204 Dr. F. E. Beddaitl on a 



In any case the tentacles of this Morm arc numerous and 

 rorni a 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, 1 only saw 

 in the living worm two tentacles, each belonging to a 

 si'parate sucker; it is thus only an inference that each 

 sucker has its tentacle, as is the case with Schistumctra 

 tuyata, though here there are two to each sucker. The 

 tentacles are very mobile and at times totally disa])pear with 

 lightning rapidity. The worm itself was oljtained from the 

 (Jninea-fowl, Nuniida mitruta, and I found only one 

 example in company \^■ith 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 1 mm. 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 exan)ination of the living worm. But I recogni>ed 

 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. 

 Tliat there is nothing impossible in this view is obvious from 

 the state of affairs in many larval Cestodes, as well aa from 

 the partial power of retracting the scolex in some adult 

 forms. But the material in my hands does not allow of a 

 j)(»sitive 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 C.'/iaj/niu/iia tapica 

 (^= Jdiof/enes tapica oi C\crc)ii. That worm, however, pos- 

 sesses a rostellum with hooks, and lias internal characters 

 which forbid its identification with that described lierc. 

 Moreover, Skriabin J has lately asserted that the scolex (and 



• Swedisli Zool. Exp. Egypt, pt. iii. 1909, Cestodes, p. 19, 

 t C'lMilr.iU)!. f. Hakt. u. Tarns, xlii. p. 7L'l>. 



1 j/.ij. ixxiii. I1M4. p. ;;y;». 



