e al so discover ed on the same fins among the fin 

 ays many anterior port ions, na'mely the head and 

 orns,of other dead spec imens ,which had fteen dead 

 or a long time, and these,nine in numDer,showed sim- 

 larly consideraole variation in the length of the 

 orr.s^md two of tnem had a third horn ;of 18 spec- 

 mens a third had 3 simil^r horns. 



The neok which in the forego ing, species was so 

 hort jond always a small fraction of the swollen 

 art, is here always the same length or longer, 

 he aodomen in cornparison with the length of the 

 ntire iDody is percepti"bly shorter; its plumules are 

 1 or 22 in numher,we have not found tnem under 21. 



The plumules are all single in spec imens 2,4,3 & 9, 

 nd with short processes or "branches in 1,3 & 7. 

 3 & 6 go over the number;the last named had four 

 ranched plumules amongst the single ones. 



In spite of the mentioned differences oetween 

 his matured animal and the foregoing species we are 

 till in douot as to whether thi s form measures up 

 o a di stinet species, s i nce we have only to recall 

 ts sin.gular appearance,namely on the Dase of the 

 ins and on the fin raya. How far the parasites 

 f this. ,^enuc,whose species are so difficult to 

 istinguish from one another, really alter the ir form 



