HiLGENDOKF. — Oil Ncio Zealand Eotifera. 115 



occui' on the corona, within the encircling wreath, and just 

 outside an inner wreath. Most of these are so disposed as to 

 very effectually assist the passage of the food to the mouth. 

 Owing to the opaqueness of the surrounding parts, neither 

 mouth, gullet, nor mastax was accurately observed. The 

 mastax is probably very small, and situated about half-way 

 back in the head, for this is where the brain is situated, and 

 it is the only organ of sufficient density to hide so usually 

 obtrusive an organ as the mastax. Behind the mastax the 

 stomach swells out suddenly, and then tapers gradually to the 

 intestine, closely following the outline of the whole animal. 

 The intestine is narrow, and opens into a very small cloaca. 

 There are many strong and obtrusive muscle-bands ; those 

 ^ in the head and anterior part of the body pass outwards and 

 backwards, those in the posterior parts more or less parallel 

 with the body-walls. The foot-glands were very noticeable ; 

 they are of large size, dark colour, and Indian-club shape ; 

 they are quite distinct, and each enters its own toe quite 

 separately. The brain is of quite enormous size. As before 

 hinted, it lies about the centre of the head, and is probably 

 roughly spherical. Looked at from above it is composed of 

 three lobes, two large lateral ones and a small posterior one. 

 It is heavily loaded with a black pigment. In front, corre- 

 sponding with the small posterior lobe, is inserted a large red 

 eye-spot of rather complicated shape, rather like that of a 

 fancy vase with a knobbed lid on, but clearly seen in the 

 accompanying figure. The bladder for the reception of the ex- 

 creta is unusually large. It lies to the left and ventral side 

 of the posterior part of the stomach and the intestine, and 

 passes by a narrow tube back to the small cloaca, which opens 

 some distance in front of the foot. Floating all about in the 

 body-cavity were numbers of large eggs ; these were already 

 highly segmented in some cases, while in others segmentation 

 had not as yet commenced. The ovary itself, which was very 

 obscure, appeared to lie in the right ventral part of the body- 

 cavity. 



Movements and habits I cannot describe, as my only speci- 

 men was almost dead when I found it. 



Hab. The horse-trough. 



Family NOTOMMATAD^. 



Genus Notommata, Gosse. 



Generic characteristics : Body not annulose, more or less 

 cylindrical, in my species a good deal depressed. Special 

 orgaiis on the head for locomotion ; auricles, evertile and 

 protrusible. Brain large, containing opaque chalk masses. 

 Trophi virgate. Eyes (see " Specific characters," below). 



