1376 INDIANA COLEOPTERA. 



Obscure. — Not readily seen ; not well defined. 

 Obsolete.— 'Seai-ly or entirely lost; inconspicuous. 



Ohtuse.^Sot pointed ; an augle greater than a right angle ; opposed to acute. 

 Occiput.— ThSit 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, nr both. 

 Opaque. — Without lustre ; not transparent. 

 Orbicular. — Round and flat. 



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

 Ovipositor. — The tubular or valved structure l),v means of which the eggs 

 are placed; usually concealed. 



Falpi. — Plural of palpus. 



I'alpus. — A mouth feeler ; tactile, usually jointed structures home by the 

 maxillfe (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 antennte 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. 



l-'hosphorescent. — Shining or glowing in the dark, like phosphorus. 



Piceous. — Pitchy black. 



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



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



PlJooie.— Plaited ; folded like a fan. 



Phiri. — Used as a prefix, means many. 



Poly. — Many, much. 



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



Posterior. — Hinder or hindmost ; opposed to anterior. 



Pre-apical. — Before the apex. 



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



Prehension. — Structures fitted for grasping or holding. 



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



Produced. — Drawn out; prolonged; extended from. 



/V-o?o«s(Cf;.— 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. 



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

 times left exposed in Coleoptera. 



Prosper?! a /.—Belonging to the presternum. 



Prosternal grooves.— Occur laterally in some beetles to receive the antenna^. 



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

 sternum which more or less conceals the mouth from tielow. 



Prosternal .sp/ne.— The curved spine which extends 1)ackwar(l into a meso- 

 sternal cavity. 



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

 from the pleural pieces. 



Prostcrnnm.— The fore-breast; the sclerite between the fore less. 



