found in Ireland. 



239 



head is somewhat projecting. Length about 2 in. Found 

 in the stomach of a codfish ; Nov. 1817. — ^4'scaris Lin. 

 /umbricoides Lin. Inhabits the smaller intestines of man. 

 — A. ttermicularis Lin. In the rectum of children, rarely 

 in that of adults. — Brachiella Cuv. salmonea. On a salmon 

 purchased in Belfast market. 



PARENCHYMATEUX. 



Trematbdes. 



Distoma Ttetz and Zed. hepaticum Lin. Common in the he- 

 patic vessels of the sheep. — Planaria Mull, stagnalis Mull. 

 In plenty in the peat holes at Cranmore. — P. fusca 

 Pallas. 



Tcenioides. 



Taenia Lin. vulgaris Lin. Common in the human intestines. 

 — T. solium Lin. Rather rarer than the preceding. There 

 are three other species in the museum of the Irish Col- 

 lege of Surgeons ; but I have not yet had time to examine 

 them. Temp. MSS. — Tetrantaris Temp. MSS. (Jg. 32.) 



Body soft, elongated, flat, obsoletely jointed; head oblongato- 

 quadrangular, and furnished with 4 rounded aculeated 

 tubercles (suckers ?). — T. Truttae. Found in the intestines 

 of a sea trout, which appeared to have been for some time 

 in bad health, as it was greatly emaciated, a, animal, 

 natural size ; b, magnified ; c, head magnified ; d, horizontal 

 view of the head ; e, sucker, highly magnified. Body lan- 

 ceolate, about three quarters of an inch long, and one quar- 

 ter broad when at rest ; but may be extended till it reach 

 nearly 3 in. The segmental marks appeared to be formed of 

 transverse wavy lines, scarcely depressed. At the extremity 

 of the head, which was flattened, were placed 4 nearly equi- 

 distant globular bodies, covered with curved aculei. The 

 animal has the power of advancing these bodies a little way, 

 when they seem to be supported on a neck of considerably 

 smaller dimensions. The animal was very retentive of life, 



