Dr. O'Bryen Bellingham on Irish Entozoa. 319 



^ , , , f Small intestine of pochard {FuU- 



3. Tcenia lanceolata | gulaferina). 



r Tania cucumerina f Small intestine of dog {Cams fa- 



\ cateniformis {Verm.) \ miliaris). 



r rr. '^1- 7,-* f Intestlne of thiec-spined sticldcbaclc ( CfW- 



5. Tcemajilicolhs* .. | terosteus aculeatus). 



G. nasiita f . . . . Intestine of blue titmouse {Parus caruleus). 



h. Rostellatce ; capitis rostello rctractili inermi. 



^ ^ . , , f Small intestine of curlew {Nu7nenius ar- 



t . Tcenia sphcerophora. i^ ^^^^^^y 



, , r Small intestine of plover {Charadrius Hia- 



8. laevigata . . . . | ^.^^^^^y 



d. cyathiformis . Small intestine of swift {Ci/pselus Apus). 



f Small intestine of wild duck {Anas Boschas). 

 Small intestine of tame duck {Anas Boschas 



10. Tcenia infundihuU.] SmalT '^intestine of domestic fowl {Gallns 



for mis X 



domesticus) . 

 Small intestine of sparrow {Fringilla domes- 

 tied). 



* In the month of July 1839 I found several specimens of the 

 Taenia filicollis in the intestines of the Gasterosteus aculeatus ; they 

 lived for some time in water, and soon discharged an immense num- 

 ber of ova. In one specimen I saw the ova protruded from the mar- 

 ginal pore in a continuous stream and with great force. The ova are 

 very small, white and spherical, but visible to the naked eye. 



The oscula of the head are distinct ; when the animal is alive and 

 in motion, there is little distinction between the head and neck, and 

 this part is continually altering its shape. The articulations of the 

 body are tlimner at their margins than in the centre, which gives 

 this part a fringed appearance. The last articulation terminates in 

 a remarkable conical point. 



t Upon one occasion I found eight specimens of the Tcenia nasuta 

 in the intestinal canal near its termination of the common blue tit- 

 mouse {Varus cceruleus). The longest measured 2 inches in length. 

 In some of the specimens the head appeared to be j^rovided with a 

 rostellum ; hence the species should perhaps rather come under the 

 second division in Rudolphi's arrangement. The neck is distinct ; 

 the articulations are as described by Rudolphi. 



X The Tcenia infundibuUformis from the small intestine of the wild 

 duck {Anas Boschas) is about an inch in length ; the head has some- 

 what a different shape when recent from what it has after lying in 

 spirits of wine ; it is triangular, the oscula being elongated and" giving 

 it somewhat the appearance of a Bothriocephalus. The neck is very 

 short ; the rostellum cylindrical, as long as the head and neck toge- 

 ther, obtuse, and nearly double their thickness at its extremity. The 

 rostellum of several, after lying in spirits of wine, became much con- 

 tracted. 



