554 



Microscopical Essays. 

 133. Cercaria Crumena. 



Cercaria cylindraceo-ventricofa, antiee oblique truncata, cauda 

 lineari bicufpidata. Cylindrical ventricofe cercaria, the Fore-part 

 obliquely truncated, the tail linear, terminating with two diverg- 

 ing points. 



. The body is ventricofe and cylindrical, mufcular and thick, 

 the lower part fmall ; the upper part terminates in a fmaW, ftrak 

 neck, like the neck of a pitcher ; the body appears wrinkled, the 

 tail terminated as in the definition. 



134, Cercaria Catellus.. 



Cercaria tripartita, cauda bife&a. Three-parted cercaria, the 

 tail divided into two parts. 



This animalculum is more complex in it's form than many 

 others ; it has a moveable head, which is affixed to the body 

 only by a point ; an abdomen, which is not fo wide, but twice 

 as long as the head, replete with interlines, and a tail which is 

 fhorter than the head, narrower than the belly, and terminating 

 in two briftles ; thefe it can unite and feparate at pleafure. It 

 moves with vivacity, though without going far from it's firft 

 place. 



135. Cercaria Catelina, 



Cercaria tripartita, cauda bicufpidata. Cercaria diftinguifhed 

 into three parts, with a ihort forked tail. 



