DEAD ROTIFER AND VIBRIONES. «') 



above the general level, and transverse markings are 

 also apparent, which may be compared to hoops. 

 This is the Coleps hirtiis, which differs from the 

 usual type of Infusoria, by being symmetrical, that 

 is, divisible into two equal and similar halves. 

 The di^iensions of this species vary from 1-570 

 to 1-430, and its colour varies from white to brown. 

 It has been observed to increase by transversa self- 



^65 



Coleps hirtus. 



division, and has two orifices, one at each end, for 

 receiving food and ejecting the remains. It often 

 requires some little trouble to get a good view of 

 the cilia, which are arranged in transverse and 

 longitudinal rows. A power of one hundred and 

 fifty linear is convenient for viewing it in motion, 

 but when quiet under pressure, one of five or six 

 hundred may be used with advantage. 



Among the rubbish at the bottom of the bottle, 

 in which the coleps was found, was a minute dead 



