?c WORMS. INTESTINA. 20. Hirudc 



Body deep grafs-green with a tranfparent border all round : eyei 

 2, deep black : eggs 5 or 6, oval and deep brown. 



*Heisro- Body dilated, pellucid, yellow, with an entire margin. 

 clyta. Trembley hid. Polyp, tab. 7, fig. 7. 



Found in ftreams among aquatic plants : 7 lines long ; and often 

 fixes itfelf on the inhabitant of the Helix planorbis, and fucks 

 its juices. 

 Body flattifh, pointed before and broadifh behind ; marked above 

 with numerous fine longitudinal ftria* of black fpecks, and 

 remote tranverfe brownifh ones, the fartheft of which are 

 black with fulvous fpecks : head white ; eyes 4— -6 : eggs nu- 

 merous, fphasrical, green, furrounded with a pellucid ring: 

 the young ones that efcape firit are yellow, the latter ones 

 green. 



*Gecmetrd ^ on gated, yellowim-green with a row of white fpots, 

 Pennant Brit. Z00L iv. p. 38, tab. 20, f. 13, 

 Barbui Gen. ofWoxms, p t 20, tab, 2, f. 7. 

 Roef. Inf 3, p % 199, tab. 32. f. I— 4. 

 Frifch Inf. 6, /. 25, tab. 11. 

 Lederniuller micre/lcp. tab. 84, f a— i. 

 Inhabits frefh waters, and fixes itfelf on the bodies of Trout and 



other fifh after the fpawning feafon : 8 lines long : moves as 



if meafuring like a compafs. 

 Body tapering before and verv broad at the tail-end : eyes 4 : , 



colour varying. 



<-l'efulata. Cinereous with a teffelate margin; eyes 8, in a double Ion* "'-. 

 gitudinal row. 



IvIulU Hiji. Verm. 2, p. 45, n. 173. 



Inhabits rivulets; about 18 lines long. 



Body dilated and covered every where with black fpecks ; above 

 with orange or white fpots, or partly grey partly orange ; be- 

 neath grey with 2 rounded white fpots in the middle, 



Marginata Dilated, brown with a tefTelate margin : eyes 4. 

 Mull. Hifi. Verm, i, 2. p. 46, ».174 

 Inhabits rivers, and refembles the laft ; 10 lines long. 

 Head obtufe before and narrowed behind, white, pellucid and 

 marked with 2 tranfverfe bro.vn bands : abdomen reddifh- 

 brown, with very minute ftrias meeting beneath in doubled 

 brown lines : back with 5 rows of whitifh dots, the lateral 

 margin white, with a double brown line divided into fquare 

 patches : tail orbicular, pale with brown fpots on the margin, 1 



projja, pilated, yellowifh, and divided on the fore-part. 

 Mull.'Zool. Dan. 1, p. 69, n 9 27, tab, 21, f. I— 5,' 



Found 



