638 MR. F. E. BEDDARD ON 



upon the anatomy of 0. tetragonoceph,cda, which confirm my 

 opinion that the species examined by myself is not the same. In 

 particvilar, I i-ef er to the much more complicated excretory vessels, 

 which are illustrated by a text-figure *. 



The second species inhabiting the gut of Tamandua tetradactyla 

 is Oochoristica wageneri of Janicki, who had, however, only a 

 single not very well-preserved example to woi-k upon. Unfortun- 

 ately one very important point, as I think it, viz., the condition 

 of the neck, was not ascertained, and, as I vinderstand, could not 

 be ascertained by Janicki from the imperfection of his specimen. 

 There are some other points in which my specimens were not 

 identical with that described bj^ Janicki. He described i-ipe 

 proglottides as longer than unripe ones. But this is not always 

 the case in my specimens, since I have found quite early in the 

 strobila long segments. But the examination of other examples 

 might have led Janicki to alter this statement. For, as I have 

 myself shown, there is some variation in the form of the pro- 

 glottides in different regions of the bod}^ and in different examples. 

 I have noted in describing the excretory tubes certain differences 

 from the apparently regulaily ari"anged six tubes found in 0. wa- 

 generi ; but here, again, it is possible that the examination of more 

 material would have shown that these differences do not exist. 



On the other hand, I am disposed to see differences in the uterus 

 in the t\Yo forms. Janicki describes that oi-gan in 0. wageneri 

 as an irregular sac lying anteriorly in the segment and ex- 

 tending back as far as or beyond the ovaries, and gives a figure 

 showing this arrangement. The uterus in my examples was much 

 more irregular, and here and there, as I have described, wei-e 

 quite tubular portions of it. 



Even in the very last segment of the body, which might be 

 supposed to be fully mature, the uterus had by no means quite 

 disappeared in all specimens, although the majority of the eggs 

 were strewn through the parenchyma, as Janicki states to be the 

 case in his species, and as is characteristic of the genus. In other 

 respects I can find no differences between the facts as I read 

 them and Janicki's descriptions. I do not, therefore, from a con- 

 sideration of all the facts, come to the conclusion that the present 

 species is certainly distinct from 0. wageneri, biat that equally 

 it is not certainly identical with it. Since we know that two 

 undoubtedly different species are found in the Edentate Tamand^m, 

 there is no cbpriori reason against the existence therein of a third 

 or even of more species of this genus. I prefer, therefore, in view 

 of these doubts, to give no name to the worm which is here 

 described. 



Bertiella cercopitheci, sp. n. 



An example of the Green Cercopitheque, Cercopithecus calli- 

 trichi(,s, which died in the Society's Gardens in February 1911, 

 contained two examples of a Tapeworm, which were found, 



* Loc, cit. p. 535j fig, 5. 



