10 
LESTES 273 
Each mesepisternum with a small, superior, antehumeral black 
spot (young), or entirely black (old age)........ sigma, p. 277 
Each mesepisternum with a metallic green stripe one-fifth to one- 
eighth as wide as the mesepisternum itself..... forficula, p. 280 
Basal half of the first abdominal segment yellow. Stigma always 
surmounting less than three cells. Length approximately 35 
TL NA RS ea cs CAR © er ho TE ce uncatus, p. 278 
Basal half of the first abdominal segment black. Stigma usually 
surmounting three or more cells. Length 43-47 mm.......... 
Sait) Ge eel ak, Det Mili ans. Ape Mie ox BS PEW ished: een vigilax, p. 279 
Metepimeron with a black spot on its lower anterior edge, just 
above and sometimes below the latero-ventral carina....... 8. 
Metepimeran not:so Marked»... cio wy web Bint teed + Oe 9. 
A black spot on the lower apical angle of abdominal segments 
3-8, which is not connected with the dorsal black............ 
CEES Ee Rae ea eM ae 6 jE stultus, p. 279 
Lower apical angles of abdominal segments 3-8 pale, without 
black spots, or if present broadly connected with the black of 
EHEMIGES MPEG Ae east fue aca bv be congener, p. 275 
Rear of head yellow. Abdomen with a greenish tint............ 
Ho! , Siptremeest ahh le Yarn eh nadia ac unguiculatus, p. 276 
Mameblack “above... 20. 3 lo: A eaten ee Ba sem tetra Le. i. 
Tarsi with more or less pale yellow above. Length 47 mm...... 
Eero raienset cia said eal pare en a Ne Sea rectangularis, p. 278 
SGU CNER A DECIES <n ..nag.cscedecuetdentesya0n ai ge Reckoner alacer, p. 279 
Bastern and Northern species. 3... 45302. «508 hele bee 12. 
Length approximately 41 mm................ forcipatus, p. 277 
Length approximately 35 mm................ disjunctus, p. 278 
Dinka wenn. 5-52 hagids hi bs on-2 ep « 9 CO BE vidua, p. 277 
3. Nymphs* 
Lateral setae 4-5. Mentum of labium broad at its proximal end; 
its narrowest width equal to about one-third its width at the 
Wasestor the Jaterallobess ... «)....2'F% ... 3s eae congener. 
Lateral setae normally three. Mentum of labium narrow at its 
proximal end; its narrowest width equal to about one-fifth to 
one-eighth its width at the bases of the lateral lobes........ 2. 
* Based in part on illustrated key of Howe (’21, p. 107). 
