No. 1 6.] 



INSECTS OF CONNECTICUT. 



21 



Merriam's map, and references to these zones will be found in 

 the forthcoming papers. The reader will notice that the Upper 

 Austral extends over a narrow area along the coast and 

 up the Connecticut River beyond the northern boundary of the 

 state, and that the remaining portion is Transition. Very little 

 field work has been done in Connecticut to establish the limits 

 of these zones ; but we find that certain species occur along the 

 valleys of the Housatonic, Naugatuck, and Quinnipiac Rivers 

 much farther north than the limits of the Austral zone as shown 

 by the map. As these species do not occur in other Transition 

 portions of the state, it is expected that the map must be modified 

 considerably after further study of the plants and animals. 



Fig. I. Map of Connecticut showing the Life Zones in the State. The shaded 

 portion represents the Upper Austral, and the unshaded portion the Transition. 

 (Adapted from the map of Dr. C. Hart Merriam.) 



ECONOMIC STATUS OF INSECTS. 



Man is accustomed to classify insects as injurious or bene- 

 ficial to human interests. In general, people regard insects as 

 being injurious, and give them little credit for the benefits which 

 mankind derives from them. A few years ago Dr. L. O. 



