48 Dr. H. Krabbe on the Cestoid Worms of the Bustard. 



Otidis by Werner*, who had obtained his specimens from 

 Leske. He noticed the difficulty with which it is extricated, 

 from the masses into which it readily twists itself together, 

 and of which he gave a figure. 



Rudolphif also found it in great numbers in Otis tarda at 

 Greifswald, and referred it to the Tmnioi with an unarmed 

 proboscis. Bremser J and Nitzsch § gave figures of it. Du- 

 jardinll doubted whether it was destitute of hooks on the 

 proboscis. 



Of this tapeworm there are specimens from Abildgaard's 

 time in the collection of the Agricultural College. I have also 

 found it in great numbers in a bustard from Jylland, which 

 died (in 1860) in Kjjerbolling's Zoological Garden ; and it 

 seems in general to occur plentifully in this bird. On exa- 

 mining the head, I found on the retracted proboscis fourteen 

 unidentate booklets of 0*024-0'026 millim. in length, with a 

 proportionally very long shaft. Tcenia stylosa, T. fringilla- 

 rum^ and several hitherto undescribed species of tapeworms in 

 Scolopax rusticula and Cursorius isabellinus have booklets of 

 a similar form. In the joints the oval strongly refractive 

 organ (cirrus-vesicle?), which is also reproduced in Bloch's 

 figures, is particularly striking. The generative organs were 

 nowhere protruded ; but the sexual orifices are undoubtedly 

 uniserial, although not very large. No ova occurred. 



Together with this tapeworm, Bloch found in Otis tarda 

 a second species of Tcenia, which he likewise figured. He 

 called it Tcenia articulis conoideis, and stated that he had 

 found it in many kinds of birds, among others in several spe- 

 cies of ducks. This, however, has no very prominent pecu- 

 liarities, and might consequently be easily confounded with 

 other tapeworms. Rudolphi referred it to T. infundihuU- 

 for mis, Goeze, and likewise found it in bustards. But the 

 worms in question, as preserved in the museum at Berlin, are, 

 as I have had the opportunity of convincing myself, different 

 from the T. infundibidiformis which occurs in the common 

 fowl, and have uniserial sexual orifices, like T. villosa. As 

 neither heads nor joints with ova were to be found, I am not at 

 present in a position to give a more complete character of it. In 



* Vermium intestinalium, praesertim Taeniae humanae brevis expositio 

 (Lipsiae, 1782), p. 54, tab. 3. figs. 58-63. 



t Entozoorum sive vermium intestinalium historia naturalis, vol. ii. 

 part 2 (Amstelodami, 1810), p. 126, 



X Icones Helminthum (Viennae, 1824), tab. 15. figs. 9-13. 



§ Schmalz, xix. tabulae anatomiam Entozoorum illustrante.s (Dresdae 

 et Lipsi«, 1831), tab. 3. figs. 1-6. 



II Hist. Nat. des Helminthes (Paris, 1845), p. 603. 



