204 THE CANADIAN ENTOMOLOGIST 



minal segment. Eyes prominent. Antennae reddish brown, about 

 one-half the length of the body. Legs reddish brown except coxa, 

 trochanter, basal portion of femur, apical end of tibia and base of 

 tarsus which are light. Femur and tibia bearing hairs. Rostrum 

 extending to second pair of legs. 



Second stage nymph. — Length 1.72 mm., width of head in- 

 cluding eyes 0.46 mm. Similar to first stage but slightly darker. 

 Median line indicated on dorsal surface. 



Third stage nymph.- — Length 2.1 mm., width of head including 

 eyes 0.5 mm. Similar to preceding stage but slightly darker. 

 Dorsal surface of thorax depressed. Sides of mesothorax extend- 

 ing half w^ay through metathorax. Metathorax extending slightly 

 at sides. Antennae two-fifths the length of the body. 



Fourth stage nymph. — Length 2.8 mm., width of head includ- 

 ing eyes 0.7 mm. Similar to third stage but darker. Light 

 median dorsal line indicated on abdomen in some specimens. 

 Wing-pads of equal length, decidedly more pronounced, narrow, 

 extending to the third abdominal segment. 



Fifth stage nymph. — Length 3.5 mm., width of head including 

 eyes 0.75 mm. Dorsal surface dark, reddish brown. Fine median 

 line on front and dorsal surface of head and thorax. A light patch 

 on each side of line on head. Median posterior portion of meso- 

 thorax white. Surface of metathorax white, tinged with brown. 

 Wing-pads of equal length, long, narrow, reaching fourth abdominal 

 segment. Fine, median, dorsal line indicated on abdomen. Eyes 

 prominent. Antennae reddish brown, basal joints darker, one- 

 third length of body. Legs, light reddish brown, lighter at base 

 of femur and tip of tibia. Coxa and trochanter white. Rostrum 

 white, reaching to between second pair of legs. 



Adult. — Empoasca trifasciata Gillette. The description of this 

 species by Gillett'^ in "American Leaf-hoppers of the Subfamily 

 Typhlocybinae" (Proc. U. S. Nat. Mus., vol. XX, p. 72G) fol- 

 lows: "Pale green, with three transverse, smoky bands above. 

 Length 4 mm. Face golden yellow above, shading into green on 

 the clypeus, with a broad, whitish, median stripe; face fully as 

 long as broad. Front with sides nearly parallel, two-thirds longer 

 than broad between the eyes, very obtusely rounded above. 

 Clypeus about one-third longer than broad, a little less than one- 



