December, '19] WEISS AND DICKERSON: MACROPSIS VIRESCENS 439 



Each abdominal segment bears a pair of posteriorly directed, median, dorsal spines 

 with united base. Minute, posteriorly directed spine arising from lateral margin of 

 each abdominal segment; one or more longitudinal rows of fine spines on abdomen 

 between median-dorsal and lateral rows; few, minute spine-like hairs on posterior 

 end. Tibia and tarsus bear number of minute, spine-Uke hairs. Ventral surface 

 light; rostrum extending to beyond bases of second pair of legs. 



Second Nymphal Stage. — Length, 1.6 mm.; width of head, including eyes, 0.5 

 mm. Somewhat similar to preceding stage in color, shape and armature. Shape 

 slightly broader. Color light brown with darker bands extending longitudinally from 

 anterior to posterior end between lateral margin and dorsal ridge. Armature more 

 pronounced, similar to that of preceding stage except for an additional, smaller spine 

 and indications of another on the lateral margins of the abdominal segments anterior 

 to spine noted in first nymphal stage. Ventral sm-face light; coxa and femur lighter; 

 rostrum similar to that of first stage, lancets on most specimens extending beyond tip 

 of rostrum. 



Third Nymphal Stage. — Length, 2.2 mm.; width of head, including eyes, 0.75 

 mm. Somewhat similar to second stage, slightly broader, especially at posterior part 

 of thorax. Lateral margins of thoracic segments, especially that of mesothorax 

 slightly expanded. Lateral, posterior margins of mesothorax partially cover those of 

 metathorax. Dorsal thoracic surface tending to become rounded. Abdominal 

 segments maintaining median ridge, especially in posterior portion where it is quite 

 acute. Color darker, broad bands noted in preceding stage prominent in some speci- 

 mens and in others so suffused as to leave lighter shade along median, dorsal ridge. 

 Eyes lateral, globular, prominent. Armature somewhat similar to that of preceding 

 stage, all spines more prominent; hair-like spines on legs more prominent; spines on 

 outer surface of tibia forming rows along anterior and posterior margins. Ventral 

 surface light; legs similar in color to brown of dorsal surface; rostrum similar to that 

 of j)receding stage. 



Fourth Nymphal Stage. — Length, 3.2 mm.; width of head, including eyes, 0.89 

 mm. Similar in color and shape to that of third stage except for the head which is 

 shorter, being four to five times as broad as long. Spines on head less prominent. 

 Sides of meso- and metathorax extending posteriorly so that lateral lobes of meso- 

 thorax cover much of metathoracic lobes wliich extend into the second abdominal 

 segment and partially cover sides. Several spines on lateral margin of mesotlioracic 

 lobes. Minute spines along lateral margin of abdomen increasing in number. Me- 

 dian ridge decidedly acute on abdomen, more so toward posterior end. Otherwise 

 similar to third stage nymph. 



Fifth Ny.mphal Stage. — Length, 4.2 mm.; width of head, including eyes, 1.3 mm. 

 Elongate-elliptical. Head, dorsal surface of thorax and abdomen, tibia and tarsus 

 reddish-brown (some specimens lighter with two longitudinal bands prominent); 

 posterior parts of body darker in some specimens. Eyes more i)rorninent, aiitennsB 

 similar to those of preceding stages. Wing pads of mesothorax extcntl |)ostcriorly 

 and cover outer portion of those of metathorax. Botli pairs extend to lateral tnargin 

 of second abdominal .segment. Dorsal median ridge i)roniiii(Mit and darker on top. 

 Armature similar to that of preceding .stage, dorsal, niedian spines less prominent. 

 Number of minute spinelike points on ventral surface. Rostrum similar to that of 

 fourth stage. Circle of hairs bordering anal opening. Sexes distinguishable in this 

 stage. Otherwise similar to preceding stage. 



Adi'lt. — ^[acTopsis virescetis var. graminei Fabr. 'I'he following is the original 

 description from Ent. Syst. Suppl., 1798, p. 521. "Cicada graminoa. viridis capitc 



