NEW TAPEWORMS FROM THE HYRAX. 593 



SO nearly to the apex of the scolex, nor are they so coiled in that 

 region as in my species. On the other hand, the two species 

 agree in the posterior position of the genital pores and the 

 separation of the testes into two masses. There may be a 

 difference also in the lack of an excretory network in /. settii, 

 of the existence of which Janicki is not certain. 



There remain certain less-known species referred by Janicki to 

 the genus Tnermiccqjsifer with more or less certainty and of whose 

 characters he gives some account. Of these, " Tcenia paronai " 

 cannot be identical with my species, since it possesses hooks; 

 " Tcenia spatida" of von Linstow is too imperfectly described to 

 admit of its definite inclusion in the genus Inermicapsifer. 

 It cannot, however, be identical with my species, since the cirrus 

 sac is apparently much larger (" Der Cirrusbeutel nimmt 1/7 

 des Quei'durchmessers ein ") and the testes are scattered through 

 the greater part of the segment. Tcenia ghondhorensis of 

 Klaptocz is veiy imperfectly known, but a pit upon the scolex 

 shows that it is not identical with my species. 



From /. criticus of Pagenstecher (which is perhaps identical 

 with another species described below), the present species can 

 be distinguished by the grouping of the testes into two masses. 



/. j)age7hstecheri of Setti differs from my species by its few 

 proglottids (not more than 80) ; otherwise it seems to present 

 more resemblances to my species than any other form except 

 I. settii by virtue of the posterior position of the genital pores. 



To a species termed by Nassonov Anoplocephcda hyracis Rud. 

 var. hepatioa, and by Janicki " Inerinicapsifer spec. ? " I shall 

 recur in considering some worms from the gall-bladder of Procavia 

 capensis. In the meantime my own species may be thus defined 

 and named : — 



Inermicapsifer capensis, sp. n. 



Length about 95 mm., breadth 2 mm.; nuTnber of proglottids 200. 

 Scolex wider than the neck. Proglottids at end of body nearly as 

 long as wide. Genital pores unilateral near to posterior etui of 

 proglottids, not borne xipon a conspicuous projection. Testes in 

 two sep)arate groujp>s, one on pore side and one on opposite side of 

 proglottid. Vas deferens forms a network ; a large vesicida 

 seminalis present ; cirrus sac small, filed with slightly coiled and 

 dilated spe7'm-duct. Uterus short and not jjersistent. Many 

 paruterine organs, each containing several embryos. 



Hab. Procavia capensis. 



On Species of the Genus Hyracotaenia, gen. nov. 



Along with the numerous examples of the tapeworm which I 

 have described here as Inermicapsifer capensis, I found in the gut 

 of the Hyrax two complete or nearly complete examples of a tape- 

 worm which has quite a different external appearance, and whose 



