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duced in long hooks, of which the outer is twice the larger and 
each of these hooks is separated by a shallow notch from a row 
of 5-9 minute teeth en the distal margin. There are three lateral 
setae, two on the movable hook, and one just before its base. 
Prothorax conic, tapering forward to its attachment to the 
head. Legs very long and slender, generally faintly annulate 
with darker color. Wing cases narrow, elevated, their tips 
hardly reaching the base of the fourth abdominal segment. 
Abdomen cylindric, with lateral margins becoming sharp 
posteriorly, ending on the fourth or fifth to ninth segments in 
minute but sharp lateral spines; segments 2-9 of about equal 
length, 1 and 10 shorter and about equal each to the other. 
Gills long, with parallel sides and abruptly rounded ends, dis- 
tinctly segmented for part of their length, and generally trans- 
versely banded with brown. 
KEY TO SPECIES 
Imagos* 
a Inferior appendages of the male not longer than 
half the superiors 
b A large metallic green species: length of hind 
TIES veces MAS acc is 1s eee. oy eateda a Bee eee eurina 
bb A smaller, blackish brown species: length of 
Hind“ wines 18-22 MW sg ewe de be pee congener 
aa Inferior appendages of the male abdomen longer 
than half but not longer than the supe- 
riors 
ec Inferior appendages, viewed from above, exhib- 
TIS 8. Ste IOI: CULPVATURG 52... 5 oxo e ee unguiculata 
cc Inferior appendages viewed from above, straight 
or nearly so 
d Metallic green species (when mature) 
e Inferior appendages of the male viewed 
from above strongly dilated toward the 
81 a Re BAER Nad sg ELS St oH uneata 
ee Inferior appendages of the male very slen- 
der and straight in their apical half..... Vigtiax 
dd Blackish brown species 
; f Apex of inferior appendages of male bent 
) downward mt the: tins 635.4) Sehwag ce rectangularis 
ff Apex of inferior appendages not distinctly 
declined 
} g Inferior appendages of the male viewed 
from above slightly widened at the tip; 
of the two teeth on the inner edge of 
Superior appendage, the basal one is 
MGCh the WIE sce Bees eos ee forcipata 
a 
1 After Calvert. Am. Ent. Soc. Trans. 1893. 20:229-32. 
