138 Annals Entomological Society of America [Vol.1, 



segments below. In such cases the spots on the abdomen above 

 may all but disappear, except those on the sixth segment. 



Rhopalus punctiventris Dallas and Corizus novaeborecensis 

 Sign, should undoubtedly be referred to this species. Specimens 

 from the east and from the west have been carefully conipared 

 with European specimens kindly sent by Dr. Horvath from Hun- 

 gary. They are identical in all structural characters and do not 

 differ more in color than do individuals taken in the same locality. 



This is also a cosmopolitan species. Oshanin reports it as 

 follows: All of Europe, Canaries, Tunis, Syria, all of Russia, 

 Caucasia, Turkestan, Siberia and Japan. Uhler in various papers 

 reports it from Colorado, Arizona, California, Washington, British 

 America, Walrussia, Canada, Massachusetts, Pennsylvania, New 

 York, Mackenzie River, Yukon, Saskatchewan and Lower Cali- 

 fornia. Specimens are at hand from Washington, Oregon, Utah, 

 British Columbia, California, Wyoming, South Dakota, Ohio, 

 New York, and New Hampshire. 



Corizus viridicatus Uhler. 

 Corizus viridicatus Uhler, Havden's Survey of Montana, IV^. Zool. and Bot., 



p. 404 (1872). 

 Corizus hyalinus Uhler, Geolog. Bull. II, No. .5 (1875), pp. 34 and 35. 



A slender species, often greenish in color with the black spot 

 on sixth segment c^uite prominent. Length of female, 5.5 to 6 

 mm., width 2 to 2.5 mm. Male, length 5 to 5.5 mm., width 

 1.8 to 2 mm. 



The head pronotuni and scutelluin of this species closely resemble those of 

 its near relative, crassicornis. They are, however, smaller, and the scutellum 

 has its narrowest portion a little farther from the apex. The abdomen is but 

 little wider than the thorax, and hence the sides are very nearly parallel. 



Genitalia: Dorsal plate of female broadly rounded; 'ventral plate compress- 

 ed laterally, uniform in width, posterior angles but little rounded. Dorsal plate 

 of male broadly rounded; ventral plate much narrower at its middle point, and 

 angles rounded. Wings a little longer than the abdomen, and opaque, thus 

 hiding the abdominal picture except the anal spot. Pubescence soft and punc- 

 tuations small. 



Color: Light gray, often tinged with green, both above and below. This 

 color, while predominant in the species, is not universal. Occasionally a speci- 

 men may be found with the thorax above, all black, except the scutellum, and 

 the body below a reddish yellow. A broad stripe on basal segment of antennae, 

 ocellar tubercles and a line between them and the eyes, black. Transverse 

 suture and disk of abdomen ttsually black. Two broad stripes on last segment 

 of abdomen and three spots about the middle of the disk, light. It is not un- 

 common to find specimens with the light color predominating on the disk, and 

 all color may disappear except the spot on last segment. 



This species was described by Uhler in 1872, but later, in 1875, 

 he abandoned it, having come to the conclusion that it was but a 

 variety of hyalinus. It now seems best to revive it as it certainly 



