PLATE 4 



Taeniopteryx pacifica: 



A. — Stonefly, much enlarged, and natural size. 



B. — Mandibles, ventral view. Right mandible at reader's left. 



C. — Ventral view of anal segment of female. 



D. — Labium. 



E.— Maxilla. 



F. — Labrum. Dorsal view at left, ventral viev/ at right. 



