230 The Microscope. 



subcentral. The contractile vacuole single, placed anteriorly, large, 

 pulsating slowly. The tentacles ai;e few in number (two to four), 

 extensible, flexible, sometimes thrown out to a distance equal to six 

 or more times the length of the body, and actively exploring the 

 space within reach; they are apparently capitate, certainly not 

 pointed. The pedicel is short, not exceeding one half the length of 

 the body. 



Size : -^xrVo" ^^ xo^ ^^ ^^ inch. 



On the pedicels of Epistylis digital^ on Cyclops from forest 

 ponds filled with decaying leaves in A.pril. 



This species differs remarkably from other Podophryge, most of 

 which have the tentacles little or not at all flexible, and the bodies re- 

 maining nearly constant in shape and fixed in position; while in this 

 one the body is very plastic, sways from side to side, and often in 

 the smaller examples, the anterior extremity is bent down below the 

 attachment of the stalk ; again, the arms are incessantly exploring 

 every nook and corner within reach, like the long searching neck of 

 Trachelocerca olor, in this regard the tentacles closely resemble those 

 of Acineta cuspidata. After patient search I observed the capture 

 of food by the snake -like arms, and the manner of it indicates that 

 the species would better be considered as belonging to Podophryce 

 than to any other genus at present established. The animal taken 

 was a microzooid ol E. digitalis, in size it was nearly the equal of 

 its captor ; the tentacle which held the prey was soon very much 

 shortened, thickened and ceased its writhing, while the free one kept 

 up its search for more. The situation was such as to prevent the use 

 of a sufficiently high power to disclose the streaming of the endo- 

 plasm of the victim through the tube, but as the body of the cap- 

 tured zooid soon became shriveled, I inferred that it must have 

 done so. 



I have already referred to the two distinct sizes, one nearly 

 twice the diameter of the other ; the smaller is transparent, the 

 larger nearly opaque, it is also less plastic, the arms relatively shorter 

 and not seen to extend so far, but as constantly and rapidly in mo- 

 tion. The smaller usually have two tentacles, the others four. It 

 seems to me that all are different stages of one species. 



CarchesiHmgranulatniii,n. s., (fig. 3.) Body elongate, twice or 

 more as long as broad, subcylindrical, slightly constricted below the 

 peristome border, which is thickened and slightly dilated. The cuti- 

 cular surface is beset with rows of distinct elevations similar to those 



