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Three New Rotifers. 

 By John Hood, F.R.M.S. 

 Communicated hy C. F. Rousselet, F.R.M.S. 

 {Eead March 17th, 1S93.) 



Floscularia sjpinata^ n. sp., PI. XII., Fig. 1. 



Specific Characters. — Corona bearing five lobes, broad wifcliout 

 knobs ; one large dorsal lobe, two smaller ventral lobes, and two 

 very small ones between the dorsal and ventral. The lobes 

 bear long stiff setge on their summits, and, in addition, short 

 spines stand out from the margin of the coronal cup round its 

 entire circumference, but not very close together. 



The last named is a unique character among the Floscules, 

 which distinguishes it at once from all other known forms. In 

 general shape F. sjpmata resembles F. campanulata and F. 

 amhigua, but is not so widely expanded, and the lobes point 

 more upwards. The foot is long and stout, with a short 

 peduncle. The internal anatomy is that of othei' Floscales, and 

 does not call for any remarks. 



I first found a single specimen in 1886, in a marsh pool near 

 Loch Lundie, on Sphagnum, but could find no more until the 

 spring of 1890, when I obtained a few in a ditch on Tents Muir, 

 and again on Sphagnum from Loch Stormont. It is of large 

 size, measuring -^\ to g-V^ii-^ ^^^ i^ a greedy feeder, living on 

 Infusoria and even small Rotifers. Habitat : Lakes and pools 

 in Scotland. 



Folyarthra aptera, n. sp., PI. XII., Fig. 2. 



Specific Characters, — Body a transparent sac without foot ; 

 skin very thin and flexible, especially posteriorly ; corona 

 transverse ; ciliary wreath marginal and single ; eye large, 

 single and occipital; mastax large and pear-shaped; trophi 

 forcipate. The corona furnished on dorsal side with two broad, 

 flat, fleshy prominences surmounted by a brush of stiff setae, 

 and ventrally two long single styles, wide apart. Dorsal 

 antenna situated low down in the middle of the back. Lateral 

 skipping spines w^holly wanting. 



JouRN. Q. M. C, Series IL, No. 38. 20 



