348 DESCRIPTION OF [Rotatoria. 



therefore the dorsal tail-like portion becomes a ventral 

 member, or foot. Fig. 386 exhibits an animalcule within 

 its case, and having the rotatory organ contracted: Jig. 

 387 is another, with the latter fully expanded ; in this 

 drawing, an outline only of the case is given, in order to 

 shew the internal structure. Two of the ova exhibit the 

 eyes and teeth, the latter are formed first. Found upon 

 lemna and other aquatic plants. Length l-12th; case 

 l-24th; egg l-150th. 



Genus CXLVIII. FLOSCULABIA. The flower wheel 

 Animalcules possess (when young at least) two eyes, and a 

 rotatory organ, four or five (?) or more lobed. These elegant 

 animalcules have each a distinct gelatinous case, the ends 

 of which are attached to water plants. They are often so 

 very diaphanous as to escape observation, unless the water 

 is rendered turbid with colour; the rotatory organ is 

 so very peculiar in structure that some observers do not 

 consider it as such. The alimentary canal is simple and 

 conical (Coelogastrica), but is remarkable as possessing a 

 second oesophagal bulb or head, the lower one only having 

 jaws and teeth; two pancreatic glands are present anteriorly. 

 The propagative system resembles Lacinularia. The ova 

 are deposited in the case; vessels unknown. The red eyes 

 indicate sensation. They resemble in appearance some- 

 what Acineta. 



579. FLOSCULABIA proboscidea. The proboscis Floscu- 

 laria is large, has a cylindrical hyaline gelatinous case, and a 

 six-lobed rotatory organ, with short cilii, surrounding a cili- 

 ated flexible proboscis, which has apparently an opening at 

 its end. The body is ovate, and has a long sty liform contractile 

 foot -like tail attached to the base of its case; when extended, 



