180 LEECHES 



PONTOBDELLA Leach 1815 (Harding, 1910; Hickman, 

 1941; Ingram, 1957). Suckers cup-shaped, trachelosome ill- 

 defined, body rounded and studded with numerous large and small 

 tubercles, annuli very distinct 3, 4 or 5, pulsatile vesicles very 

 inconspicuous, coelom typical, diverticula fused, testes 6 pairs, 

 copulatory area with vector tissue. Several spp. 



*Pontobdella muricata (L.) 100-200 mm long, anterior sucker 

 much wider than trachelosome. Various sp. of Raia, Torpedo 

 and Pleuronectes. W. Europe, Mediterranean, Iceland, Greenland, 

 Spitzbergen. 



Pontobdella vosmaeri Apathy (1888). Anterior sucker not much 

 wider than trachelosome. Mediterranean and Roscoff. 



PONTOBDELLINA Harding and Moore 1927. Like Ponto- 

 bdella except that body is sharply divided into slender trachelosome 

 and broad flattened abdomen. 



PTEROBDELLA Kaburaki 1921 (Harding and Moore, 1927; 

 Scriban and Antrum, 1928-34). Oral sucker small and deeply 

 cupped, eyes 0, posterior sucker large, anterior two-thirds of body 

 bears on each side a longitudinally running fin which is indented 

 opposite the clitellum, annuli 14, diverticula absent, testes 5 pairs, 

 genital openings emerge into a common pore. One sp. from 

 Trygon in brackish waters of Chilka Lake. 



PTEROBDELLINA Bennike and Bruun 1939. Like Ptero- 

 bdella except oral sucker bears 4-6 papillae on each side, fins run 

 whole length of body, genital openings are separate. 



Pterobdellina jenseni Bennike and Bruun. 20-40 mm long. On 

 Raia. Off Faeroes at depths of more than 400 m. 



SANGUINOTHUS de Silva and Burdon-Jones 1961. Suckers 

 well developed, eyes 3 pairs, posterior sucker capable of folding 

 round each side of a fin ray and bearing a ring of ocelli, clitellum 

 constricted, abdomen flattened, annuli 3 (6), coelom reduced as in 

 Platybdella, diverticula separate, ganglia 18+1 fused anteriorly, 

 testes 5 pairs. 



^ Sanguinothus pinnarum de Silva and Burdon-Jones. 10 mm 

 long, uniformly reddish brown. On fins of Cottus bubalis. Anglesey 

 and Isle of Man, U.K. 



