LERNEOPODA. 329 



male the body is divided into two nearly equal ovoid por- 

 tions, one being the head, the other the thorax. 



The first species mentioned here was figured by the late 

 Dr. Scoresby in his ' Arctic Regions/ It is found attached 

 to the eye of the Arctic shark, and seems to blind it ; the 

 sailors believe this shark to be blind, as it pays not the least 

 attention to the presence of man, and does not draw back 

 when a blow is aimed at it with a knife or lance. 



Lerneopoda elongata, Grant, sp. Grant's Shark-sucker. 

 (Plate XX. fig. 2.) — This is three inches long ; the thorax 

 is long and narrow, and has two long cylindrical arms, con- 

 siderably longer than the body ; ovaries nearly the length of 

 the entire body. Dr. Baird mentions that a specimen of 

 this Arctic species was taken from the eye of a shark taken 

 on the English coast ; its arm-shaped appendages were in- 

 serted into the cornea to the depth of nearly a fourth of their 

 length. 



Leeneopoda Galei, Kroyer. — Length about three-fourths 

 of an inch ; ovaries not quite equal to length of thorax. 



Found on the Squalus Galeus, taken at Belfast. 



Lerkeopoda salmonea, Linn. sp. — Body obovate, thorax 

 obcordate, two arms linear, approximated ; ovaries thick, as 

 long as the whole animal; white. Length, half an inch. 



