52 Journal New York Entomological Society. t Vo1 - xxvii. 



place it was customary to place camphor balls in with the seed after 

 it has been collected and stored, it being believed that this prevented 

 further infestation. We have no evidence, however, for assuming 

 that the beetles reinfest stored seed. If they do, keeping the seeds 

 in a cool temperature would prevent development. 

 Chsetocnema quadricollis Schwarz. 



This species was first noted by us during the summer of 1916 at 

 Arlington, N. J., where it was very abundant on the foliage of hibis- 

 cus in a nursery. Numerous specimens were recently submitted to 

 Mr. C. W. Leng, who after an examination of them, very kindly 

 supplied us with the following note : 



"This species is described by Dr. Horn (Trans. Am. Ent. Soc, 

 XVI, 1889, p. 267) as having the head impunctate, piceous black with 

 faint aeneous luster, antennae entirely rufotestaceous. In the series 

 collected at Rutherford, N. J., on rose-mallow by Weiss and Dicker- 

 son, the head like the pronotum has feebly impressed punctures, as 

 well as the microscopic punctulation that causes the surface called 

 alutaceous by Horn, but they are more distant and hardly apparent 

 except at sides. Florida specimens collected by Mr. Schwarz also 

 show a very few such punctures ; and the Horn description requires 

 modification. The color in the New Jersey specimens varies, many 

 having not a faint but a very decided aenous luster; the last joint of 

 the antennae is often fuscous and the hind femora instead of being 

 sometimes slightly darker are usually decidedly piceous externally. 



"In the original description by Schwarz (Proc. Am. Phil. Soc, 

 xvii, 1878, p. 368) the color is given as aeneous above head and thorax 

 brassy, antennae and legs bright testaceous red, hind femora more or 

 less infuscate. The head is described as having a few scattered 

 punctures. Dr. Horn's description, therefore, departs from the orig- 

 inal as well as from the facts. The New Jersey specimens seem on 

 the whole slightly different to the Florida ones, but not sufficiently 

 so as to require a name." 



Since 1916 we have found this flea beetle to be present at the fol- 

 lowing localities in New Jersey: Hammonton, July 8; Rutherford, 

 June, July 13, Sept. 15; Eatontown, Aug. 28; Ridgefield, July 22; 

 South Orange, Aug. 3; Westville, Aug. 23; South Amboy, Aug. 17, 

 and Little Silver, August, occurring on plants growing on the marsh 



