34 



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 

 Hyuiciwptera (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 Cercopidce and which often conceals the producer. 



Cucullate: hooded; somewhat hood-shaped. 



CucuUus: 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: Heteroptera ; 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 Dytiscidcc. 



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



Cursoria: in Urllioptcra. that series in which the legs are formed for running 

 (roaches, etc.). 



Cursorial: formed for running. 



Curvate: curved. 



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



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: i'uarded: a body in an envelope. 



Cuticle: the outer skin or skin layer. 



