788 MR. A. H. GARROD ON PLAGIOTjENIA GIGANTEA. [Nov. 20, 



5. On the Tmiia of the Rhinoceros o£ the Simderbuuds 

 {Plagiotcenia gigantea, Peters). By A. H. Garrod, 

 M.A., F.R.S., Prosector to the Society. 



[Received October 1, 1877.] 



In 1856 ' Dr. Wm. Peters described a tapeworm which he found 

 ill au African Rhinoceros from Mossambique, whicli he named 

 Tc€7iia gigantea. 



In 18/0 ^ Dr. Murie described the adult proglottides of a tape- 

 worm passed by an Indian Rhinoceros {Rhinoceros unicornis) living 

 in the Society's Gardens at the time, which he named Tcenia 

 magna 1. 



In 1871 ' Dr. Peters communicated to the Society a Note on the 

 results of a comparison of his specimens of Tccnia gigantea with 

 Dr. Murie's description and figures of his Tcenia magna 1, show- 

 ing their identity, and suggesting the generic name Plagiotcenia for 

 the species. 



During this summer I have had the opportunity of eviscerating 

 a half-grown female of Shinoceros somhiicus, from the Sunderbunds, 

 which had been a little more than six months in tliis country. In the 

 commencement of the colon I found three tapeworms with their heads 

 (scoleces), together with several detached groups of proglottides ', 

 tiiese latter being quite undistinguishable from those figured by Dr. 

 Murie, in form as well as size. 



Dr. Peters has figured the scolex in his species, wliich is evidently 

 in a powerfully contracted condition, to which one of my three spe- 

 mens closely approaches. My other two specimens are not so, and, 

 as a result, differ so much in appearance that I subjoin a figure of 

 one of them. 



Scolex of Plagiotmnia gigantea, much enlarged ; superior and lateral view. 



Of the specimen here figured the breadth (after being kept in 

 alcohol) of the scolex, opposite the suckers, is 4 millimetres, whilst 

 the depth, to the lower of the two more strongly marked transverse 



' Monatsb. der Akad. der Wissensch. zu Berlin, 1856, p. 469. 

 ^ P. Z. S. 1870, p. (108. ^ P. Z. S. 1871, p. 14G. 



^ In his accouni (if )iis specimens Dr. Murie has nu)st curiously mistaken 

 the groups of proglottides (wliich he figures) for single segments. 



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