EDMUND H. GIBSOX 89 



23. Corythucha fuscomaculata St;\l 



1858. Tingis fudComaculaUi Still, Rio Hem., i, p. 63. 

 1873. Corythucha fuscomaculata StS,l, Eiium., iii, p. 123. 



Pronotal hood slightly higher than median carina, and noticeably longer; 

 its height equals more than one-half its own length. IMedian carina well 

 arched, almost as much as in gossypii Fabr. Lateral carinae small. Reticula- 

 tions of hood very large. Costal margins of elj^tra nearly straight. Spines 

 on membranous margins and nervui-es rather long and numerous. Length 

 3.6 mm., width 2.2 mm. 



Nervures of hood embrowned. Two distinct brown spots on paranota. 

 Brown band across base of elytra and another across elytra just behind the 

 large apical cells, which are entirety hyaline. Two or three cells in apical band 

 entirely hyaline. 



Two specimens from Brazil in the National ^Iiiseum collection 

 have been examined. Food plant unknown. 



24. Corythucha coloradensis new species 



Pronotal hood higher than but not twice as high as median carina; one-half 

 to two-thirds as high as its own length. Length of hood noticeably longer than 

 median carina. Median carina arched, with but one row of large areoles. 

 Reticulations of hood large. Spines on membranous margins rather small, 

 scarce on nervures. Size, 3.8 mm. long, 2 mm. wide. 



Crest of hood more or less embrowned. Light brown spot on paranota. 

 Brown band across base and apex of elytra. Apical band about one-fourth 

 the length of elytra and directed forwards along inner border. Areoles in 

 apical band only partially hyaline, none entirely so. 



Type. — 9 , Platte Canj'on, Colorado. (Dyar and Caudell, 

 May 20, 1901.) (Collection of United States National Museum.) 

 AUoty])e. — cf , same data as type. Paratype. — cf, same data as 

 type. 



The above mentioned sjiecimens were taken from poison oak. 

 A single specimen is at hand from Wawawai, Washington, and 

 one from Bad Lands, Sioux County, Nebraska, in the Barl)cr 

 collection, has been examined. 



25. Corythucha elegans Drake, new species 



Pronotal hood at least twice as high as median carina and considerably 

 larger. Height of hood more than half its own length and di.stinctly greater 

 than length of median carina. Crest of hood more or less angulate. Median 

 carina well arched. Lateral carina normal, with areoles. Reticulations of 

 hood about twice the size of those of paranota. Costal margins of el>1ra nearly 

 straight. Spines on membranous margins small and numerous, numerous on 

 nervures of hood. Size, 3.5 mm. long, 2 mm. wide. 



TRANS. AM. ENT. SOC, XLIV. 



