Bullule: a small blister. Bursa: a pouch or sac: a wing pouch in male caddice flies and in connection with a stalked hair pencil. Bursa copulatrix: the copulatory pouch of the female in some orders; a modification of the vagina. C Caducous-us: deciduous; easily detached or shed. Caecal tubes or pouches: sac, or blind tube-like structures surrounding the chylific ventricle at its junction with the crop, and secreting a digestive ferment. Caecum: a blind sac or tube-like structure serving as one of the caecal tubes or pouches: see coecum. Caelate: a surface with plane elevations of varying forms. Caeruleus -eous: light sky-blue [between lavender and cobalt blue] = coeruleus. Caerulescent: with a tinge of sky-blue. Caesius -eous: a pale dull blue-gray [blue-gray]. Caespiticolous: frequenting or living in grassy pastures or lawns. Calathiform: shaped like a deep bowl. Calcar -ium; pl. ia: a movable spur or spine-like process: specifically the spines at the apex of a tibia. Calcarate -us: with a movable spur or spine-like process. Caliciform: shaped like a cup or calyx. Calipers: the anal forceps in Dermaptera. Calli axillary: Odonata; thickenings at the bases of the wings; distinguished as anterior at the base of the costa, and posterior at the base of radius + medius and cubitus: = axillary calli. Callosity: a thick swollen lump, harder than its surroundings: = callous: also a rather flattened elevation not necessarily harder than the surrounding tissue. Callous: see callosity. Callus: a small callosity. Caltrops spines: the branched and otherwise specialized irritating spines in Limacodid larvae. Calva: a skull-cap: = epicranium, q.v. Calx: the distal end of the tibia; the curving basal portion of the first tarsal joint. Calyculate: applied to antennae, whose cup-shaped joints are so arranged as to fit one into the other. Calypter: Diptera; the alula or squama when it covers the haltere. Calyptra: a hood or cap; see alula. Calyptrate: those flies that have aluke or membranous scales above the halteres. Calyx: the cap or crown of the mushroom bodies of the procerebrum: see also egg-calyx. Campanulate: bell-shaped: more or less ventricose at the base and a little recurved at the margin. Campestral: applied to species inhabiting open fields. Campodeiform: applied to larval forms which, in their early stages at Least, resemble Campodea: = leptitorm.