EDMUND n. GIBSON 81 



smaller than porshleyi and has the apical band straight across 

 the elytra, while in ])arshley'i the apical band runs obliquely from 

 the costal margin toward the inner margin of elytra and is nar- 

 rower. 



Pronotal hood at least twice as high as median carina -mth its height fully 

 two-thirds its own width. Length of hood not noticeably longer than median 

 carina, sometimes slightly so. Reticulations of hood very large, more than 

 twice the size of those of the paranota. Spines normal, rather short. Costal 

 margin of eh'tra nearly straight. Size 3.3 mm. to 3.8 mm. long, 2 to 2.3 mm. 

 wide. 



General aspect above yellow or light brown. A light spot on paranota, 

 sometimes a faint second one. Brown band across base of elytra and another 

 across elytra near ai^ex. Anterior border of apical band straight, not slant- 

 ing from inner margin of elytra to costal margin. 



The type, a male without locality data, in the U. S. National 

 jMuseum, and a fine series in the Parshley collection have been 

 examined. The species occurs throughout New England and 

 south and west to Kansas and Texas. Its food plants include 

 walnut, butternut, and linden. 



8. Corythucha distincta Osborn and Drake 



1916. Corythucha disliiicta Osborn and Drake, Ohio Journ. Sci., xxvii, p. 13. 



1917. Corythucha distincta var. spinata Osborn and Drake, Ohio Journ. Sci., 

 xxvii, no. 8, p. 301. 



Hood at least twice as high as median carina. Length of hood slightly, 

 if any, less than length of carina. Height of hood equals one-half or more 

 its own length. Median carina long, not prominently arched, and with two 

 rows of areoles. Spines on membranous margins and nervures of moderate 

 length. Reticulations of hood not more than twice the size of those on paranota. 

 Lateral carinae large with distinct areoles, and terminating near base of hood. 



Hood embrowned. Two prominent bro^Ti spots on paranota the hind one 

 being the largest. Distinct brown band.s across base and apex of elytra. 

 Apical band with two or thi-ee hyaline areoles. A small brown spot at center 

 of costal margin of elytra. Size, 4 mm. long, 2.41 mm. wide. 



A paratype antl fifteen specimens in the Drake collection have 

 been examined. Type and parat>'pe specimens are from Col- 

 orado. Messrs. Osborn and Drake state that specimens were 

 taken on Carduus lanceolatns by A. O. Larson in Utah. The 

 range of the species is known to include Washington, ^fontana, 

 Wyoming, Colorado, I'tah and California. The variety spinata 

 of the same authors I cannot give varietal rank, as the type speci- 

 men differs only in being slightly larger and darker. The speci- 

 mens in the Drake collection determined as distincta var. spinata 



TRANS. AM. ENT. SOC, XLIV. 



