1863.] 
271 
primordail form, we are compelled to believe that the Great Author of 
Xature, for some inscrutable purpose, confined himself in ornamenting 
each species of these two extensive genera to mere modifications of one 
single design or pattern. A human artist who should so confine him¬ 
self would be immediately accused of poverty of imagination. 
ILLINOIS PSEUDONEUROPTERA. 
Old Species. 
K. Sp. 1862. 
(B. D. W.) 
H. Sp. 1863. 
(B. D. W.) 
Total. 
Termitina, . 
. . . I 
0 
0 
I 
PSOCINA, 
. . . 5* 
6 
7 
18 
Perlina, 
. . . 9t 
9 
0 
18 
Ephemerina, 
. . . 10 
16 
5 
31 
Agrionina, 
. . . 12 
4 
20 
^Eschnina, 
. . . 8 
6 
3 
17 
Libellulina, 
. . . 21 
2 
I 
24 
— 
— 
— 
— 
Total, 
. . . 66 
43 
20 
129 
ERRATA. 
Page 177, line 12, for “basal” read “tarsal.” 
“ 217, line 6 from bottom, for “metathoracic episternnm” read “anterior 
suture of the metathoracic episternum.” 
“ 2.38, line 21, for “varies” read “differs.” 
“ 246, line 17, for “agree with those” read “agrees with that.” 
“ 252, line 11, for “stated have” read “stated to have.” 
“ 259, line 6, for “same” read “the same.” 
Exclusive of Fs. lichenatus and Ps. ahruptus = corruptus. 
I Including Nemoura albidipennis (p. 188). 
J Exclusive of Hetoerina texana n. sp., from Texas, but including H. sceie- 
rata n. sp. 
