D. BRYCE ON A NEW CLASSIFICATION OF THE BDELLOID ROTIFEEA. 87 



known, and which in certain positions might appear to be 

 crossed hooks if imperfectly seen. 



8. Callidina 'pigra Gosse is probably Hahrotrocha constrictco 

 (Dujardin). 



9. Callidina angusta Bryce. I had proposed to include this 

 species in the doubtful list, but whilst these notes were in 

 preparation I have been informed by Mr. Murray that he has 

 recently found specimens which agree fairly well with the 

 details noted in my description, although this could perhaps 

 be amplified with advantage. Judging from his specimens ho 

 thought that the species seemed to be related to Callidina hahita 

 Brvce. 



10. Philodina parasitica Marchoux is probably a distinct 

 species, but the description is very insufficient, and the specific 

 name has been already appropriated to Giglioli's species, which 

 would possibly prove to be a congener. 



11. Callidina ornata, Rotifer quadrioculatus, Philodina ohesa^ 

 and P. decwvicornis, all described by Murray, are now regarded 

 by him as doubtful, pending further examination. 



BIBLIOGEAPHY. 



Restricted to w^orks dealing with the classification of the 

 Bdelloida, or containing original descriptions or supplementary 

 details of species. 



1. 1803. ScHRANK : Fauna boica, 111., 2, p. 110. 



2. 1830. G. C. Ehrenberg : Beitrage zur Kenntniss der 



Organismen der Infusorien, [etc. Abhand. der 

 Berliner Akad. der Wiss. 



3. 1831. G. C. Ehrenberg: tJber die Entwickelung und 



Lebensdauer der Infusionsthiere, Abhand. der 

 Berliner Akad. der Wiss. 



4. 1838. G. C. Ehrenberg : Die Infusionsthierchen als voll- 



kommene Organismen. 



5. 1840. G. C. Ehrenberg : Note in Verhand. der Berliner 



Akad. der Wiss., p. 197. 



6. 1841. M. F. Dujardin: Histoire naturelle des Zoophytes; 



Infnsoires in, Suites a Buffon. 

 JouRN. Q. M. C., Series II. No. 67. 7 



