THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[SECOND SERIES.] 

 No. 22. OCTOBER 1849. 



XXIV. — Description of two new species of Floscularia, with 

 remarks. By W. Murray Dobie, M.D., F.B.S.E., Member 

 of the Royal Medical and Clinical Societies of Edinburgh. 



[With a Plate.] 



• 



While examining various Rotifera in April this year (1849), 

 I met with two Floscularias which differ essentially from any 

 hitherto described. I propose in the present paper to charac- 

 terize and describe briefly these two species, to which the plate 

 has reference, and accompany the description with a few general 

 remarks. 



Floscularia campanulata (mihi). PI. VI. fig. 3. 



Sp. Char. Case diaphanous. Rotatory organ furnished with five 

 flattened lobes fringed with very long cilia. Body ovate, with- 

 out proboscis. Tail long and terminating abruptly in a trans- 

 parent filament spread out into a kind of sucker at the point 

 of attachment. PI. VI. fig. 1. 



Length ^ in. when extended. Egg with two red eye-spots, 

 contained in a large ovary. 



Hab. Boggy Park pond, 8| miles from Chester. Found on 

 Ceratophyllum and Confervse. 



Floscularia cornuta (mihi). Plate VI. fig. 4. 



Sp. Char. Case short, diaphanous, and not very distinct. Rota- 

 tory organ furnished with five rounded lobes surrounded with 

 extremely long and delicate cilia. A short, narrow, non-ciliated, 

 flexible process (cornu) is attached to the outside of one of 

 the lobes. Egg with two red eye-spots. Young animal with 

 vibratile cilia on head and rapidly locomotive. 



Length fa in. when extended. 

 Hab. Boggy Park pond. Found on Ceratophyllum. 

 Ann. &$ Mag. N. Hist. Ser. 2. Vol. iv. IG 



