Pro 176 



Propodeonis scutum. — The scutum of the propo- 

 deon. (L. ■propodeon, and scutum, a shield.) 



Propodeum. — The first abdominal segment, which 

 in Hymenoptera exclusive of the Phytophaga, 

 forms a part of the thorax. (L. pro, and Gr. 

 fous, from podos, foot.) 



Propolis. — A substance formed and used by bees in 

 the hives ; the product of resinous substances 

 of the buds of trees, etc. (Gr. pro, and polis, 

 a city.) 



Propygidium. — Penultimate dorsal segment of the 

 abdomen, visible in certain Histerida^, etc., to 

 which it is applied. (L. pro, and Gr. pygidimn.) 



Prostheca. — A subcartilaginous process attached to 

 the inner side, near the base, of the mandibula? ; 

 seen in some of the Coleoptera. (Gr. pro, and 

 theca, a case.) 



Prosternum. — The under surface of the prothorax. 

 The central prominent ridge of the antepectus. 

 (L. pro, and sternum.) 



Protellum. — The eleventh segment in insects. 

 (Gr. pro, before, and from telos, the end.) 



Prothroacis cerebroida. — The second cerebroida. 

 (L. pro, and thorax, and from cerebrum, a brain.) 



Prothroacis nervi dorsalis. — The two nerves 

 ascending to the back from the mesothoracis 

 cerebroida. (L. prothorax, and nervus, a nerve, 

 and dorsum, the back.) 



