for the Microscope. 99 



Oblong and flattened. Ciliated on all sides in longitudinal 

 series. Abundant in infusions and in stagnant water. (PI. 

 X., fig. 7.) 



781. BARREL ANIMALCULE (Coleps Jdrtus). Oval, with 

 abrupt ends. Shelly covering barrel-shaped, apparently 

 composed of small polygonal plates, between which are 

 the cilia. Movements brisk. Amongst Confervae. (PI. 

 X, fig. 3.) 



782. MULLER'S CH^TC-SPIRA (Chcetospira Mulleri). 

 Inhabiting a flask-shaped sheath, which is imbedded in the 

 cells of duckweed, a ciliated feather-like spire above 

 projecting. Probably not uncommon. (PI. X., fig. 4.) 



783. SHEATHED BELL ANIMALCULE (Tintinnus co- 

 thurnid). Inhabiting a cylindrical hyaline sheath. Trans- 

 parent, cup-shaped, with a patulous mouth surrounded by 

 rather long cilia, a flexible pedicle attached to one side of 

 the sheath. In brackish water. (/. G. Tatcm.} (PI. X., 



fig- 5-) 



784. MULLER'S STENTOR (Stentor Mullen}. Trumpet- 

 shaped, large ; when contracted, ovoid. With a wreath of 

 cilia. Swimming freely, and disposed to congregate. 

 Amongst duckweed and other aquatic plants. (PI. X., 

 fig. 2.) 



785. SHEATHED TRUMPET ANIMALCULE (Vaginicola 

 crystalline?). Enclosed in a transparent cylindrical case, 

 slightly narrowed at the extremity. Body capable of 

 extension and retraction within the case. Attached to 

 duckweed. (PI. X., fig. 6.) 



786. URN-SHAPED VORTICELLA (Vorticella microstomci). 

 Body urn-shaped, attached to a pedicel six times its 

 length. When contracted, exhibiting transverse rings. 

 Pedicel readily and quickly contracted. Apex with a 

 ciliary wreath. In stagnant water. (PI. X., fig. 14.) 



787. BELL-SHAPED VORTICELLA ( Vorticella convallarid). 

 Body bell-shaped, attached to a pedicel six times its 

 length ; mouth broader than the last. bundant, attached 

 to water-weeds and other objects. 



788. GREGARIOUS VORTICELLA (Vorticella nebulifera). 

 Body somewhat bell-shaped, attached to a pedicel five 



