276 DESCRIPTION OF [Polygastrica. 



Lorica brownish-yellow, urceolate, and nearly cylindrical ; 

 body hyaline. Found upon Zygnema decimum. Size of 

 lorica l-280th. 



425. VAGINICOLA decumbens. The decumbent Vagini- 

 cola. Lorica brownish-yellow, oval and compressed, as 

 shewn in the engraving, group 256. The lorica is decum- 

 bent, the body hyaline. Lives with the preceding. 

 Length of lorica l-280th. 



Genus XCVIII. COTHURNIA. The stilt little bell 

 Animalcules possess divisibility of the body, but not of 

 the lorica, which is urceolate in shape, and erected on a 

 rigid buckskin-like pedicle. A wreath of cilii is placed 

 upon the flat frontal region, and the mouth, joined with 

 the anal opening, lies sideway within it. The body is 

 elastic, and can withdraw itself within the stiff lorica : 

 polygastric apparatus and longitudinal self-division have 

 been observed in two species. The sexual structures are 

 not satisfactorily seen. 



426. COTHURNIA imberbis ( Vorticella folliculata, M.) 

 The beardless Cothurnia has the pedicle much shorter than 

 the lorica, the body of a yellowish colour. Ehrenberg 

 remarks, "This animalcule had often swallowed green 

 Monads, and yet accepted indigo. Trichodina vorax is the 

 enemy of this species." Found upon Cyclops quadricornis. 

 (Mic. Cab., plate viii. group 257.) Length of lorica l-280th. 



427. COTHURNIA maritima. The sea Cothurnia has 

 a pedicle much shorter than the hyaline lorica ; the body 

 is hyaline and whitish. Length of lorica l-570th. 



428. COTHURNIA Havniensis. The Copenhagen Co- 

 thurnia has a pedicle much longer than the hyaline lorica; 

 the body is whitish. Size, without the stalk, 1-280 th. 



