342 



AN EXPLANATION OF 



Securlformes, shaped somewhat Hke an axe. 



Sermfic, toothed hke a s^aw, the incisures turned tov/as i^s the extre^ 



mities. 

 Setace/e, growing gradually more attenuated from the base to the point. 

 Seticornes, in the shape of a bristle. 

 Si7nplices, not branched. 

 Spinosce, set with large subulated spines. 

 Spiriformes, rolled into a spiral form. 

 Suhiduta, linear at the base, growing more slender and pointed at 



the apex. 

 Truncuta, the club terminated abruptly by a transverse line. 

 Vcrticillattje, with hairs arranged in whorls at the joints. 

 Ihiclnata, clavated and mucronated, the point reflexed so as nearly 

 to form a right angle. 

 Aptera, insects without wings; many of the Coleoptera are desti- 

 tute of wings, and in most of such species the elytra are close, 

 not separable : the females of several species of the Lepldoptera 

 are also destitute of wings ; as are also some of the Hymenoptera. 

 AREOLAE, Wing-cells. In Hi/menoptera these are essential in the ge- 

 neric character ; as in Tenthredinidd', 4^ . 

 Marginales, those cells situated on the upper part of the wing near 



the apex. (See pi. 10. fig. 10. a. a.) 

 Siibmarginales are beneatb the above. (Fl. 10. Jig. 10. h. h. b.) 

 Artus, the various instruments of motion, viz. the wings, the feet, &c. 



(See p. 33.) 

 ATOMUS, a very minute dot or point. 

 Body. See Corpus. 

 CAPUT. The Head. 



Angulatum, the murgin cornered. 



Attenuatum, lengthened, blunt at the base, growing narrower at the 



apex. 

 Attenuatum posiice, blunt at the apex, narrower at the base. 

 Basis, the part connected to the thorax. 

 Canalicuhitum, with one or more deep hollow lines. 

 Clypeatian, covered above with a leaf-like spreading substance. 

 Conicani, cylindrical, growing smaller at the apex. 

 CA}rnulwn, some part ending in a horn. 



Depressiini, pressed downwards as it were, or thinner than broad. 

 ^marginatum, terminating in a notch. 

 Exsertmn, distinctly separated from the thorax. 

 Gibhum, convex both above and below. 



Injiexum, not on the same plane with the thorax, bending inward. 

 Integrum, undivided, without any furrow. 



Lunatum, roundish, divided at the base by a hollow, the hinder an- 

 gles acute. 



