320 Dr. O'Bryen Bellingham on Irish Entozoa. 



j", rp • .• * /Small intestine of swan (Cygnus Olor). 



11* J. (EYllCt S611Q6VQ, \- c* _n • , _«• <» / a * \ 



y [ bmall intestine of goose (Anas Anser). 



, n j . i i ] Small intestine of redbreast (Sylvia Rube- 



12. platycephala. < tv v ' 



f Small intestine of thrush (Turdus musicus). 



- a , . J Small intestine of blackbird (Turdus Me- 

 ld. angulata • • ^ / \ 



Small intestine of fieldfare (Turdus pilaris). 



"Small intestine of pochard (Fuligula ferina). 



, A j J Small intestine of scaup-duck (Fuligula Ma- 



14 . louts ....< rUa y 



L Intestine of tufted duck (Fuligula cristata). 



f Small intestine of wild swan (Cygnus ferus). 

 15. cequabilis . . 2 Small intestine of widgeon (Mareca Pene- 



L lope). 



rSmall intestine of tufted duck (Fuligula 

 , ft . J cristata). 



lb. tenuirostris .< gmall intestine of goosander (Mer^ws Mer- 



L g anser). 

 . L „., f Small and large intestine of ruff (Tringa 



' ' * " * \ pugnax). 



C Teenia elliptica f "1 



18.< cateniformis > Small intestine of cat (Felis maniculata). 



L (Pennant) . . J 



19. Ttema gracilis .... Large intestine of wild duck (A nas Boschas). 



20. ' pusilla } I . . Small intestine of mouse (Mus Musculus). 



2 1 . farciminalis . Small intestine of starling (Sturnus vulgaris) . 



* In the specimens of the Tcenia 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. 



f The Taenia 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 from 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. 



