112 Miscellanea. [Vol. II, 1908.] 



on the surface of the water. The neck of the flask-Hke c^^st, more- 

 over^ is never so long as in Euglena tuba. 



In the description of Euglena tuba given in Saville Kent's 

 Manual of Infusoria (part iii, page 385), it is stated that the 

 motile and the encysted forms were not observed together, and 

 that on account of the peculiar shape of the enc3'sted form it was 

 doubtful if the two forms belonged to one and the same animal. 

 I do not know if the two forms have been seen together since then, 

 but in the present species the motile animals were seen many times 

 by the writer coming out of the temporary encystment. In fact, 

 empty round or flask-shaped bodies can always be seen lying here 

 and there near the free-swimming animals, and the escape of the 

 animals can be easil}^ observed by keeping the water containing 

 them for a few hours in a closed vessel. The animals may come out 

 of the encystment while it is round, or may come out when it has 

 assumed the flask-shaped form. In the latter case, the animal 

 never comes out through the mouth of the flask, nor has it ever 

 been seen by the writer coming out of the side opposite the mouth; 

 it appears always to get out lateralh^ The wall is ruptured on 

 one side and the anterior end of the animal with a small flagellum 

 projects forward. Gradually the whole animal passes through 

 the opening. For a short time after coming out of the encystment 

 the movements of the animal are very slow. At one time during 

 the escape of the animal, it appears to be divided into two equal 

 halves by a constriction in the middle caused by the narrow open- 

 ing. In three or four minutes the whole animal is out. The 

 mouth of the flask is always striated, but the neck and the body 

 are quite homogeneous and transparent. 



When the encysted animal is exposed to bright dajdight, the 

 red granules come to the surface, and thus the individual animal 

 and the whole surface of the water have a deep red colour. In 

 shady places the red pigment is collected at one end of the bod}' 

 and the remaining part is perfectly green, and the colour of the 

 water, therefore, is greenish. 



The animal greatly resembles Euglena tuba, Carter. The 

 chief points in which it differs from the latter are — 



1. The presence of the red granules. 



2. The absence of network in the encysted condition. 



3. The smaller length of the flagellum. 



4. The smaller length of the neck. 



vShiv Ram Kashyop, B.Sc. 



Assistant Professor of Biology, 



Govt. College, Lahore. 



