324 DESCRIPTION OF [Poly^astrica. 



Family XXII.— EUPLOTA 



Comprehends polygastric animalcules having a lorica 

 and alimentary canal, with two separate orifices, neither of 

 which are terminal. They possess powerful organs of 

 locomotion, similar to those of the preceding family. 



This family resembles in many respects the genus 

 Asellus of the Entomostracia, whose organization is so 

 highly developed : hence this family very properly closes 

 the grand division Polygastrica. Organs subservient to 

 nutrition are distinctly elicited in three genera — one is 

 marked by having a cylinder of wahd-like teeth, and a 

 beautiful rose-coloured digestive juice, like the genus 

 Nassula. The propagative apparatus is double in three 

 genera, ova granules are found in two, male glands in 

 two, a contractile vesicle in three ; self-division, transverse 

 and longitudinal, is observed in one, but gemmae are not 

 produced. One form is green, the others are colourless 

 and whitish. 



This family comprises the following genera: — 



\ rhead distinguished from the body .... Diseoceplialus. 



Wth T"— / *^^'^ absent < 



*^' "~"° \ Lhead not distinguished from the body . Himantophorus. 



I teeth present Chlamidodon. 



With cilii, claws, and styles Euplotes. 



Genus CXXX. Discocephalus. The disc-headed 

 Aiiimalciiles have neither styles nor teeth, but possess 

 uncini, and have the head distinguished from the body 

 (capitate). The organization is unknown, only the non- 

 vibratile uncinated locomotive organs having been specially 

 observed. 



