IGij BULLETIN UNIVERSITY OF MONTANA. 



Labrum, the upper tip. 



Lanceolate, lance or spear shaped. 



Larva, the second stage of an insect, counting the egg the first. 



Lateral, situated on the side. 



Laved or washed, covered with scales of a color different from the ground 



color, but not quite obscuring the latter. 

 Lenticular, lens-shaped. 

 Lepidoptera, an odler of insects having four wings covered with minute 



imbricated scales; butterflies and moths. 

 Lethargic, becoming torpid or inactive. 

 Linear, narrow and of nearly uniform width. 

 Lineated, streaked or marked with lines. 

 Livid, dark gray, verging towards violet. 

 Longitudinal, the direction of the longest diameter. 

 Lunate, crescent-shaped; formed like a new moon. 

 Lunule, a crescent-shaped marking. 

 Lurid, of a dirty brown color. 

 Lustrous, shining. 

 Maculate, or maculated, spotted. 

 Mandibles ,the upper jaws. 

 Margin, the edge of wing, or along tne edge. 



Maxillae, the lower jaws, placed between the upper jaws and the lower lip. 

 Median, middle. 



Mesial, middle, as a band or stripes across the middle portion of the wing. 

 Mesothorax, that division of the thorax to which the middle pair of legs 

 ne attached, 

 are attached. 

 Metamorphoses, transformations, 

 are attached. 



Moult, or Molt, shedding or casting off the larva sk'n. 



Nebulous, clouded. 



Nervule, a small nerve or nervure. 



Nervures, divisions of the nerves or veins of a wing. 



Neuration, or Venation, the arrangement of the veirs of the wings. 



Niger, black a little tinged with gray. 



Obconic. inversely conic. 



Obcordate, inversely heart-shaped. 



Oblong, the transverse diameter much shorter than the longitudinal. 



Obviate, inversely egg-shaped. 



Obsolescant, growing obsolete. 



Obsolete, indistinct. 



Occiput, the hinder part of the head. 



Ocelli, eye-like spots on the wings of Lepidoptera; single eyes of insects. 



Ochreous, yellow with a slight tinge of brown. 



Olivaceous, olive-green. 



Opaque, having no luster, dull. 



Orbicular, round. 



Order, the subdivision of a class. 



Oval, broadly elliptical. 



