THE INSECTS OF NEW JERSEY. 337 



O. gracilis Fab. Jamesburg VII (div) ; Lakehurst (Jl) ; DaCosta VII 

 (div); Manumuskin VI, Brown's Mills VIII (Dke); Atco, Anglesea 

 (W). 



O. ruficollis Fab. Throughout the State VI, VII, on sumac and sassafras. 



TETROPS Steph. 

 T. canescens Lee. Gloucester County, one specimen on alder (W). 



TETRAOPES Serv. 



T. canteriator Drap. Throughout the State; local; on milkweed. 

 T. tetraophthalmus Forst. Common everywhere VII-IX, on milkweed. 

 One of the commonest species of the family. 



AMPHIONYCHA Lee. 



A. flammata Newn. Orange Mts., rare (Bf ) ; "New Jersey" (Lg). 



DYSPHAGA Lee. 



D. tenuipes Hald. Westville, two specimens (W) ; bred from red-bud 

 (Ch), and recorded also from hickory and walnut. 



Family CHRYSOMELID^E. 



These are the "leaf-beetles," having the same tarsal structure as in 

 the "Cerambycidae"; but with antennae rarely as long as the body, the 

 joints comparatively stouter and larger toward the tip. The species are 

 rarely cylindrical and the thorax has usually either a lateral margin or 

 a distinct suture. 



The larvae are "slugs" or "grubs," often stout and chunky like those 

 of the potato beetle and feeding on leaves, or they may be long and slen- 

 der, mining in root or leaf tissue. They vary much in habit, although 

 always feeders on vegetable tissue, and many of them rank among the 

 first-class pests. As against those that feed openly, the arsenites are 

 usually available; but there are some that must be dealt with in other 

 ways, depending on their habits. 



DONACIA Fabr. 



D. harrisii Lee. Newfoundland in a damp meadow (Lg). 

 D. floridas Leng. Quick Pond VII, 30 (Lg) ; Hammonton, Tuckerton, 



Bamber VIII, 23, 24 (Dke) ; very local but common where it occurs. 



All the species of this genus live on or in water plants, and are 



usually found on lily pads or other pond vegetation. 

 D. cincticornis Newn. Staten Island (Lg) ; Clementon VIII, Atco VI, 



DaCosta VII (W) ; Tuckerton VIII, 24 (Dke) ; Sea Isle V, 24, Anglesea 



VII (Brn). 

 var. proxima Kirby. Throughout State, more common and widely 



distributed than the type form. 



D. palmata Oliv. Throughout the State V. VIII; usually common. 

 D. hypoleuca Lac. Hopatcong (Pm) ; Spring Lake VIII (Ch); New 



Brunswick (Coll); Clementon VII, 6 (Horn). 



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