The wings of Chaeteessa are described and the condition of venation commented on. Venation is primitive and blattid-like.
Features of the wings of Metallyticus are described briefly.
Comments are made on venation in other genera of mantids and a remarkable uniformity of venation noted. The way in which venation in these other mantids differ from that of Chaeteessa and Metallyticus is considered and homologies are determined.
The unique primitiveness of Chaeteessa is confirmed.