458 THE ZOOLOGIST. 



33. Mastigocerca bicornis, Ehren. — Three specimens of this 

 elegant Eattulid were obtained from Chesham Eoad Pool on 

 May 26th, 1914. Their oral spines, from which the specific 

 name is derived, were very conspicuous — one a long, curved, 

 and strong spine, and the other close to it and short. In form, 

 the body was a long, truncated ellipsoid, for the most part of a 

 uniform light brown, presenting a pretty contrast to the ruby- 

 red eye-spot near the oral end. The toe, about two-thirds as 

 long as the body, including the long oral spine, was curved 

 slightly, and, like the toes of Kattulids generally, was like a 

 needle or awl. The total length of one of the specimens was 

 s^j-in. Occasionally, they burrowed through the vegetable 

 matter on the slide, but at other times their movements were 

 graceful, swimming forwards slowly and turning over and sway- 

 ing their toes quite leisurely. 



34. Floscularia campanulata, Dobie. — Among the very large 

 number of specimens of Kotifers so far obtained in the country 

 of the Chess and Gade, a few have belonged to the Ehizota. 

 Among these have been some Floscularias from the inner 

 moat at Berkhamsted Castle. On many occasions I have 

 examined collections of water-plants from several localities for 

 the purpose of finding specimens of these beautiful Rotifers, but 

 have been successful on only a few occasions. On July 14th, 

 1914, a fine specimen of F. campanulata was obtained from the 

 aforesaid moat. When expanded, its five broad lobes, one of 

 which was larger than the rest, bearing at and along their 

 curved tips radiating bundles of long setae, were easily seen, one, 

 two, or more of the lobes being fairly in focus at various times. 

 A single, oval egg of dark colour was close to the upper end of 

 the stem, which was surrounded by the usual hyaline casing, 

 rendered visible by small specks of matter adhering to its outer 

 surface. The cup of the Floscule was a fairly regular bell- 

 shaped body, the middle and lower parts of which were of a light 

 brown colour. By varying the illumination, an eye-spot of 

 bright-red colour was seen in the cervical region of the Rotifer. 

 The length of the Rotifer, when extended, was gV-inch. 



35. Floscularia coronetta, Cubitt. — On September 30th, 1913, 

 a small Floscule of this species was obtained from the inner 

 moat. It was attached to an angulated part of a leaf of duck- 



