South American Rotifera. By J. Murray. 233 



Frenzel, 1891 {10), gives a list of nine genera from Argentina, 

 but names no species. 



Lagerheim, 1892 (i^), has a note of Pldlodina roseola, or a 

 related species, observed among red snow in Ecuador. 



Wierzejski, 1892 {oO), notes eiglit species for Argentina. 



Zelinka, 1891 {31), has meagre descriptions of three new 

 Bdelloids from Brazil. 



Daday has three papers on South American Eotifera. In 1902 

 (•5), he records nine species for Chile, and (6'), fourteen species for 

 Patagonia; and in 1905 (7), eighty-two species for Paraguay, in 

 the most important work on the subject up to the present time. 



Lastly, I have noted in 1907 {19), thirteen species for British 

 Guiana, and in 1913 {^li), seventy-eight species for Bolivia and 

 Peru. 



Order BDELLOIDA. 



Ehrenberg's South American Bdelloids are three — Callidma 

 elegans (?) at Cape Horn ; C. rediviva Cape Horn, Chile, British 

 Guiana, and Venezuela ; C, megalodon Yeragua. I have been 

 unable to trace the description of the last species ; the other records 

 are worthless. 



Schmarda has four South American species — R. vulgaris, found 

 at Mendoza, P. roseola in Chile, P. erytlirophthahna in Columbia, 

 and the very remarkable P. setifera, which has a number of setae 

 at the base of the foot, and is figured with a jaw quite unlike that 

 of a typical Bdelloid. He found it at Quito. 



No additions to the South American Bdelloid fauna were made 

 till Zelinka described his three new species — Callidina Mulleri, 

 C, holzinge7%, and C. lejeunix, with very insufficient detail, giving 

 almost no distinguishing characters except the colours of different 

 parts and the features of the jaws. These are forever unrecogniz- 

 able, 



Daday notes no Bdelloids except in the paper on Paraguay, in 

 which we find P. roseola, R. vulgaris, R. macroceros, R. macrurus, 

 R. tardus, R. neptunius {Actinurus). 



In 1907 I record thirteen species for British Guiana, all at that 

 time additions to the South American fauna, with two new species, 

 Callidina speciosa and C. tripus. 



In 1913 I give a list of thirty-seven species found in Bolivia 

 and Peru, twenty-four being first records for South America. 



The full list of South American Bdelloids, wdth their distribu- 

 tion through the various countries, will be given in the last section 

 of this paper. 



There are here recorded forty-three species : thirty-two for 

 Brazil, ten for Chile, and ten for Argentina. Sixteen of the species 

 are new records for South America. There are two new species : 

 Philodina americana and Habrotrocha cuneata. 



