86 ADDENDUM ON NEBALIA. 



of three-fourths of an inch and is of a pale red or greenish 

 colour (greyish Leach) with black eyes, and inhabits sandy 

 shores about Greenland and particularly the mouths of 

 riverSj but is rare. According to Dr.Leach, it is also found in 

 the European Ocean. The female, Fabricius says, carries 

 her ova all winter, which begin to develope themselves in 

 April, the young appear in May, are extremely active, 

 adhere to the mother which has then but little life. In 

 swimming they turn on the back and use their hinder 

 feet, and when they rest, Jix themselves hy the anterior 

 pair I 



The Nebalia Montagui, which Montagu describes under 

 the title of Monoculus rostratus, was only half the size of 

 the former species, viz. three-eighths of an inch, is of a pale 

 yellow colour, with a darker longitudinal line along each 

 side ; inhabits the south coast of Devon. The fore feet, 

 he adds, are usually motionless and brought down under the 

 body, and that the antennae as well as the natatory feet arc 

 continually in movement, when the animal swims. 



I beg to repeat that we know these little animals too 

 imperfectly, and that they present a field for future obser- 

 vers, who may happen to be so fortunate as to meet with 

 them. We must see them reversed, the organs of the mouth 

 and members developed and magnified, which in an animal 

 of such size cannot be considered as a very difficult task, 

 when we contemplate what has been performed on many 

 of the smaller Monoculi not one-third part so large as the 

 smaller Nebalia. In addition, it would be desirable to know 

 whether they are really perfect animals, or only larva", 

 determinable by keeping some of the full grown ones in 

 sea water frequently renewed, or by the actual discovery 

 of females provided with ova. 



