204 Dr. F. E. Beddard on a 
In amy case the tentacles of this worm are numerous and 
torn circle towards the apex of the scolex above the four 
suckers. 
In the worm which I here describe the tentacles are 
closely associated with the suckers and appear to protrude 
from them, one from each. As a matter of fact, I only saw 
in the living worm two tentacles, each belonging to a 
separate sucker; it is thus only an inference that each 
sucker has its tentacle, as is the case with Schistometra 
togata, though here there are two to each sucker. The 
tentacles are very mobile and at times totally disappear with 
lightning rapidity. The worm itself was obtained from the 
Guinea-fowl, Numida mitrata, and I found only one 
example in company with some smaller worms apparently 
belonging to the genus Davainea. 
It is a small and slender worm of rather more than an 
inch in length and 1mm. in breadth at the widest point, 
which is near the posterior end of the body. I could see no 
traces of hooks nor a rostellum. During life the suckers 
were much extended and mobile, as was also that part of the 
scolex in which they are implanted. After preservation the 
scolex was of the same diameter as the ensuing strobila, 
The scolex was rather injured by the pressure of the cover- 
glass in examination of the living worm. But I recognised 
at the anterior end a single large sucker-like ring, which 
seems to me to be not one of the four usual suckers—for there 
was no trace of the others,— but the mouth of an involution 
containing the anterior end of the worm, suckers and all. 
That there is nothing impossible in this view is obvious from 
the state of affairs in many larval Cestodes, as well as from 
the partial power of retracting the scolex in some adult 
forms. But the material in my hands does not allow of a 
positive statement. The slide remains for the examination 
of others. It would appear that the character of the 
tentacles and their position in relation to the suckers in 
this new form are quite like those exhibited by a worm 
recently described by Fuhrmann* as Chapmania tapica 
(= Ldiogenes tapica of Clerc)+. That worm, however, pos- 
sesses a rostellum with hooks, and has internal characters 
which forbid its identification with that described here. 
Moreover, Skriabin f has lately asserted that the scolex (and 
* Swedish Zool. Exp. Egypt, pt. ii. 1909, Cestodes, p, 19, 
+ Centralbl. f. Bakt, u. Paras, xlii. p. 722. 
} Ibid. \xxiii. 1914, p. 899. 
