356 THE CRYSTALLINE JOHNSTONELLA. 



I reply that I am scanning the plan of my inheritance. 

 And when T find any tiny object rooted to the rock, or 

 swimming in the sea, in which I trace with more than 

 common measure the grace and delicacy of the Master 

 Hand, I may not only give Him praise for his skill 

 and wisdom, hut thanks also, for that He hath 

 taken the pains to contrive, to fashion, to adorn 

 this, for me. 



THE CRYSTALLINE JOHNSTONELLA. 



I have the pleasure of announcing a new animal of 

 much elegance, which I believe to be of a hitherto 

 unrecognised form. I shall describe it under the 

 appellation oi Johnstonella Catharina. (Platfe XXV). 



Body f inch long, ^ inch in greatest diameter, flat, 

 thin, as transparent and colourless as glass. 



Head dilated on each side into two lobes, which are 

 flat, pointed, and leaf-like, extending laterally to a 

 considerable distance. Along the posterior pair are 

 soldered a pair of excessively long, slender antennae, 

 tapering to a fine point; they appear simple unjointed 

 filaments, directed divergently backwards to a greater 

 length than the body, and incapable of change in 

 direction. The basal moiety of their length is invest- 

 ed with a loose skin, which corrugates into folds. 



Eyes two, black, small, on the summit of the head, 

 between the posterior lobes : a line of minute black 

 specks runs down the middle of the neck behind 

 the eyes. 



Body narrow at each extremity, widening in the mid- 

 dle : furnished on each side with sixteen fin-like narrow 

 lobes, each of which bears at its extremity two oval 



