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, 8i 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 ^'^ in. when extended. 

 Hab. Boggy Park pond. Found on Ceratophyllum. 

 Ann. ^ Mag, N. Hist. Ser. 2. Vol. iv. IG 



