APPENDIX A 



163 



Fig. 15 



Jaw of Limnatis to show salivary papillae. 

 After Autrum. 



Fig. 15. Ventral view of anterior sucker of Limnatis showing 

 groove on ventral surface of upper lip and jaws protruding 

 through velar pore. After Autrum. 



43. About 21 bright red spots in mid dorsal line 44 



— Red spots absent; 2 annuli between genital pores; 

 8 copulatory gland pores as in Fig. 13c; about 50 teeth 

 per jaw. Macrohdella ditetra Moore 1953 



44. 5 annuli between gonopores; 4 copulatory gland pores 

 as in Fig. 13a; about 65 teeth per jaw. 



Macrobdella decora (Say 1824) 



— 2| annuli between gonopores; 24 copulatory gland 

 pores as in Fig. 13b; about 40 teeth on each jaw. 



Macrohdella sestertia Whitman 1884 



45. 5 annuli between gonopores; copulatory glands absent; 

 jaws low and rounded, rarely absent; teeth large, blunt 

 and in 2 distinct rows. Haemopis Savigny 1820 46 



— 3 or 4 annuli between gonopores but in mature leeches 

 gonopores obscured by numerous gland pores (Fig. 16); 

 jaws high and narrow ; teeth small and in rows which are 

 not entirely separated. Philobdella Verrill 1874 51 



46. European leech; segment VI with 3 annuli, VII with 

 4 annuli (Fig. 17a); colour varies from dark grey-green 

 to pale yellow-green, paler ventrally, with variable 

 amounts of black flecking; 11-19 pairs of teeth per jaw. 



Haemopis sanguisuga (L.) 



