SüBPHYLUM III 



INSECTA 



807 



t Order 21. SYPHAROPTEROIDBA Handlirsch. 



Body slender, of small size, with homonomous segments and two pairs of homonomous 

 lüings in ivhüh the medial and cuhital veins are greatly reduced. 



Tliis Order, erected to contain the single geniis Sypharoptera Handl. (Fig. 1562), 



Fig. 1562. 

 Sypharoptera pneuma Handl. Goal Mcasures ; Mazon Creek, Illinois, -i/i (after Handlirsch). 



is probably to be regarded as a bigbly specialised lateral aberrant ofFshoot of the 

 Palaeodictyoptera. It is confined to the Upper Carbon iferous. 



t Order 22. HAPALOPTEROIDBA Handlirsch. 



Like the last, this order is probably a specialised derivative from the Palaeo- 

 dictyoptera, and appears to be related to primitive types of the next succeeding order. 



' cu' 



Fi(i. 15(53. 

 Hapaloptera gracUis Handl. Goal Jleasures ; Tremont, Penna. •'»/i (after Handlirsch). 



In the Carboniferoiis geniis Hapaloptera Handl. (Fig. 1563), the wings have the 

 media and cul)itus reduced, and the sector radii well developed. 



