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 Inermicajjsifer with more or less certainty and of whose 

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

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

 " Tcenia sjjatulcc" 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 (" Dei- Cirrusbeutel nimmt 1/7 

 des Querdurchmessers ein ") and the testes are scattered through 

 the greater part of the segment. Tcenia ghondhorensis of 

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

 shows that it is not identical with my species. 



From /, criticics 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. 



/. j9«^e9isfecAe?'i of Setti differs from my species by its few 

 proglottids (not more than 80) ; otherwise it seems to pi'esent 

 more resemblances to my species than any other form except 

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



To a species termed by Nassonov Anoplocephala hyracis Rud. 

 var, hepatica, and by Janicki " Inermicapsifer 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., hreadth 2 mjin.; number of proglottids 200. 

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

 long as vnde. Genital pores unilateral near to posterior end of 

 proglottids, not borne xipon a conspicuoics j^i^ojection. Testes in 

 two separate groups, one on pore side and one on opposite side of 

 proglottid. Vas deferens forms a netvjorh ; a large vesictda 

 seminalis present ; cirrtis sac small, filled with slightly coiled and 

 dilated sperin-duct. Uterus short and not persistent. Many 

 paruterine organs, each containing several embryos. 



Hab. Procavia capensis. 



On Species of the Genus Hyracotsenia, 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 



