406 GLOSSARY. 



Ochreous, yellow with a slight tinge of brown. 



Orbicular, round. 



Order, the subdivision of a class. 



Osmateria, scent-organs of the larvae of the genus Papilio. 



Oval, broadly elliptical. 



Ovate, egg-shaped. 



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



ground color ; clouded ; overcast. 

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



between which the tongue is coiled like a watch-spring. 

 Piceous, pitchy ; the color of pitch. 

 Pile, very minute, short hairs. 

 Pilous, having long, sparse hairs. 

 Polymorphous, applied to a species existing in several different forms 



as to color, markings, or size. 

 Porrect, straight out. 



Posterior angle, the angle formed by the outer margin and the pos- 

 terior or hind margin of the fore wing. 

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



the costa. 

 Proboscis, the tongue, or sucking organ. 

 Prolegs, the fleshy legs of caterpillars. 

 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. 

 Pruinous, hoary ; covered with a whitish powder. 

 Pubescent, coated with fine hair or down. 

 Punctured, marked with small impressed dots. 

 Pupa, the third stage of an insect, counting 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. 

 Remote, separate ; not near together. 

 Reniform, kidney-shaped. 

 Reticulate, resembling net-work. 



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

 Retuse, ending in an obtuse sinus. 



