SCIENTIFIC SURVEY. ;j9Y 



found in caves, A different species from the maculatus inhabits 

 the island of Grand Manan. 



Acrijdii. The common grasshoppers have large heads, rather 

 short and thick antennae, thick, compressed bodies, and the pro- 

 thorax projects backward conspicuously, aud is often divided by 

 crosswise impressions. The hind legs are stout and thick, adapted 

 to the leaping habits of the insects. 



Locusta corallina appears for about two weeks in May in dry 

 fields. L. sulphurea and Carolina, the " quakers," are fall insects ; 

 80 are the different species of ChloealHs, which survive the frosts 

 till late into November. They produce their chirrping noise by 

 rubbing their thighs on the wing covers. Eed mites are frequently 

 found sucking the juices beneath the wings. The species of 

 Teltix are small, but prodigious leapers, and are characterized by 

 having the prothorax carried out to the end of the abdomen. 

 Toads and frogs devour large numbers of grasshoppers. 



Hemiptera. 



This suborder has been greatly neglected ; these insects are not 

 the favorites of entomologists. In studying the different groups 

 the investigator is aided by the great variation in the general pro- 

 portions of the body ; in the shape and relative size of the head 

 and its appendages. The species are subject to great individual 

 variation, which should caution the student in drawing the limits 

 between them. 



Aquatic species should be taken out by the water-net by thrust- 

 ing it under swiming species, or pushing it among submerged grass 

 or weeds where small species are lurking. Several species of 

 small size are found under logs, &c., in the water. By sweeping 

 grass and herbage as for coleoptera in the last part of the summer, 

 large numbers occur which can only be obtained in this way. Hy- 

 bernating species are found under leaves in hard wood forests. 

 The large carnivorous kinds are found on bushes frequently with 

 lepidopterous larvae transfixed on their jaws. 



The soft bodied species of Aphis and allies should be preserved 

 in alcohol. These species should be carefully watched for their 

 parasites, and can be easily kept in slender glass vials through 

 which the insects can be watched. All hemiptera should be pinned 

 through the distinct triangular scutellum in the middle at the base 

 of the wings. The minute hard species of Tettigoniae, Thrips and 



