404 FoRTT-siXTH Report on the State Museum [64] 



FAMILY PSYLLIDJE. 



PSYLLA. Geof. 



" Three-dotted Psylla, * P. tripunctata. Wax-yellow, dorsum 

 black; legs and antennae pale yellow, the latter black at the 

 tips; elytra hyaline, nerves brown, beyond the furcation 

 widely margined with smoky-fulvous, a blackish dot on the 

 middle of the terminal margin of each of the ioner apical 

 cells. Length 0-16. No. 8.30, female. 



Four-lined Pyslla, *P. quadrilineata. Bright fulvous; elytra 

 hyaline, nerves blackish; four whitish longitudinal lines on 

 the middle of the metathorax; abdomen black with a yellow 

 band at its base. Length, 0-12. No. 831, female. 



Hornbeam Psylla, *P. carplnl. Light-green or greenish yellow; 

 elytra hyaline, nerves light-green. Length, 0-16. Common 

 on the hornbeam, in July. No. 832, male; 833, female. 



" Annul ated Psylla, *^. annulata. Straw yellow; legs white; 

 elytra hyaline, nerves straw y ellow ;-; antennae black, basal 

 half straw-yellow annulated with black. Length, ' 15. Occurs 

 on the sugar-maple. No. 834, male; 835, female. 



LIVIA. Lat. 



Vernal Livia, *X. vernalis. Bright ferruginous; pectus and tips of 

 antennae black; legs ferruginous-pallid. Length, 0-15. Found 

 in spring in vessels of sap of the sugar-maple. No. 836, male; 

 837, female. 



Black-legged Livia, *X. femoralis. Bright ferruginous; pectus, 

 four forward femurs and tips of the antennae black. Perhaps 

 not distinct from the preceding. Length, 0'15. Taken on a 

 pine tree, in July. No. 838, female. 



