BUTTERFLIES OF MONTANA. 107 



Ovate, egg-shaped. 



Overlaid, heavily sprinkled with scales of a different color from the ground 



color; clouded; overca.st. 

 Palpi, in butterflies, the three jointed organs beneath the head between 



which the tongue is coiled lika a watch-spring. 

 Perianth, as applied in Botany are the floral leaves that inclose the young 



sporophylls. 

 Petiole, of a leaf, the stalk-like portion that bears the blade. 

 Piceous, pitchy; the color of pitch. 

 Pika, a tailless hare found in the Rocky Mountains. 

 Pile, very minute, short hairs. 

 Pileated, crested; cap-shaped. 

 Pilous, having long, sparse hairs. 

 Polymorphous, applied to a species existing in several different forms a^ 



to color, markings, or size. 

 Porrect, straight out. 

 Posterior angle, the angle formed by the outer margin and the posterior 



or hind margin of the fore wing. 

 Posterior margin, that portion of the fore wings which is opposite the 



costa. 

 Postmedia vein, a vein lying between the media and cubitus. 

 Premedia vein, a vein lying between the media and radia. 

 Primaries, the fore wings of Lepidoptera. 

 Proboscis, the tongue or sucking organ. 

 Pronotum, the anterior part of the covering of the thorax, the covering of 



the thorax. 

 Prothorax, the first division of the thorax, to which the first pair of legs 



are attached. 

 Protuberant, bulging. 



Pruinous, hoary; covered with a whitish powder. 

 Pubescent, coated with fine hair or down. 

 Punctured, marked with small empressed dots. 



Pupa, the third stage of an insect, country the egg the first; the chrysalis. 

 Pupate, to assume the pupa form. 

 Pupil, of an ocellus, the central point. 

 Quadrangular, having four angles. 

 Quadrate, square, or nearly square. 

 Radius, a vein of the wing; the subcostal. 

 Remote, separate; not near together. 

 Reniform, kidney-shaped. 

 Reticulate, resembling net-work. 



Retractile, capable of being exserted or drawn in at pleasure. 

 Refuse, ending in an obtuse sinus. 

 Ribs, ridges on eggs from the base to the apex. 

 Roseate, of a rose color. 

 Rosevs, rose color. 

 Rufous, reddish. 

 Rugose or Rugous, wrinkled. 

 Russet, reddish or yellowish brown. 



