FAUNA OF THE CHESS AND GADE. 459 



weed. When disturbed it withdrew itself into its casing, and 

 presented a compact rounded body, the end of which was 

 truncated, the setae having been neatly gathered together into 

 a compact brush projecting from the centre of the truncated 

 surface. Very soon afterwards the body would slowly expand 

 itself, the pedicel being at the same time straightened, and the 

 brush of setae would open out into series of tufts projecting from 

 the knobbed ends of the five thin lobes of the corona. These 

 knobbed ends were turned slightly outwards, and the whole 

 corona presented a striking resemblance to a little crown, fully 

 justifying its scientific name. When fully expanded in this way, 

 the Eotifer was a beautiful microscopic object, its beauty being 

 enhanced by the bright contrast of colours, green and yellow, of 

 parts of its body, while all other parts were clear and colourless. 



36. Stephanops lamellaris, Ehren. — This remarkable Eotifer 

 has been found in Chesham Eoad Pool and the 

 inner moat of Berkhamsted Castle. On Septem- 

 ber 30th, 1913, when, like many other pools 

 in the district, Chesham Eoad Pool was very 

 low, a few specimens were obtained. One of 

 these is represented in fig. 18. The specimens 

 from the moat were numerous, and were taken 

 near the outlet at its south-eastern corner on 

 July 14th, 1914. 



These Eotifers often moved about among the 

 small quantity of starwort and duckweed on 

 the slide, and only occasionally swam freely ; 

 at other times they anchored themselves to the 

 slide, when they twisted and turned in a manner 

 quite ungainly, showing the dorsal spines on 

 the lorica, and the spine on the last joint of Fl S- 18 - 



the foot. The most striking feature, however, was the conoidal 

 head fringed by cilia and surmounted by a beautiful halo-like 

 shield. The two bright red eye-spots, although quite small, 

 were clearly seen, one in each corner of the base of the 

 conoidal head. During the varied movements of the Eotifers 

 the neck was seen to be quite flexible, and the foot was not 

 only flexible but seemed to be of a flabby nature. 



37. Euchlanis triquetra, Ehren. — Four specimens of this 



2 n 2 



