70 HIRUDO. LEECH. Class VP. 



2. Sangui- H. Lin. Syst. Gm. Lin. 30Q5. Hirudo maxime apud nos vul- 

 tt .' ' Faun. Suec. No. 2078. garis. Raii insect. 3. 



L. with a depressed body; in the bottom of 

 the mouth are certain great sharp tubercles or 

 whitish caruncles. The slenderest part is about 

 the mouth ; the thickest towards the tail ; the 

 tail itself very slender ; the belly of a yellowish 

 green ; the back dusky. 



Inhabits standing waters. 



Leeches are good barometers, when pre- 

 served in glasses, and predict bad weather by 

 their great restlessness and change of place. 



3. PlSCIUM. 



Geometrical. 



H. geometrica. 

 3097- 



Gm. 



Lin. 



Lin. Syst. 1080. Faun. Suec. 



No. 2083. 

 Roesel. App. tab. xxxii.y. 1.4. 



L. with a filiform body ; greenish, spotted with 

 white ; both ends dilatable, and equally tena- 

 cious. 



Inhabits the same places ; moves as if mea- 

 suring like a compass, whence the name ; found 

 on trout and other fish, after the spawning sea- 

 son. Tab. xxi. Jig. 3. 



