1889.] H. H, Anderson — Notes on Indian Rotifers. 347 



them in process of formation in the cup beneath the chiu. I was unable 

 to discover any essential difference of structure. 



6. LiMNiAS CEEATOPHTLLI, Sohrank. 

 Is extremely common and often occurs in large clusters. 



7. LiMNIAS ANNULAIUS, Cubit. 

 I have only come across this species once, in water taken from a 

 gumlah in my orchid house, but on that occasion I found plenty of speci- 

 mens. 



On the same date, January 21st, 1889, and in the same water, I found 

 one specimen resembling annulatus, but differing from it in having 

 the ridges very wide apart, i. e., more than xoVo"- The ridges wore not 

 so decided as in annulatus, but still plainly visible, the antennse were 

 very short and not prominent in retraction. The tube was transparent, 

 but far more covered with debris than the tube of annulatus usually is. 



8. Cephalgsiphon limnias. 



Several specimens were seen, December 9th, 1888, but it is far from 

 common in these Entally tanks. 



9. CECHISTES STEPHANION, U. Sp., PI. XX, Fig. 2. 



It differs from most (Echistes in having a very small corona the 

 diameter of which is not more than half that of the body. The chin is 

 very prominent, the distance from its tip to the upper wreath being al- 

 most as great as the breadth of the corona itself. The cilia of the se- 

 condary wreath are larger and stronger below the chin than above it, and 

 the outline of the margin on which they are situated is very clear and 

 sharply defined. Immediately below the lowest point of the wreath are 

 situated the ventral antennae, which are very short and inconspicuous, 

 the setsB on them being with difficulty distinguished from the lowest cilia 

 with which they are almost in the same line. By watching the head of the 

 (Echistes, when closed, very carefully with a high power (900 diameters), 

 I saw what I take to be the dorsal antenna, which, as the animal unfolded 

 I was able to follow to their position as minute pimples on the dorsal 

 side of the neck at the edge of its upper fold just at the bottom of the 

 corona. The jaws are many-toothed, the gastric glands round and clear. 

 The substance of the body is granular, somewhat opaque, far more so 

 than in most Rotifers ; owing to this opacity the vascular system is 

 seen with difficulty. The cloacal aperture is situated half way down 



