175 Pro 



the laJbrum, without labella at the end, and 

 containing four long capillary lancelets, and a 

 short tongue. It includes the vagina and 

 scapella. (L. fro, and musca, a fly ; apparently 

 the word fly is used for any insect that might 

 look like a fly.) 



Prone. — When an object lies upon its belly. (M.F, 

 frone — L. pronmn, ace. of promts, not erect.) 



Prone surface (Superficies). — The under-surisice. 



Pronotum. — The upper surface of the prothorax. 



Propedes.— The fore or anterior legs. (L.) 



Propedes. (Larvae). — Ventral and anal legs, or 

 prolegs. (L.) See Prolegs. 



Prophragma. — A thin partition which descends 

 from the anterior margin of the mesothorax 

 into the cavity of the trunk and separates the 

 anterior segment from the intermediate one. 

 (Gr. pro, and phragtna, an enclosure.) 



Propleura. — The two lateral surface^ of the pro- 

 thorax. (Gr. pro, and pleura, a side.) 



Propneustic. — A term given to one of the inter- 

 mediate types between the holopneustic and 

 apneustic trachseal systems : — When only the 

 most anterior pair of spiracles are open. (Pupa 

 of Culex, Corethra, etc.) (L. pro, and Gr. 

 pneuma, air.) 



Propodeon. — The fifth segment in insects. (L. 

 pro, and Gr. pous, from podus, foot.) 



