. Contributions to Canadian palæontology. Paleontology. Handliisch] „ _ CANADIAlir FOSSIL INSECTS 97 Oethoptera. Acridioidea. Promastox archaicus, gen. et. ap. nov. Tig. 1. Locality: Horsefly mine, British Columbia, (July 20, 1906). ,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 th
. Contributions to Canadian palæontology. Paleontology. Handliisch] „ _ CANADIAlir FOSSIL INSECTS 97 Oethoptera. Acridioidea. Promastox archaicus, gen. et. ap. nov. Tig. 1. Locality: Horsefly mine, British Columbia, (July 20, 1906). ,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.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectpaleontology, bookyea
