S EXPLANATION OF TERMS 



Annulate: ringed or marked with colored bands. 



Annulet: a small or narrow ring or annulus. 



Annuliform: in the form of rings or segments. 



Annulus: a ring encircling a joint, segment, spot or mark; sometimes applied 

 to the inner ring encircling the mouth opening. 



Annulus antennalis: the ring sclerite of the head into which the basal seg- 

 ment of the antenna is inserted ; = antennal sclerite. 



Anomalous: unusual ; departing widely from the usual type. 



Anoplura: wingless species without metamorphosis, habits epizootic, thoracic 

 segments similarly developed : a composite aggregation which includes both 

 the biting and sucking lice. 



Ante: before; used as a prefix. 



Ante-alar sinus: Odonata; a grooved area extending transversely immedi- 

 ately in front of the base of each front wing. 



Ante-apical: just before the apex. 



Ante-clypeus: Odonata; the lower of the two divisions of the clypeus ; the 

 inferior half of the clypeus whenever there is any apparent line of demarca- 

 tion : = tilypeus-anterior ; infra-clypeus ; rhinarium ; second clypeus. 



Ante-coxal piece: Coleoptera ; that portion of the metasternum lying in front 

 of the posterior coxa?, often passing between them and meeting the abdomen : 

 of mandible, is the lateral sclerite of the clypeus ; — one on each side. 



Ante-cubital: see ante-nodal, cross veins and spaces. 



Ante-furca: an internal forked process from the prosternum, to which muscles 

 are attached. 



Ante-humeral: relating to the space just before origin of wings. 



Ante-humeral stripe: Odonata; a discolored stripe, approximately parallel to, 

 but to the inner side of the humeral suture, q. v. 



Antemedial line: = t. a. line, q. v. 



Antemedian: Diptera; applied to leg-bristles situated before the middle. 



Antenna -ae: two jointed, sensory organs, borne, one on each side of the 

 head, commonly termed horns or feelers. 



Antenna-cleaner: a fringed excavation on the interior base of the ist segment 

 of the anterior tarsi of Hymenoptera which, when covered by the movable 

 process from the end of the tibia, forms an opening through which the 

 antenna may be drawn : similar structures are on the fore tibiae of Carabid 

 beetles : tarsal claws are also used by various insects to clean antennae. 



Antennal appendage: in Mallophaga, a projecting process of the ist or 3d 

 segment in the male. 



Antennal formula: in Coccidce ; made by enumerating the antennal joints in 

 the order of their length, beginning with the longest and bracketing together 

 those of the same length. 



Antennal fossa -ae: grooves or cavities in which antennae are located or con- 

 cealed : = a. grooves ; antennary fossa. 



Antennal fovea: Diptera; a groove or grooves in the middle of the face as 

 though for the lodgment of the antenna ; bounded on the sides by the facial 

 ridges. 



Antennal foveolae: Orthoptcra ; the pits between frontal costa and lateral 

 carina?, in which the antennae are inserted. 



