1889.] H. H. Anderson— 2Vof(?s on Indian Rotifers. 349 



moving in and out of clusters of tie female, but I did not see actual 

 connection. Tliere is a certain amount of resemblance to the male of 

 Lacimilaria, ihe chief difference being the presence of a very large, clear, 

 circular space situated in front of the sperm sac which had all the ap- 

 pearance of a contractile vesicle, though I did not see any contraction. 

 The body is cylindrical with a foot jirojeoting from the lower side. 

 The foot glands are very large ; the large nervous ganglion has branches 

 to the antenna and to the two eyes, and one proceeding backwards em- 

 bracing the top of the contractile vescicle. The integument, which is 

 very transparent, occasionally takes the ringed appearance noted above 

 as occurring in the female. There is a regular network of muscles 

 (these are not clearly shown in the figure). The cilia surrounding the 

 head are large, setting up a strong current. The length is yxo") the 

 breadth 



Order II. EDELLOIDA. 



Family III. Philodinadse. 



I have come across several different species of this family, but have 

 not been able to differentiate them with satisfaction to myself. I note 

 here those only about which I feel a tolerable amount of certainty. 



11. PniLODiNA ciTRiNA, Ehrenberg. 

 Eairly common at all seasons. 



12. PniLODINA HIESUTA, (?), PL XX, Pig. 4. 



This sjiecies is extremely common, and may be the P. liirsufa men- 

 tioned by Pritchard. There are fine hair-like spines all over the surface 

 of the body, but the colour is not pale yellow, nor is the foot " prolonged 

 by dorsal spines." The antenna is long and straight. The distinction 

 between stomach and intestine is very clearly marked, and the latter is 

 large. Two clear round (salivary) glands are very noticeable. It is 

 very common, and is almost always attached to the stems of Vorticella, 

 Epistylis, &o. It apparently leads a very sedentary life, for I have had 

 specimens under observation for hours without their moving from their 

 attachment. The contraction of the stem to which they have fixed 

 themselves does not seem to disturb them, and, as soon as it uncoils, 

 they unfold their wheels even before the Vorticella or Carcliesiwn has 

 opened out. I have often seen a couple attached on each side of the 

 stem of a Vorticella just below the bell, and sometimes more than two. 

 The fine haii--like spines are variable both in length and position, in 



