52 



setae; ocelli or little eyes, two, one being obso- 

 lete. [PL III, fig. 5.] 



The Cimex or Bug, the Water-scorpion, and 

 the Boat-fly belong to this order : the species 

 are numerous, and many are extremely beau- 

 tiful in their colours ; others are as remarkable 

 for their size and singular forms. Cimices in- 

 habit trees, shrubs, and ferns, feeding on the 

 juices of plants and animals, but principally on 

 the larvse of lepidopterous insects; many will 

 be found crawling in grassy places and at the 

 roots of grass, as well as on rushes in marshy 

 situations: some few inhabit beneath the de- 

 tached bark of decayed trees. The Water-scor- 

 pion and Boat-flies are found in the waters, and 

 may be taken by means of the aquatic net. The 

 insects, when captured, should be immediately 

 pierced and placed in the corked collecting box, 

 or put into separate pill boxes, and killed either 

 by sulphur or hot water: as they are very brittle 

 when dry, they should be pierced while in a re- 

 cent state. 



Order 14. APTERA. No wings or elytra ; 

 mouth with a tubular, jointed, sucking rostrum ; 

 body ovate compressed, covered with a coriace- 

 ous skin, and composed of several segments ; 



