MINUTE ANATOMY OF LIMNOOODIUM. 539 



Some Further Contributions to our Knowledge 

 of the Minute Anatomy of Limnocodium. 



By 



R. T. Ouiitlier, B.A., 



Lecturer of Magdalen College, Oxford. 



With Plate 40. 



While engaged in a study of the anatomy of Limnocnida 

 tanganjicse I was naturally rather desirous of making a com- 

 parison between the structural features of Limnocnida and 

 those of the first-described fresh-water medusa, Limnoco- 

 dium Sowerbii, in order to attempt to ascertain if the two 

 forms possessed any similar modifications which might possibly 

 be brought into relation with their life in fresh water. 



For the furtherance of this object Professor Ray Lankester 

 very kindly placed all such preserved material of Limnocodium 

 as existed in the Department of Comparative Anatomy of 

 the Oxford Museum at my disposal. I take this opportunity 

 of thanking Professor Ray Lankester for this and all other 

 assistance he afforded me during the progress of my work, 

 which was carried on in the new Laboratory of Comparative 

 Anatomy at Oxford. I also wish to express my deep sense of 

 gratitude to the President and Fellows of Magdalen College 

 for enal)ling me to continue my studies in Oxford by prolong- 

 ing my Demyship at that College. 



Hitherto I have, unfortunately, not had an opportunity of 

 examining any fresh specimens of Limnocodium. The material 

 which was best suited for histological examination had been 

 killed in osmic acid some years previously, but was neverthe- 



