HIRUDO TROCHTINA. 147 



imagined, being very apt to fester and become sores; and in per- 

 sons of a bad habit of body, to degenerate into extensive ulcers, 

 that in too many instances have occasioned the loss of limb, and 

 even of life." 



HIRUDO PROVINCIALIS.— Lisbon Leech. 



Pl. XXIII. 



Spec. Char. Body olive-green above, with yellow 

 spots ; a longitudinal band on the back, green ; sides 

 yellow ; abdomen green, with a broad black longitu- 

 dinal line on either side. 



This species inhabits Portugal, and is imported in great quantities 

 from Lisbon, to supply the London market. 



HIRUDO TROCHTINA.— Trout Leech. 



Spec. Char. Body elongated, brown above, with 

 yellow rings surrounding the black spots ; a yellowish 

 line along the sides ; abdomen greenish-yellow, with 

 black spots. — Johns, p. 32. 



Inhabits rivers. It appears to be a new species, and was first 

 described by Dr. Johnston. 



