330 Dr. O'Bryeu Belliu^-liam on Irish Entozoa 



Teen! a setigera 



11. 

 12. 



13. 



14. 

 15. 



16. 



17. 

 18. 



r Small intestine of swan (Cygnus Olor). 



\ Small intestine of goose (Anas Anser). 



, , 7 7 f Small intestine of redbreast (Sylvia Rube- 

 platycephala. i^ ^^^^^y 



r Small intestine of thrush (Turdus mvsicus). 

 \ Small intestine of blackbird (Turdus He- 

 's rula). 



(^ Small intestine of fieldfare (Turdvs pilaris). 

 r Small intestine of pochard(Fuligulaferina). 

 J Small intestine of scaup-duck (Fuligula Ma- 

 I 1-ila). 



(^Intestine of tufted duck (Fuligula cristata). 

 C Small intestine of wild swan (Cygnus ferus). 

 < Small intestine of w'idgeon (Mareca Pene- 

 L H^e). 



["Small intestine of tufted duck (Fuligula 

 J cristata). 



j Small intestine of goosander (Mergus Mer- 

 \^ ganser). 



j Small and large intestine of ruff (Tringa 

 \ pugnax). 



angulata 



hcvis 



ccquahilis 



tenuirostns 



Filum 



Tccnia elliptica f 



cateniformis 



(Pennant) . . 



19. Tcenia gracilis .... 



20. pusilla}l .. 



21. farciminalis . 



Small intestine of cat (Felis maniculata). 



Large intestine of wild dnck (Anas Boschas). 

 Small intestine of mouse (Mus Musculus). 

 Small intestine of starling (Sturnus vulgaris). 



* In the specimens of the Taenia setigera from the small intestines 

 of the goose (Anas Anser) which I have examined, the pyriform ros- 

 tellum sometimes projected, at others it did not. All the articula- 

 tions are very short, though Rudolphi describes those in the middle 

 of the body to be infundibuliform. 



t The Tcenia elliptica is common in the small intestines of the 

 domestic cat ; they are usually found towards the extremity of the 

 small intestine near the large. On some occasions I have found them 

 so firmly attached to the mucous membrane of the intestine by their 

 oscula that they could not be detached, but separated at the arti- 

 culations near the head. 



X This species, which has several of the characters of the Tcenia 

 pusilla, inhabits the small intestine of the mouse ; it is about an inch 

 and a half in length, dark-coloured when first removed fi'om the ani- 

 mal, becoming white after remaining in water. The rostellum is 

 short, the oscula distinct, head oval ; anterior articulations very short, 

 the next broader than long, the last oblong ; each anterior articula- 

 tion overlaps that next to it, which gives the joints the appearance 

 of being double and composed of a narrow and a broad portion. The 

 marginal pores are irregularly alternate, and lemnisci projected from 

 many of them. 



