1376 



INDIANA COLEOPTERA. 



Obscure. — Not readily seen; not well defined. 

 Obsolete. — Nearly or entirely lost; inconspicuous. 



Obtuse. — Not pointed ; an angle greater than a right angle ; opposed to acute. 



Occiput. — That part of the head behind the vertex. 



Ocellus. — A simple eye. consisting of a- single convex or bead-like lens. 



Omnivorous. — A general feeder upon animal or vegetable food, or both. 



Opaque— Without lustre ; not transparent. 



Orbicular.- — Round and fiat. 



Outer margin.— The outer edge of wing, between apex and hind angle. 

 Ovipositor. — The tubular or valved structure by means of which the eggs 

 are placed ; usually concealed. 



Palpi. — Plural of palpus. 



Palpus.— A mouth feeler; tactile, usually jointed structures borne by the 



maxilla? (maxillary palpi) and labium (labial palpi). 

 Pectinate. — Comb-shaped ; with even branches like the teeth of a comb. 

 Penultimate.— : Next to the last. 



Perfoliate. — Divided into leaf-like plates ; applied to antennae with disk-like 

 expansions connected by a stalk passing nearly through their centers. 

 Perpendicular. — Upright ; at right angles to horizontal. 

 Persistent. — Remaining constantly ; always present. 

 Phosphorescent. — Shining or glowing in the dark, like phosphorus. 

 Piceous. — Pitchy black. 



Pilose. — Clothed with down, or dense pile ; with long, sparse hair. 

 Plane. — Level, flat ; applied to a surface. 

 Plicate. — Plaited ; folded like a fan. 

 Pluri. — Used as a prefix, means many. 

 Poly.— Many, much. 



Pore. — Any small, round opening on the surface. 

 Posterior. — Hinder or hindmost ; opposed to anterior. 

 P re-apical. — Before the apex. 



Predaceous. — Applied to insects that live by preying upon other organisms. 



Prehension. — Structures fitted for grasping or holding. 



Process. — A prolongation of the surface, margin or an appendage. 



Produced— Drawn out ; prolonged ; extended from. 



Prolonged— Extended or lengthened beyond ordinary limits. 



Prominent— Raised or produced beyond the level or margin; standing out 



in relief by color or otherwise ; conspicuous. 

 Pronotum, — The upper or dorsal surface of thorax. 



Propygidium. — The dorsal segment or tergite in front of the pygidium. some- 

 times left exposed in Coleoptera. 

 Prosternal. — Belonging to the prosternum. 



Prosternal grooves. — Occur laterally in some beetles to receive the antennae, 

 Prosternal lobe.— In some Coleoptera an anterior prolongation of the pro- 

 sternum which more or less conceals the mouth from below. 

 Prosternal spine. — The curved spine which extends backward into a meso- 

 sternal cavity. 



Prosternal suture.— That suture of prothorax which separates the sternum 



from the pleural pieces. 

 Prosternum. — The fore-breast; the sclerite between the fore legs. 



