294 



Transactions of the Society. 



make it highly probable that it is anMmbata, and that Janson was 

 wrong in uniting with it Rotifer (Callidina) magnicalcarata 

 Parsons. 



ftotifer mento Anderson. Anderson's description and figures 



in to me to indicate no points of distinction from R. macroceros. 

 The tube-making habit appears to have caused the resemblance to 

 be overlooked. In Scotland I find R. macroceros usually inhabiting 

 lax tubes of flocculent material. 



/,'. vestitus Bailey. The figures and description indicate a 

 sufficiently strange animal, but they are not good enough to 

 inspire confidence or leave much hope of identifying it. 



Habrotrocha eremita (Bryce). Jenning's figure {21) shows that 

 the animal he observed is not eremita, which is remarkable for the 

 length of the pedicels bearing the disks. 



List of all Bdelloids recorded for North America. 



•a 

 5 

 5 



Philbdma citrina Ehr. 



P. crythroplithalma Ehr. . . 



P. roseola Ehr 



P. megalotrocha Ehr 



P. austnralis Murray 

 P. acuticornis Murray 

 P. nemoralis Bryce 



P. rugosa Bryce 



P. ubrax (Janson) 



P. ]>.■ nc | Bryce) 



*P. socialis M 



Pleuretnt alpium (Ehr.) 

 P. foumerosa (Murray) 



P. brycei (Weber) 



Dissotrocha aculeate. ( Khr.). . 

 D. macrostyla (Ehr.) . . 

 JD. pannosa (Bailey) 

 Callidina elegans Ehr. 



:• -rirn Ehr 



1 ■■ i '•' \, e 



C. plicata Bryce 



— "/V/i/ (Milne). 



Janson . . 

 ttosa (M ilne) . . 



i ialis Ki-11 



i !".v/ Murray 



p. n. . . . 



C. papillosa (Thomp.) . . 



I I ■ " W\ Sp. II. 



('. a» U • <•''" I Milne) 



C. ynnlns/niiDsii (Thomp.) . 



1 . ndrakti Richters . 



x 



X 

 X 

 X 

 X 

 X 

 X 



X 



X 

 X 



X 

 X 

 X 

 X 

 X 



X 

 X 

 X 

 X 

 X 

 X 

 X 



CO 



X 

 X 

 X 



X 



X 

 X 



X 



X 



Mniobia tetraodon (Ehr.) 

 M. magna (Plate) . . 



M. russeola (Zel.) 



a 

 a 



O 



X ; M. symbiotica (Zel.) 



| M. obtusicomis sp. n 



M. montium sp. n 



Rotifer vulgaris Schrank . . 

 j R. macrourus (Muller) 



R. macroceros Gosse . . 

 *R. mento Anderson 



R. elongatus Weber . . 



R. trisecahis Weber 



/,'. neptunius (Ehr.) 

 *R. vestitus Bailey . . . . 



II. tardigradus Ehr 



it. longirostris (Janson) 



Habrotrocha pusilla (Bryce) 

 *H. eremita (Bryce) 



H. auijustirolUs (Murray) . . 



H. crenata (Murray) 



H. pulchra (Murray) . . 



H. aspera (Bryce) 



H. const ricta (Duj.) . . . . 



If. microcephala (Murray) . . 



H. maculata sp. n 



Scephanotrocha rubra Bryce 



Ceratotrocha comigera (Bryce 



Adineta vaga (Davis) . . 



.(. gracilis Janson 



.1. barbata Janson 



A. longicornis Murray 



x 

 x 



X 

 X 

 X 

 X 



X 

 X 



X 

 X 

 X 

 X 

 X 

 X 

 X 



X 

 X 

 X 

 X 

 X 



-3 



a 



X 



X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 



X 

 X 



