24 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 Or- 

 thoptera 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 larvae 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 

 unjointed 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-cesophageal ganglion. 



Cerebrum: the supra-ossophageal ganglion. 



Cernuous: bent: with the apex bent downward. 



Cervical: relating or belonging to the neck. 



Cervical foramen: in coleopterous larvae 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 Hymcnoptera. 



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 termi- 

 nating a member or appendage. 



