168 



up of the anteriur tips. Tlie posterior marofiii shows the 

 characteristic notching of the edge and back, and the 

 division of the face into the three deep cnp-like locnli by 

 two radial ridges. 



P. J. van Beneden's figs. -3 and 9, pi. III., " Vers 

 Cestoides," represent much the same condition as is 

 represented in Yar. A. Fig. 2, pi. III. of the same book 

 shows the condition of Var. B. Variety C has been 



Fig. 20. Echeneibothriuui rariabilc. van Ben. Var. C. Mag. 40 dia. 



figured by Olsson,* whose fig. 15 is very similar to fig. 20. 

 The variety is there described as " Forma singular is 

 floribus Rosarum similis." 



Such ■' varieties "' as are spoken of here are to be 

 regarded as conditions produced by the manner in which 

 the animal has died. The effect of the killing in fresh 



'■'■• Entozoa iakttagna hos skandiuaviska h.afsfiska. Acta Univ. 

 Lundensis. Lunds. Univ. Aarskrift for 18GG. Luud. 1866-7. 



