EXPLANATION OF PLATES. 
PLATE 
Fig. 1. JEschna heros, meso- and metapleurum, and 
two abdominal arthromeres. 
Fig. 2. JEschna heros, pronotum. 
Fig. 3. JEschna heros , mesonotnm. 
Fig. 4. JEschna heros, motanotum. 
Fig*. 5. Calopteryxmaculata,\viQSO- and motanotum. 
Figs. 1, 5, and 6 drawn by C. F. Gissler; figs. 3, 4 
lion. Objec 
XLVIII. 
Fig. 6. Calopte.ryxmaculata, pleurum of entire ^tho- 
rax. 
Fig. 7. Agrion verticale?, propleurum. 
Fig. 8. Agrion verticalef, pleurum ot entire thorax, 
lottoring as in Fig. 6: 1, 2, uromeres. 
and 7, by William W. Griffin, under author's diree- 
s all enlarged. 
PLATE XLIX. 
Fig. 1. uEschna heros, abdomen, dorsal view, show- 
ing the 11 tergitos: c, eercopoda. 
( 1 - 11 ). 
Fig. 2. JEschna heros, abdomen, lateral view. 
Fig. 3. JEschna heros, abdomen, ventral view, the 
11th tergite (11) seen from beneath: 
f. testes; ur, urosternites. 
William W. Griffin del. 
PLATE L. 
Fig. 1. JEschna heros, end of female abdomen, 
showing the ovipositor: ur, uroster- 
nite; or, outer; mr, middle; ir, inner 
rhabdites or elements of the oviposi- 
tor; 11, 11th tergite; c, eercopoda; 1 
and 2, uromeres, showing the external 
genital armature, the tergitos widely 
separated. 
Fig. 2. JSschna heros, male: pen, penis; tg, ter- 
gite; cl, clasper (basirhabdite); ur, 
urosternite of 2d uromero. 
Fig. 3. JEschna heros, the same, with the ter- 
gites closed. 
Fig. 4. Agrion verticale?, abdomen of male, side 
view : pen, penis; c, eercopoda. 
Fig. 5. Agrion verticale? , abdomen of male, ven- 
tral view : fir, urosternite. 
Fig. 6. Agrion verticale?, abdomen of male, end: 
11, 11th tergite. 
William W. Griffin del. All the parts enlarged. 
PLATE 1,1. 
Fig. 1. Myrmeleon diver sum, head from above. 
Fig. 2. Myrmeleon diversum, head from beneath : 
of, occipital foramen. 
Fig. 3. Ascalaphus longicomis ?, head from above; 
and beneath ; epic, epicranium. 
Fig. 4. Ascalaphus, head from beneath. 
Flo. 5. ltaphidia oblita, head from above. 
William W. Griffin del. 
Fit;. 6. Raphidia oblita , head from beneath. 
Fin. 7. Raphidia oblita, head from side; oc, oc- 
ciput. 
Fig. 8. Polystocchotes nebulosus, head from above. 
Fig. 9. Polystocchotes nebulosus, head from be- 
neath. 
Fig. 10. Polystcechotes nebulosus, head from side. 
All the tigures drawn enlarged. 
PI ATE LI I. 
Fig. 1 . Corydalus cornutus, head seen from beneath. 
Fig. 2. Corydalus cornutus, head seen from above: 
a. cly , ante-clypeus ; p. cly, post-cly- 
peus. 
Fig. 3. Corydalus cornutus, head seen sidewise. 
Fig. 4. Mantispa brunnea , head seen sidewise. 
Fig. 5. Mantispa brunnea, head seen from above. 
Fig. 6. Mantispa brunnea, head seen from beneath. 
All enlarged. Gissler del., under author’s direction. 
PLATE LIU. 
Fig. l. Mantispa brunnea, 1st maxilla: c, cardo; | Fio. 0. Ascalaphus longicomis ? , 2d maxilla (la- 
st, stipes ; l, lacinia ; g, gala ; p, palpus. ! bium ) . 
Fig. 2 . Ascalaphus longicomis, 1st maxilla. Fig. 7. Raphidia oblita, 2d maxilla (labium). 
Fig. 3. Myrmeleon diversum, 1st maxilla. Fig. 8. Myrmeleon diversum, 2d maxilla (labium). 
Fig. 4. Corydalus cornutus, 1st maxilla. Fio. 9. Corydalus cornutus, 2d maxilla (labium). 
Fig. 6. Mantispa brunnea, 2d maxilla (labium). I 
All enlarged. William W. Grilliu del., under author's direction. 
(* r >) 
L 
