64. WORMS. INTESTINA. 18. Planaria. 



Rutilans, Linear with a black eye, and tapering to a point before, 

 MuU. Zool. Dan. 3 p 49. tab, 109. fig. 10, 11. 

 In the Baltic among Fuci. 



C. With 2 eyes, 



* Fufca. Black-brown with a femipellucid whitifh fpot above the tail. 



Hirudo nigra. Lin. Taanfa3.'\\. p, 3 1 6. 



Pal!, Spicil. Zool. 10 p 21. tab. i. fig 13. a, b, 



found in flow ftreams, upon aquatic plants. 



Body when at reft circular and feldonv above a line in length* 

 when in motion linear depr fled and extends itfelf to 3 lines 

 long : it's motion is uniform, fmooth, by gliding along the 

 ftxeam. 



* LaSea, Body depreflTed, oblong, whitifh, and truncate tin the fore* 



part. 



Natur. Mifcellany. xi. tab. 424. 



Hirudo alba. Linn Iran/. \i. p. 316. 



Mull. Zool. Dan. 3 p. 47. tab. 109. fig. I, 2. 



Inhabits ponds and rivulets in the fumflier feafon, among aquatic 

 plants; when in motion about an inch long: body with a 

 white fpot in the middle, the purple vifcera elegantly branch- 

 ing round it; the margin white and very traniparent: ovary 

 oblong and generally pointed at the ends. 



Torva. DepreflTed, oblong, cinereous or black and whitifh beneath-: 

 iris white. 

 Mull. Zool. Dan. 3. p 48. tab. 109. fig. 5, 6 # 

 Found in waters; about 4 or 5 lines long. 



Body obtufe on the fore-part and a little pointed behind: eyzi 

 pellucid beneath: ventral pores white with pinnate brown 

 inteftines : fometimes blackifh with 3 pores beneath and an 

 angular white fpot behind the eyes. 



<lentaculata DepreflTed, oblong, cinereous, and tubular on the fore-part. 



Mull. Verm 2. p. 65 n. 187. 



Inhabits itagnant waters, about 7 lines long. 



Body nearl) obtufe at each end, the lateral margins ilnuate : back 

 with a whitifh fpot, fometimes brown margined with black 

 dots : belly whitiih or cinereous : intefiines fometimes \ iiible, 

 with Ample or forked branches. 



Crenata, DepreflTed, ovate-oblong, pale, with a crenulate margin, 

 Mull Rijl. Verm. 2. p, 64. n. 188. 

 Inhabits lakes of Denmark ; refembles P. ladea. 

 Back dull reddifh-brown with a whitifh fpot in the middle 

 intefiines very much branched. 



^ Helluo, 



