98 THE COCKROACH [CH. Ill 



body 2026 mm., anterior feet adapted for walking; spines of 

 posterior tibiae stout and immovable ; posterior tarsi grooved 

 above and serrated at the sides. Wing-covers well developed 

 and with a yellow spot at the base. Flight-wings shorter 

 than the covers. In hot sandy places through the summer. 



Oryllus domesticus, the House Cricket, resembles the last species 

 in all chief structural points, but is paler in colour and has 

 brownish wing-covers, the flight-wings are fully developed- 

 and longer than the abdomen. The length of the body is 

 only 16 20mm. This species frequents the neighbourhood 

 of fireplaces and ovens the Cricket on the Hearth and may 

 be found in all stages at all seasons of the year. It is far 

 less common than formerly and is perhaps being ousted by 

 the Cockroach. 



Gryllotalpa gryllotalpa, the Mole Cricket ; reddish brown with 

 darker markings, length of body 35 50 mm. ; anterior feet 

 adapted for digging ; the female has no projecting ovipositor. 

 Lives in holes in the ground ; is found chiefly in the southern 

 counties but is not common ; feeds on roots and also on 

 animal substances. The chirrup is to be heard on warm 

 evenings in the spring and early summer. 



