,„ EXPLANATION OF TERMS 



Crystalline: transparent, like crystal. 



Crystalline cone: a conical structure below the cornea, imbedded in pigment 



cells of the compound eye : also termed C. lens. 

 Ctenidium: a comb-like structure occurring on any part of an insect. 

 Cubital: referring or belonging to the cubitus. 

 Cubital cell: the wing area between the cubitus and anal vein; in the plural, 



all the cells bounded anteriorly by the cubitus or its branches (Comst.) ; 



in Diptera (Schiner), = radial 3 (Comst.), = 3d posterior cell (Loew) ; in 



Hymenoptera (Norton), = radial 3, 4 and 5 (Comst.). 

 Cubital forks: the branching or points of separation of the branches of the 



cubitus. 

 Cubital nerve or vein: see cubitus. 

 Cubitus: of Comstock, is the 5th in the series of longitudinal veins extending 



from base, and usually two branched before reaching outer margin : in 

 . Orthoptera; = the internomedian and ulnar: in Neuroptera, a main longi- 

 tudinal vein next behind the medius and before the anal : the tibia of the 



anterior leg. 

 •Cuckoo spit: liquid in the form of bubbles produced by members of the 



family Ccrcopida and which often conceals the producer. 

 Cucullate: hooded; somewhat hood-shaped. 

 Cucullus: a hood: see capillitium. 

 Cuilleron: see alula. 



Culicifuge: any preparation for driving away gnats or mosquitoes. 

 Culmen: the longitudinal carina of a caterpillar. 

 Cultellus: one of the blade-like lancets in piercing flies: = the mandibles of 



some authors. 

 Cultrate -iform: shaped like a pruning knife. 

 Cumulate: in groups or heaps. 



Cumulus: a group or heap; as of cells in a developing ovum. 

 Cuneate, Cuneiform: wedge-shaped; elongate triangular. 

 Cuneus: Hcteroptera; the small triangular area at the end of the embolium 



of hemelytra : Odonata, the small triangle of the vertex between the com- 

 pound eyes. 

 Cupreous: the metallic red of pure shining copper. 

 Cupules: the sucker-like processes covering the under surface of the tarsi in 



male Dytiscidce. 

 Cupuliform: cup-shaped: like a little cup: = cyathiform. 

 Cursoria: in Urthoptera, that series in which the legs are formed for running 



( teaches, etc.). 

 Cursorial: formed for running. 

 Curvate: curved. 



Curvinervate: wings with the veins distinctly curved, like some Psocidce. 

 Cusp -is: a pointed process; sometimes at the margin of a wing. 

 Cuspidate: prickly pointed; ending in a sharp point; with an acuminated 



point ending in a bristle. 

 Custodite -us: guarded: a body in an envelope. 

 Cuticle: the outer skin or skin layer. 



