South Americwfi Rotifera. By J. Murray. 245 



Stephanops tenellus Bryce (f^). 



This lively little animal continues to be generally overlooked, 

 no doubt on account of its small size, vivacious movements, and 

 general resemblance to a ciliate Infusorian. It is really widely 

 distributed. 



Habitat. — Among moss from trees in the Zoo, Kio de Janeiro. 



Biplax trigona Gosse. 



In both fresh and brackish ponds, Eio de Janeiro ; identified 

 by Mr. Eousselet. 



In the same ponds I found other kinds of Diplax, differing in 

 general form and length of toes from any of the recognized species, 

 but I failed to secure specimens. 



Bibliography. 



1. Bryce, D. — Further Notes on Macrotrachelous Call idin». Jouru. Quekett 



Micr. Club, Dec. 1894, pp. 436-55. 



2. „ Non-marine Fauna of Spitsbergen: Eotifera. Proc. Zool. 



Soc. Lond., 1897. 



3. „ A New Classification of the Bdelloid Eotifera. Joum. 



Quekett Micr. Club, Nov. 1910, pp. 61-92. 



4. Certes, a. — Mission Scient. du Cap Horn, Paris 1889, p. 47. 



5. Daday, E.— Microfauna of Chile. Termes. Fiiz., xxv. (1902) pp. 436-47. 



6. ,, Microfauna of Patagonia. Termts. Filz., xxv. (1902) pp. 



204-5. 



7. ,, Susswasser-Mikrofauna Paraguay's. Chun's Zoologica, xviii. 



1905. 



8. Ehrenberg, C. G. — Infusionsthierchen, 1838. 



9. ,, ,, Mikrogeologie, 1854. 



10. Frenzel, J. — Micro-fauua Argentiniens. Arch. Micr. Anat., xxxviii. 



(1891) pp 1-24. 



11. Hudson & Gosse. — The Piotifera, London, 1886. Supplement, 1889. 



12. Janson, 0. — Die Eotatorien-familie der Philodinseen, Marburg, 1893. 



13. Jennings, H. S. — Monograph of the Eattulidse. 1902. 



14. Lagerheim. — Die Schneeflora des Pichincha. Ber. Deutsch. Bot. Ges., x. 

 (1892) pp. 517-34. 



15. Murray, J. — A New Family, etc. Trans. Eoy. Soc. Ecliii., xli. (1905) 

 pp. 367-86. 



„ „ f^allidina veskidaris. Journ. Quekett Micr. Club, April 



1906, pp. 259-62. 

 „ „ Eotifera of the Scottish Lochs. Trans Eoy. Soc. Edin., 



xlv. (1906) pp. 151-91. 

 „ „ Eotifera of the Sikkim Himalaya. Journ. E. Micr. Soc, 



1906, pp 637-44. 

 „ „ Some South American Eotifera. Amer. Nat., xli. (1907) 



pp. 97-101. 

 „ „ Bdelloida of Tropical Africa. Journ. Eoy. Micr. Soc, 1911. 

 „ „ Australian Eotifera. Journ. Eoy. Micr. Soc, 1911, pp. 



164-74. 

 Jitne 18th, 191o S 



