^ f^ L A t E XXXVlli, 



and length of its legs, permitting it to dart with great velocity iii any 

 dire6lion, and when it alights, it caufes only a gentle tremulous 

 motion beneath it. Its habits have much affinity to the generality of 

 aquatic infecSls, and being conftantly found on that element, would 

 almoft determine it to be of that race ; but it is rather amphibious^ and 

 very rarely defcends beneath the furface^ It will at intervals reft for 

 feveral minutes motionlefs on the water, its fix legs are then ex- 

 panded, and the tarfi of the feet only touch the furface ; but the Clmex 

 Stagnorum is remarkable for the regularity and carefulnefs of all its 

 anions; it rarely runs, but treads the water, flow, and ever appears td 

 apprehend danger ; it frequently paiifes fuddenly, and if it then perceived 

 any thing difagreeable, retires. Aquatic Infers are generally fupplied 

 at feveral parts of their body with an oily matter that the water can- 

 not penetrate, and the legs of this Infed is apparently poffefTed of that 

 property. 



I^L A Tfi 



