48 ELEMENTARY LESSONS ON INSECTS 



2. With a snowy-tree cricket in hand, compare again, 

 noting especially: 



(a) The pale color and delicate structure of the insect. 



(b) The greater breadth of the fore wings in the male 

 than in the female (due to development of the 

 "sounding board" area of the wing in this, the 

 most persistent performer among all Orthopterous 

 choristers). 



3. With a mole cricket in hand, compare again, noting 

 especially those adaptations that fit this cricket for life 

 as a burrower in the soil : 



(a) The narrow and more pointed head. 



(b) The shorter, reversible antennae. 



(c) The enormously enlarged digging fore legs, with 

 stout femora; toothed and flattened, scraperlike 

 tibiae; and dangling, almost rudimentary tarsi. 



(d) The appressed, pushing hind legs. 



(e) The reduced wings. 



For information concerning other crickets, of which there 

 are many sorts, consult the larger textbooks. 



IV. Orthoptera Allies. 



1. With a cockroach in hand note a very different type 

 of structure, viz. : 



(a) A flat body with the head tucked underneath the 

 front of the prothorax. 



(b) Legs all fitted for running, close together at their 

 bases, tibiae loosely spined. 



