21G PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
113. JVemobius ortoni, Proc., 12, 330 ; Ent. Notes, 2, 15. 1869. 
Peru. 
This is not a Nemobius, but a rather small Gryllus, and an aber¬ 
rant form, since the fore tibiae bear a tympanum on the inner side 
only; the mediastinal vein of the tegmina has 5-6 branches. 
114. Platydactylus bicolor , Proc., 12, 141 ; 17, 259; Ent. Notes, 
2, 4; 4, 13 ; Cent. Orth., 5. 1868. Bogota, Peru. 
An Eneoptera, differing from E. surinamensis (De Geer) by the 
nearly straight posterior margin of the pronotum and the much 
greater length of the wings, which at rest are half as long again as 
the tegmina. 
115. Platydactylus fasciatus , Proc., 12, 331 ; Ent. Notes, 2, 16. 
1869. Peru. 
Also an Eneoptera, distinct from the preceding by its similar 
coloring on sides and dorsum, and from E. surinamensis (De Geer) 
by the oblique fasciation of the tegmina. 
116. Scapteriscus abbreviatus. Rev. foss. crickets, 14. 1869. Brazil. 
A Scapteriscus. 
117. Scap>teriscus ayassizii, Rev. foss. crickets, 13. 1869. 
Switzerland? 
A Scapteriscus ; no further light has yet been thrown upon its 
true country. It is in all probability South American. 
118. /Scapteriscus tenuis , Rev. foss. crickets, 8. 1869. Brazil. 
A Scapteriscus. 
119. Scapteriscus vicinus , Rev. foss. crickets, 12. 1869. South 
and Central America. 
There is nothing to be added concerning the above species of 
Scapteriscus. 
120. Tridactylus major , Proc., 12, 139 ; Ent. Notes, 2, 2; Cent. 
Orth., 3. 1868. Bengal. 
A true Tridactylus. 
121. Trigonidium gracile , Proc., 12, 331 ; Ent. Notes, 2, 10. 
1869. Peru. 
As claimed by Bolivar (Not. ent., 30) this species is a Cyrtoxiphus 
Brunn., and closely allied to, if not identical with, C. peruvianas 
Sauss. 
122. Trigonidium pacificum, Proc., 12, 139; Ent. Notes, 2, 2; 
Cent. Orth., 3. 1868. Hawaii. 
Belongs, according to Brunner (Proc. Zool. Soc. Bond., 1895, 
895), to his genus Paratrigonidium, established in 1893 for species 
from Burmah and Java. 
