408 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
two black marks on proximal joints of antennae form an inverted 
exclamation-point, being nearly in line and the longer one straight 
and somewhat club-shaped. The spines on the hind tibiae are 
smaller than in any other of our New England species. 
Total 
Male 20 
Female 21 
Measurements. 
Tegmina 
Wide Long 
4.5 13 
3 13 
Hind femora Antenna 
10 
28 
27 mm. 
This Cricket is common on Long Island and Staten Island, 
New York, and in New Jersey, where it was first discovered by 
Mr. Wm. T. Davis, a close student of the songs of our musical 
insects, — cicadas and saltatorial Orthoptera, — whose attention 
was arrested by the character of its song. 
Walden records taking this Cricket on the trunks of trees near 
New Haven, Ct., from August 20 to October. It is common 
on post oak on Long Island. In captivity the females deposited 
most of their eggs in the thick bark of red-oak branches half an 
inch or more in diameter at the base of side shoots. The pro- 
tuberances of the egg-cap are mere low, rounded elevations look- 
ing like scales. 
The song is described as resembling that of Oe. angustipennis, 
being intermittent, non-rhythmical, and low in pitch, the length 
of note and rest being about two seconds but varying much. 
The sound begins weakly, increases in volume and slightly in 
pitch, ^continues uniformly and ends abruptly. "In quality 
Fig. 70. — Davis' Tree-cricket, Oecanthus exdamationis. A, egg in oak (x 3) ; B, egg-cap (x 50) ; 
C, projection of egg-cap (x 500); D, egg (x 15). (After Fulton.) 
