Handliisch] „ _ 



CANADIAlir FOSSIL INSECTS 97 



Oethoptera. Acridioidea. 



Promastox archaicus, gen. et. ap. nov. Tig. 1. 

 Locality: Horsefly mine, British Columbia, (July 20, 1906). 

 L.M,L.) 



Fig. 1. — Promastax archaicus, Handlirsch. (C=Costa, 5c=Subcosta, 

 JB= Radius, 2Is = Sector radii, M= Media, Cu = Cubitus, 4= Anal.) 



The apical portion of a front wing 18°™ long, the entire length 

 of which may have been about 25"™. The breadth is about one- 

 fourth the length. The apical border is rounded off obliquely. The 

 anal area reaches scarcely more than half the length of the wing. 

 The precostal and costal areas are rather broad: the former extend- 

 ing about half the length of the wing. The subcosta lies near the 

 radius, and ends in the last quarter of the length of the wing. The 

 sector radii — ^which arises somewhat anterior to the middle of the 

 wing— ^draws toward the upper portion of the apical border; sends 

 off about four small twigs toward the anterior margin, and two 

 straight branches obliquely backward to the apical margin. The 

 media is separated from the radius by a rather broad space, and 

 sends off only one long curved branch to the posterior end of the 

 apical margin. The cubitus is likewise far removed from the media ; 

 remains unbranched; makes a short curve toward the end of the 

 anal area, then follows dose to the posterior margin almost to the 

 apical border. Between the cubitus and media no intercalary vein is 

 to be seen. Below the cubitus two simple veins are visible, which 

 reach only to the end of the anal area. From the radius to the first 

 anal vein, all interspaces are bridged over by distinct, rather irregu- 

 larly arranged cross-veins, between which a very delicate irregular 

 network may be made out. 



This wing unquestionably belongs to a rather primitive acridioid 

 form. Similar venation is found in existing reSpresentatives of the 

 sub-family Acridiinse, yet here the cubitus is always branched and 



