LEAFHOPPERS OF MAINE. 99 



DD. Antennae in the male enlarged at apex. Pronotum more 

 rhan twice as long as the scutellum, posterior margin 

 5hort, somewhat emarginate. Helochara. 



'CC. Vertex flat, the margin sharp or line-marked, distinct, vertex 

 and front forming an acute angle, front broadly trans- 

 versely convex, not inflated. Diedrocephala. 

 BB. Elytra reticulate veined from the apex as far back as the fork- 

 ing of the outer branch of the first sector. Head often 

 produced into a triangle, longer than pronotum. 



Drae enlace phala. 



Oncometopia lateralis Fabr. 



Cicada lateralis Fabr. Ent. Syst. sup. p. 524. 



Oncometopia lateralis Ball, Iowa Acad. Sci. Proc. VIII, p. 44. 



This species is dark, nearly black, the elytra purplish with yellow 

 lateral line and markings on the head and thorax. Length 7-8 mm. 



The larvae are black with yellowish white stripes, the wing pads tinged' 

 with purple. Head in front with irregular black and white mottlings, a 

 light stripe starting at the vertex runs to tip of anal segment and a 

 broader stripe each side runs from next the eye across pronotum to 

 bases of wing pads along side of abdomen to apex of penultimate seg- 

 ment, outside of which there is a marginal white stripe. A light stripe 

 on border and disk of wing pads ; lower part of face black with yellow 

 dots ; thorax and abdomen beneath black with submarginal stripe yellow, 

 legs black lined with yellow. 



These markings are characteristic of all the moults observed and 

 agree in the main with the color pattern of the adult. The nymphs 

 develop evidently during the early summer months as they were t^ken 

 up to August. Their food plant is not certainly determined, but two 

 nymphs were taken on birch July 30th. 



Specimens in the Station collection bear records of Orono June 7, 12, 

 27, 1905, July 2 and 21, 1905, and I took it in 1913 at Houlton Aug. 24th, 

 Mars Hill Aug. 25th, and Fort Kent Aug. 28th, in bog and low ground. 



This is a northern species and it may be expected throughout most 

 of the state, but unless in greater numbers than observed so far it can 

 not be considered of great economic importance. 



Kolla bifida Say. 

 Tettigonia bifida Say. Acad. Nat. Sci. Phila. Jour. 1831, 4. 



A handsome species with conspicuous black and white transverse 

 bands on head and longitudinal stripes on the elytra. Length 6 mm. 



This is one of the species that we would expect to find generally 

 over the state, but I have taken it only near Portland (Stroudwater Aug. 

 13), (Riverton Park) Aug. 14th. There is a specimen in the Maine 

 Experiment Station collection with record of collection at Pushaw Pond. 

 Possibly it reaches its North Eastern limit in this region. 



