalus, Rud. Entozoorum 



Synopsis, pp. 138, 473. 

 1850. Dibothrium microcephalum, Dies., loc. cit., vol. iii., 



p. 592. 



This species was obtained from a Short Sunfish, Orthagoriscus mola, 

 landed at the Aberdeen Fish Market in September 1899. The worms 



* Parasites, a Treatise on the Entozoa of man and animals, p. 468. 

 t Les Poissons des cotes de Belgique, p. 73. 



t Notes on Cestode parasites of fishes, Proc. U. S. National Museum, vol. xx. , 

 p. 430. 



§ Report for 1905 on the Lancashire Sea-Fisheries Laboratory (1906), p. 152. 



