176 LEECHES 



^Hemihdella soleae (Beneden and Hesse). 5-10 mm long. 

 Attached to scales on pigmented side of Solea vulgaris, Solea impar 

 and Solea monochir. W. Europe, Greenland and Mediterranean. 



ICHTHYOBDELLA BlainviUe 1827. Not a defined genus 

 today but one to which several smooth-skinned leeches without 

 pulsatile vesicles have been referred provisionally (Oka, 1910, 

 1931; Ingram, 1957). 



JANUSION Leigh-Sharpe 1933. Suckers cup-shaped, eyes 

 2 pairs consisting of clusters of black spots, abdomen flattened, 

 clitellum narrow, annuli 2, imperfectly described. 



^Janusion scorpii (Malm). 15 mm long. On Cottus scorpius. 

 Plymouth, U.K. 



JOHANSSONIA Selensky 1914. Suckers discoid, eyes 0, 

 abdomen rounded and ill defined, annuli 14 (16), coelom typical 

 but pulsatile vesicles small, embedded in skin and indistinguishable 

 after death except by sectioning, diverticula fused with 5 fenestrae, 

 testes 5-6 pairs. 



Johanssonia kolaensis Selensky. 20 mm long, posterior sucker 

 broader than abdomen. On Anarrhichas lupus. Arctic seas. 



Johanssonia pantopodum Selensky, 1914. 20 mm long, posterior 

 sucker not as broad as abdomen. On Nymphon stromii. Arctic 

 and perhaps W. Europe. 



MARSIPOBDELLA Moore 1952. Suckers discoid, eyes 0, 

 trachelosome somewhat constricted, annuli 12-14, diverticula 

 fused with 5 fenestrae, testes 5 pairs, median spermatheca lying 

 between ovaries. One sp. California. 



MYSIDOBDELLA Selensky 1927. Eyes 0, annuli 13, coelom 

 as in Hemibdella, diverticula fused with 5 fenestrae, copulatory 

 area poorly defined with no conducting tissue. 



Mysidobdella oculata Selensky. Uniform olive green. On 

 Mysis oculata. White Sea. 



MYZOBDELLA Leidy 1851 (Moore, 1946). Like Hemibdella 

 but eyes 1 pair, coelom reduced to ventral lacuna, testes 4-5 pairs. 

 At least one fresh water species (Meyer and Moore, 1954). 



Myzobdella lugubris Leidy. On the crab Callinectes sapidus in 

 brackish coastal waters. New Jersey to North Carolina. 



