770 OKTIIOI'TERA OF XORTIIEASTEKX AMERICA. 



Obsolete. Wanting or nearly so; indistinct. 



Obtuse. Blunt. 



Ocellus, ocelli. The simple eyes. 



Occiput. The back part of tlie head. 



Omnivorous. Eating everything eatable. 



Ootheca. A case enclosing eggs. 



Opaque. Without lustre; impenetrable by light rays. 



Ovipositor. The organ for depositing eggs. 



Oviposition. The act of laying eggs. 



Pall i inn. See page 23. 



Palpus, palpi. Articulated and movable organs attached to the maxilla? 



and labium. 



Parasite. An animal or plant which grows and lives upon another. 

 Pellucid. Transparent; translucent, but not necessarily colorless. 

 Pentagonal. Five-sided. 



Perciirrtnt. Running through the entire length. 

 Piceous. Pitchy black; the color of pitch. 

 Pilose. Having long, sparse hairs. 

 Plane. Level, flat; applied to a surface. 



Plasticity. Capable of easy modification by environment, etc. 

 Plumbeous. Pale, blue-gray, like lead. 

 Pre-apical. Before the apex. 



Produced. Drawn out; prolonged; extended from. 

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

 Prosternal spine. A spine projecting from the prosternum. 

 Prothorax. The first thoracic ring or segment bearing the front legs but 



no wings. 



Proximal. Nearest the body; opposite of distal. 

 Prozona. Front dorsal part of the pronotum. 

 Pubescent. Downy; clothed with soft, short, fine hairs. 

 Punctate, punctured. Containing numerous small, point-like depressions 



or punctures. 



Pulvillus, pulvilli. Little pads on under side of tarsal joints. 

 Pyriform,. Pear-shaped. 



Quadrate. Four-sided; square or nearly so. 

 Restricted. Confined to a limited area. 

 Reticulate. With net-like veins or markings. 

 Rudimentary. Not sufficiently developed to be of use. 

 Rugose. Rough, wrinkled; furnished with numerous small elevations. 

 Rufous. Dark reddish-brown. 

 Saltatorial. Fitted for leaping. 

 Saxicolous. Living on rocky ledges or bare rocks. 

 Scabrous. Covered with small, slight elevations; rough like a file. 

 Segment. Ring-like division or joint, as of the antenna?. 

 Sequence. The order in which things follow. 

 Serrate. Saw-toothed. 

 Serrations. Teeth like a saw. 



Serrulate. Finely serrate; having minute serrations. 

 Setaceous.- Bristle -shaped. 



Sinuate. Winding in and out; twice or more curved. 

 Sinus. An excavation as if scooped out. 

 Smooth. Without elevations or wrinkles. 



Spatulate. Paddle or spoon-shaped: flattened and broad at the apex. 

 Speculum,. A special enclosed area on the apical half of tegmen of some 



Gryllidse. 



Spinose. Armed with spines. 



Spinulose. Furnished with spinules or diminutive spines. 

 Spurs. The strong spines at the apex of the tibiae. 

 Sternite. The ventral part of each abdominal segment. 

 Sternum. The ventral part of a body segment. 

 Stridulate.- To make a shrill sound; to grate, scrape or creak with the 



stridulating organs. 

 Styliform. Shaped like a style. 

 Sub. A prefix meaning nearly; almost, somewhat; under, etc. 



