EDMUXD H. GIBSON 97 



from base of hood, and without distinct areoles. Costal margins of elytra nearly 

 straight. Spines on membranous margins medium length to long. Xervures 

 of hood with numerous spines, and a few scattered ones on nervures of eh'tra. 

 Length 3 mm., width 1.6 mm. 



All membranous portions hyaline, nervures white except those which are 

 embrowned. Antennae and legs yellow. Anterior portion and crest of hood 

 more or less embrowned. A brown spot at middle of the outer border of para- 

 nota. A distinct brown spot on each tumid elevation of elytra. Two faint 

 brown streaks from the costal margin of elytra on the anterior half. Two 

 faint brown bands across apical half of elytra, appearing sometimes as mere 

 spots. 



Occurs throughout southern United States, Central America 

 and West Indies. Common on cotton and has been captured 

 on Icthyonethia piscipulu. Numerous specimens have been 

 examined. 



41. Corythucha unifasciata Champion 



1901. Corythucha uuifasciala Champion, Biol. Cent.-Amer., Hemip., ii, p. 7. 



Pronotal hood somewhat higher than median carina, but not twice as high. 

 Height of hood shghtly more than one-half its length. Length of hood less 

 than length of median carina. Hood not flattened on top or posteriorly, con- 

 stricted at the middle. Width of globose portion slightly greater than its 

 length, reticulations large. Median carina with one row of areoles and pos- 

 terior half low. Lateral carinas of median size with areoles and short spines, 

 and terminating a considerable distance from base of hood. Costal margins 

 of elj'tra straight. Spines on membranous borders long and stout. Numerous 

 smaller spines on nervures of membranous portions, especially on hood. 

 Length 3.3 mm., width 2 mm. 



General dorsal aspect yellowish brown. Membranous areoles hj'aline, nerv- 

 ures yellow. Antennae and legs yellow. Crest of the hood more or less 

 embrowned. Two bro\ATi spots on paranota. Brown band at base of elytra 

 and a more or less indistinct irregular brown band near apex of elytra. 



A few specimens from southern United States, Mexico and 

 Central America have l)een examined. Food plant imknown. 



42. Corythucha ulmi Osborn and Drake 



1916. Corylhudia pallida var. ulmi Osborn and Drake, Ohio Biol. Surv., ii, 



no. 4, p. 231. 



Hood liigher than median carina, but not twice as high, about equal in length 

 to median carina. Height of hood equals one-half its own length. Lateral 

 carinae rather high but short. Reticulations of hood more than twice the size 

 of those of paranota. Spines on membranous margins and on nervures of hood 

 normal length atid size. Costal margins of elytra straight. Size, 3.3 mm. 

 long, 1.6 mm. wide. 



TRANS. AM. ENT. SOC, XLIV. 

 7 



