HEMIPTERA. 



127 



small, with com- 

 eyes, but no ocelli. 



condition is shown in their forms, wingless bodies, and 

 habit of concealing themselves in bed-clothing, etc., 

 instead of flying and hunting freely. 



CIMICID.K. 



The bed-bug, Cimex lectulariiis, Linn. (Fig. 75, ■^), 

 has a flattened body. The 

 head is 

 pound 



The mouth parts are well 

 developed.^ 



The fore part of the pro- 

 thorax (/^') is scooped out 

 for the reception of the 

 head, so that its sides may 

 extend forward to the eyes. 

 The connection of the pro- 

 thorax with the mesothorax 

 is neck-like, allowing con- 

 siderable freedom of motion to the prothorax and 

 head. The portion of the small mesothorax (//') 

 that is seen from above is triangular in shape, and 

 bears the remnants of fore-wings (Fig. 75, w^) which 

 are merely scales. The form and position of these 

 scales is quite different from anything before described. 

 They broaden out towards the median line instead of 

 extending backward, and are placed close to the body, 

 so that at first sight they appear to be the metathorax. 

 They really cover the metathorax, which is crowded 



^ For figures of these organs, see Graber, Die ausseren me- 

 chanischen ]Verkzeii9e der IVirbeliiere, 1886. 



