245 Wri 



" Wing bones." — The nerves or nervures of the 

 wings. (M.E. winge, wenge.) 



Wing-case. — The chitinous case which covers and 

 protects the delicate under-wings of coleo- 

 pterous insects. (M.E. winge, wenge.) 



Wing-cells. — The Arese. 



Winglets. — Rudimentary wings. Small concave- 

 convex scales, generally fringed at the tip, 

 situated under the base of the elytra in Bytiscus 

 niarginalis Linn. (M.E. winge.) 



Wing ribs.— [See Nervures.] 



Wings. — Membranaceous, reticulated instruments 

 of flight, attached laterally to the thorax. (M.E. 

 winge, wenge,) 



Winter eggs. — The pseudova of the Aphids. (A.S. 

 winter, a winter, a year, and M.E. egges. Swed. 

 agg -)- A.S. (eg, the oval body of females from 

 which the young arise.) 



Woody. — A term frequently used in describing 

 parts of insects which bear a general appear- 

 ance to wood, whether in texture, consistency, 

 or appearance. (A.S. wudu.) 



Wrinkled. — ^A term used generally to imply 

 rugosity. (M.E. wrinkle, perhaps allied to 

 Wrench, and to A.S. wringan, to twist.) 



Writhled. — Wrinkled ; the term is not often met 

 with. (M.E. writhen.) 



