234 



Transactions of the Society. 



With these additions the Bdelloids of South America number 

 about seventy species, but a number of them are of doubtful value. 

 Some critical notes will be made when treating of distribution. 



The most interesting additions to the list of South American 

 Bdelloids are : Pliilodina americana, Callidina pacifica, C. vesicu- 

 laris, Mniohia mirahilis, HahrotrocJia caudata, H. eremita, H. 

 acornis, H.fusca, H. cicneata. Leaving aside the two new species, 

 the others have been among the rarest of Eotifers, most of them 

 being known from one locality only, in more ihan one case only a 

 single specimen having been found. 



LIST OF SPECIES COLLECTED. 



New Records for South America are indicated by an asterisk. 



In Brazil. 



Pliilodina megalotrocha Ehr. 



P. acuticornis Murray. 

 *P. brevipes Murray. 



P. rugosa Bryce. 

 *P. plena Bryce. 



P. vorax Janson. 



Pleuretra hrycei Weber. 



P. humerosa Murray. 



P. triangularis Murray. 



Callidina habita Bryce. 



G.formosa Murray. 



G. plicata Bryce. 

 *C. pad flea Murray. 



C. papulosa Thomp. 



C. multispinosa Thorap. 

 * Mniohia tetraodon Ehr. 



Rotifer vulgaris Schrank. 



B. tardigradus Ehr. 



R. macroceros Gosse. 

 ^R. trisecatus Weber. 



R longirostris Janson. 



Hahrotroclia angusticollis Murray. 



H. perforata Murray. 

 *H. caudata Murray. 

 ^H. acornis Murray. 



H. loiigiceps Murray. 



H. constricta Duj. 

 * H.fusca Bryce. 

 *H. Guneata sp. n. 



H. aspera Bryce. 



Adineta vaga Davis. 



A. longicornis Murray. 



In Chile. 



Pliilodina erythrophthalma Ehr. * Mniohia mirahilis Murray. 

 P. hrevipes Murray. *M. incrassata Murray. 



*P. flaviceps Bryce. Rotifer vulgaris Schrank. 



Pleuretra triangularis Murray. HahrotrocJia lata Bryce. 

 Dissotrocha macrostyla Ehr. ^ Seepanotroclia ruhra Bryce. 



In Argentina. 



Philodina rugosa Bryce. 

 P. plena Bryce. 

 *P. americana sp. n. 

 Pleuretra humerosa Murray. 

 P. triangularis Murray. 



Callidina papillosa Thomp. 



G. midtispiiiosa Thomp. 

 *C. vesicularis Murray. 

 ^ Hahrotrocha eremita Bryce. 



Adineta harhata Janson. 



