CATALOGUE OF INSECTS. 163 



always blade-like and flattened. The field crickets are usually black or brown 

 in color and live in damp places in fields and meadows, jumping readily and 

 somewhat erratically. They are often very common on cranberry bogs and 

 have been charged with eating into fruit ; but I have never convinced myself 

 that they actually do so until it is picked. I have found them under berry 

 crates with partly eaten fruit, but this eating was different from that done on 

 the vines. The shrill music of the cricket is well known and some species 

 come occasionally into houses. The eggs are laid into dry sandy soil late in 

 fall, though some forms winter in the adult stage. As a rule they are omniv- 

 orous and occasionally cannibalistic. 



The "tree crickets" are white or green in color as a rule, sometimes light 

 reddish or yellowish brown, and as the name indicates they are found on trees 

 and shrubs. These are predatory, feeding largely on plant-lice, and therefore 

 beneficial ; unfortunately they lay their eggs in series into soft woody tissue 

 like the shoots of plum, raspberry, &c, and thus do almost as much harm as 

 good. They have never been seriously troublesome in my experience, and per- 

 haps it is a good scheme to do pruning with an eye to cutting out and destroy- 

 ing their egg masses. 



TRIDACTYLUS Oliv. 



T. terminalis Scudd. Atlantic Highlands, VI (Bt), Staten Island, VI to IX 



(Ds), Clementon, V, 30 (Jn), Ocean County (Sm). 

 T. apicalis Say. Not actually recorded from New Jersey ; but should occur. 



GRYLLOTALPA Latr. 



G. borealis Burm. The "mole-cricket" : lives in dams and along ditches, 

 and has been recorded as injuring potatoes. Caldwell (Cr), Fort Lee, 

 August until frost (Ds). Bordentown, VII, Anglesea, VI (Sm), High 

 Bridge (Ss). 



G. Columbia Scudd. Habits like the preceding. Fort Lee, VIII (Bt i, Staten 

 Island, August until frost (Ds). 



GRYLLUS Linn. 



G. abbreviatus Serv. Common everywhere (Bt), Staten Island, maturing in 

 summer and fall (Ds), Caldwell (Cr), on cranberry bogs, where it is 

 supposed to eat into fruit, and almost everywhere, in fall iSm), West- 

 ville, VIII, 19 (Rehn). 



G. domesticus Linn. The "Cricket on the hearth": an imported species 

 said to be rare near New York (Bt), and also to occur in New Jersey. 



G. luctuosus Serv. Staten Island, maturing in spring and earl}' summer (Ds). 

 Caldwell (Cr). 



G. pennsylvanicus Burm. Newark, New Brunswick, Jamesburg on cran- 

 berry bogs (Sm), New Jersey (Ss). 



G. neg-lectus Scudd. Caldwell (Cr), New Jersey iBt>, Ocean County on 

 cranberry bogs (Sm). 



The relation of these species to each other is by no means satisfactorily settled. 



