ENTOMOLOGICAL REPORT. 



Brunswick, December 28, 1862. 



To the Gentlemen in charge of the Scientific Survey : 



I transmit herewith some instructions about collecting and ob- 

 serving the insects of our State, which will, I hope, lead to an 

 extended cooperation in furthering the knowledge of the habits and 

 forms of our noxious and beneficial insects. 

 Very respectfully. 



Your obedient servant, 



A. S. PACKARD, Jr. 

 Dr. E. Holmes, 



Prof C. H. IIlTCHCOCK. 



HOW TO OBSERVE AND COLLECT INSECTS. 



Insects in General. 



That branch of the Animal Kingdom, known as Articulata, is so 

 called from having the body composed of rings, like short cyhn- 

 ders, which are placed successively one behind the other. In the 

 class of Worms these rings or segments, are arranged in a contin- 

 uous row, and their number is indefinite. The organs of locomo- 

 tion consist of branches of cilia and bristles placed in a row, one 

 on each side of the body ; while on the first ring there are slender 

 feelers directed forwards and placed around the mouth-opening. 

 In the class of Crustacea this continuity of rings is broken ; and 

 there is a definite number, (21) which are gathered into two re- 

 gions ; the head-thorax and abdomen. The number of jointed legs 

 is also indefinite, the number varying from ten to fourteen. In the 

 class of Insects, the number of rings is still more limited, (14,) the 

 head is distinctly separated from the thorax, thus forming, with 

 the abdomen or hind-body, three distinct regions. 



