388 



Microscopical Essays,, 



antennas are of an equal fize throughout, and divided' into fix 

 oval pieces, which are articulated together. The extremities of 

 the feet are furnifhed with a membranaceous and flexible bladder* 

 which it can throw out or draw in at pleafure. It places and 

 prefles this bladder againft the fubftances on which, it is walking, 

 and feems to fix itfelf thereby to them ; the bladder fometimcs- 

 appears concave towards the bottom, the concavity, diminishing 

 in proportion as it is lefs prefied. 



They have four wings, two upper and two under ones ; thefe- 

 lafl are with great difficulty perceived ; they are fixed to. the up- 

 per part of the breaft, laying horizontally ; both of; them are 

 rather pointed towards the edges,, and have a; ftrong. nerve run- 

 ning round them, which is fet with a hair fringe, tufted at the 

 extremity. The wings are reprefented by themfelves at. Fig. 4,- 

 the infect of the real fize at Fig. 5. They are to be found in 

 great plenty in the fpring and fummer, in the flowers of the 

 dandelion, &c. 



€>e Fig. 2, Plate XVIII. 



This beautiful opake object is a piece of the fkin of the lump 

 fifh. For a full defcription of this lingular creature, I muff refer 

 the reader to Pennant's Britifh Zoology, vol. iv. page 117. 

 There are no fcales on the body, but a greater number of thefe 

 tubercles, which are exhibited in this figure. When a good 

 fpecimen is procured, it forms a mod delightful object for the ^ 

 opake microfcope. It is probable that the fifh exudes an un&uous 

 matter from thefe tubercles. 



Fig.. 



