of the Fishery Board for Scotland. ho 
drawing shows the anterior portion, including the head, of the specimen. 
The entire worm may reach a length of one or even two feet. Bb. 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 punctatus, Rudolphi. Pl. V., fig. 3. 
1808. Bothriocephalus punctatus, Rud., Entoz. Hist. Nat., 
vol. 111., p. 90. 
1858. Dibothrium punctatum, Dies., Syst. Helminth., vol. 1., 
p. 593. 
The specimen of B. punctatus 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. punctatus 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 Méditerranée.’ 
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. Johnstou 
describes two forms of L. punctatus, 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 nicrocephalus (Rudolphi). Pl. V., fig. 5; Plate VLI., 
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. 
+ Les Poissons des cotes de Belgique, p. 73. 
eae on Cestode parasites of fishes, Proc. U. S. National Museum, vol. xx., 
p. ; 
§ Report for 1905 on the Lancashire Sea-Fisheries Laboratory (1906), p. 152. 
