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EXPLANATION OF TERMS 



the dorsal vessel, oesophagus, salivary ducts and ventral nerve cords pass from 



head to prothorax. 

 Cephalization: concentration toward the head. 

 Cephalomere: one of the head segments of an arthropod. 

 Cephalophragm: a v-shaped partition which divides the head of some Orthop- 



tera into an anterior and posterior chamber. 

 Cephalon: the head. 



Cephalosome: the head as one of the three regions. 

 Cephalotheca: the head covering in the pupal stage. 

 Cephalo-thorax: the united head and thorax of arachnida and Crustacea: that 



portion of an obtect pupa covering head and thorax : the anterior segments 



of larva that have no obviously separated head. 

 Cerago: bee-bread. 

 Ceratheca or Ceratotheca: that portion of the pupal shell that envelops the 



antenna. 

 Cerci: two lateral anal appendages; usually short, jointed, antenna-like, de- 

 veloped from the eleventh abdominal segment of the embryo ; sometimes un- 



jointed and specialized into forceps or other processes. 

 Cercopoda: jointed foot-like appendages of the last abdominal segment; also 



applied like cerci. 

 Cercus: see cerci. 



Cerebellum: has been applied to the sub-oesophageal ganglion. 

 Cerebrum: the supra-oesophageal ganglion. 

 Cernuous: bent: with the apex bent downward. 

 Cervical: relating or belonging to the neck. 

 Cervical foramen: in coleopterous larva? — occipital foramen. 

 Cervical sclerites: small chitinous plates on the membrane between head and 



thorax : see jugular sclerites. 

 Cervical shield: the chitinous plate on the prothorax of caterpillars just be- 

 hind the head : = prothoracic shield. 

 Cerviculate: with a long neck or neck-like portion. 

 Cervinus: reddish, deer-gray [pale cadmium yellow and Indian red]. 

 Cervix: the upper part of the neck; = crag : in Diptera; that part of the 



occiput lying over the junction of the head, i. e., between the vertex and neck. 

 Cespitose: matted together. 

 Chaetophorous: applied to bristle-bearing flies. 

 Chaetotaxy: the science dealing with the arrangement and nomenclature of 



the bristles on the body of insects. 

 Chagrined: see shagreened. 



Chalastrogastra: the saw-flies; a group of Hymenoptera. 

 Chalceous: brassy in color or appearance. 

 Chalybeate: steely in appearance. 

 Chalybeous: metallic steel blue. 



Channelled: a surface, with deep grooves or channels. 

 Chaperon: = clypeus or clypeus anterior. 

 Chaplet: a little crown; a circle of hooks or other small processes terminating 



a member or appendage. 



