494 



Microscopical Essays. 



It is among the fmailer animalcula ; the body is cylindrical 

 and bright, the hind-part obtufe, the fore-part fmaller, and ter- 

 minating in a globule ; a black line may now and then be per- 

 ceived down the middle of it. 



42. Enchelis Gemmata. 



Enchelis cylindracea, ferie globulorum duplici, in collum 

 hyalinum produ&a. Enchelis with a cylindrical body, the 

 upper part prolonged into a tranfparent neck, a double feries of 

 globules running down the body. It's motion is flow, and generally 

 in a (trait line ; it is found in ditch-water where the lemna thrives. 



43. Enchelis Retrograda. 



Enchelis hyalina, antice anguftata, apice globulari. Tranf- 

 parent enchelis, the fore-part rather fmaller, and terminating in 

 a fmall globule, Fig. 11 and 12, .Plate XXV. 



It has a gelatinous tranfparent body; no vifible interlines, 

 though a pellucid globule is difcoverable near the hinder part; 

 the body is thicker!: in 'the middle, and grows fmaller towards 

 each end. It generally moves fide-ways, fometimes in a retro- 

 grade manner ; and if it is obftru&ed in it's motion, draws itfelf 

 up as it is reprefented at Fig. 1 1 . 



44. Enchelis Feflinans. 



Enchelis cylindrica oblonga, obtufa, antice hyalina. Oblong 

 cylindrical enchelis ; the ends obtufe, the fore-part tranfparent. 



The 



