304 REPORT OF NEW JERSEY STATE MUSEUM. 



species is responsible for the gradual destruction of the sinuate pear 

 borer, which needs two years to attain full growth, and is long in 

 the helpless pupal stage. The variety "onusta" Say. is less frequent 

 than the type. 



The records of "C. vestita" Spin, and "C. dichroa" Lee. are based on 

 erroneous data. 



CREGYA Lee. 



C. vetusta Spin. Highlands (Dietz) ; Westville (Li); g. d. (W) ; rare. 

 C. oculata Say. Throughout the State VI-VIII; locally not rare. 



ORTHOPLEURA Spin. 



O. damicornis Fabr. Hopatcong (Pm) ; Palisades, Staten Island III, 16 

 (Jl) ; Boonton VII, 17, Malaga VII, 20 (GG) ; Orange Mts., Newark 

 (Bf); Woodbury VII, 30, Collingswood VIII, 2 (Brn) ; not common. 



LARICOBIUS Rosen. 



L. erichsoni Rosen. Orange Mts., rare (Bf ) ; Staten Island (Lg). 



NECROBIA Latr. 



N. rufipes Fabr. The "red- 

 legged ham beetle" ; occurs 

 throughout the State, is cos- 

 mopolitan and found on dry- 

 ing meats, carrion, bones, 

 fish, cheese, etc. (Ch). 



N. ruficollis Fabr. With the 

 preceding, and much more 

 common. 



N. violacea Linn. Same, habits 

 and distribution as before 

 and easily recognized by the uniform blue coloration. 



Fig. 118. Red-legged ham beetle, Necrobia 



rufipes: a, larva; b, pupa; c, cocoon; d, e, 



beetle; natural size and enlarged; 



f to j, structural details. 



Family PTINID^E. 



A very interesting group of beetles, varying so greatly in form that no 

 superficial description is sufficiently comprehensive to include all. They 

 are hard in texture, and the elytra, which may be smooth, striate, shining, 

 hairy or scaly, are not abbreviated, but cover the abdomen. The head 

 is usually bent under, the antennae are slender, sometimes evenly serrate, 

 but more usually with a prominent serrate, lamellate or pectinated club. 

 They live on dry animal and vegetable products, and some of them bore 

 into the furniture and woodwork of houses, to their material injury. All 

 sorts of things from Belladonna roots to cigars and gunwads are attacked 

 and serve as food. 



The larvae occur with the adults, and are soft, white, grub-like creatures 

 resembling miniature white-grubs, but covered with short stiff hair or 

 bristles. 



