148 
THIRTEENTH REPORT. 
chestnut brown, margined on sides, and sometimes in front, with 
whitish yellow. Tegmina of male smoky brown; of female, dark 
reddish brown ; the outer basal portion margined with yellowish. 
“Measurements : Length of body, male. 21 mm., female, 16 mm. ; of 
antennae, male, 2S mm., of female, 18 mm. ; of pronotum, male and fe- 
male, 5 mm.; of tegmina, male, 22 mm., female, 6-10 mm.” — Blatcliley. 
These roaches were dug out of rotten logs in the latter part of July. 
SALTA TORI A. 
Key to Families. 
I. Antennae shorter than the body. Tarsi three-jointed. Ovipositor 
two pairs of short, curved, hard, diverging plates. 
Acrididae. 
II. Antennae longer than the body. Tarsi three or four-jointed. 
1. Tarsi four-jointed. Tegmina with sides sloping. Oviposi- 
tor a. flat, hard blade. Locustidae. 
2. Tarsi three-jointed. Tegmina flat above, sides abruptly 
bent. Ovipositor long and needle-like, tip sometimes en- 
larged. Gryllidae. 
FAMILY ACRIDIIDAE. 
The Acridiidae are characterised b} T short antennae, the presence of 
three ocelli, three joints in the tarsus, and auditory organs located on 
the basal segment of the abdomen. There is a great variety in the de- 
velopment of wings and tegmina, which in some species extend far be- 
yond the end of the abdomen, in some barely reach the tip, in others are 
no longer than the pronotum, and in still others are entirely wanting. 
Key to Siib-famiMes-of Acridiidae. 
I. Pronotum extendine: to, or nearly to end of abdomen. 
Tettigidae. 
II. Pronotum never covering first segment of abdomen. 
1. A spine on prosternum between front legs. 
Aeridiinae. 
2. No spine on prosternum. 
a. Face very oblique, fastigium horizonal, median earina 
of pronotum low, with never more than one sulcus. 
Tryxalinae. 
b. Face nearly vertical, fastigium sloping downwards. 
Ocdipodinae. 
SUB-FAMILY TETTIGIDAE. 
The Tettigidae or grouse locusts, our smallest Acrididae , vary in 
length from six to fifteen millimeters. They are easily distinguished 
from others in this family by the very long pronotum , which nearly or 
completely covers the abdomen, sometimes extending twice the length 
of the abdomen. It is the only sub-family the individuals of which live 
through the winter. The eggs are laid in the ground or among lichens 
