EDMUND H. GIBSON 101 



A few Specimens from Central America liave been examined. 

 Its occurrence seems to be restricted to Mexico and Central 

 America. Food plant unknown. 



48. Corythucha floridana Heidemann 



1909. Conjlhuchu floridana Heidemunn, Bull. Buffalo Soc. Nat. Sci., ix, p. 



236. 



This species is easily recognized by its minute size, being the smallest species 

 in the genus. Pronotal hood only slightly higher than median carina. 

 Height of hood about one-half its own length. Median carina slightly shorter 

 than hood. Reticulations of hood large. Spines on membranous margins 

 normal, not abundant. Costal margins of elytra straight. Size, 2.4 mm. long, 

 1.2 mm. wide. 



Nervures of hood slightly embrowned. Paranota with one faint brown spot. 

 A light brown band across base of elytra and a mere trace of one across apex. 

 Nervures only in apical band embrowned, areoles hyaline. 



Type and allotype, from l^artow and Biscayne Bay, Florida, 

 and several other specimens from Floi'ida examined. Mr. Heide- 

 mann reported the species as being taken on Cephalanihus. It 

 is also known to occiu' on oak. 



50. Corythucha caelata Uhler 



1894. Conjllnuiui caelata Uhler, Proc. Calif. Acad. Sci., iv, p. 279. 



Pronotal hood only slightly higher than median carina. Height of hood 

 less than half its length. Length of hood less than length of median carina. 

 Hood constricted at the middle. Globose portion spherical, anterior portion 

 long and narrow. Reticulations of hood small, same size as those of paranota. 

 Lateral carinae as high as or higher than median carina, with areoles, and 

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

 elytra slightly concave. Outer si)ines along costal borders of elytra and bor- 

 ders of paranota and on anterior portion of hood long tipped with l)lack. 

 Length 3.5 mm., width 1.9 mm. 



Above whitish or cream. Membranous portions hyaline, nervures white. 

 Faint brown spot behind each tumid elevation of elytra and one in each ante- 

 rior-lateral angle of el>i:ra. Nervures near apex of elytra slightly and irreg- 

 ularly tinged with brown. 



Occurs in the Pacific Coast States and Mexico. Has been 

 recorded upon apple. Type and many specimens have been 

 examined. 



51. Corythucha arcuata Say 



1832. TliiXjU arcuata Say, Hem. New Harm., p. 27. 



1903. Corythucha arcuata Morrill, Psyche, x, pp. 127 to 132. 



Pronotal hood only slightly higher than median carina; height .slightly less, 

 if any, then one-half its length. Length of hood and median carina about 



TRANS. AM. EXT. SOC, XLIV. 



