OF ANIMALCULES. 131 



cylindrical when extended : in contracting, the body is 

 enlarged more than the head ; the anterior is ciliated ; the 

 tail emanates from the lower side. 



287. Trichoda delphis. — This species appears closely 

 allied to the T.Jimhriata and T. camelus (2/9 and 280). 

 The posterior is produced in the present species, and 

 bent upwards. The head, which is circular, is furnished 

 with long radial cilia. 



288. Trichoda delphinus. — Egg-shaped animalcule, 

 with the posterior produced, bent upwards, and enlarged 

 at the extremity : the fore part is ciliated. 



289. This animalcule resembles figure 174, but has no 

 cilia at the posterior extremity. 



290. Trichoda cuniculus. — Oblong 5 the anterior cili- 

 ated and obtuse ; the posterior pointed. Found in clear 

 water. 



291. Trichoda /e/is. — A long curved animalcule : the 

 anterior smaller than the body, which gradually dimi- 

 nishes, and forms the tail : the head is ciliated, and the 

 body furnished to its extremity with a single row. 



292. Trichoda pwds {Oxj/tricha piscis,E,). — The fish 

 Trichoda has a blunt head, fringed with bristles ; a body 

 gradually diminishing in size, and terminated by a slender 

 tail. (See Book III.) 



293. Trichoda Jixa.^This is a globular animalcule, 

 with a long slender proboscis, and the body is covered 

 with short radial hair. It is often attached to the Leuco- 

 phrys signata. 



294. Trichoda iransfuga. — In form resembling the 



