USED IN ENTOMOLOGY. 



137 



Synonymous: words of different derivation applied to the same conception. 

 Synthlipsis: the basal constriction of the notocephalon in Notonectids. 

 Syntype: ^co-type: q. v. 

 Syringe: in Hemiptera, a chamber into which the salivary ducts open and by 



means of which the secretion is forced forward between the seta or lancets. 

 System: an order of arrangement. 



Systematic: in definite order, or arranged according to a system. 

 Systole: that regular contraction of the heart that sends the blood outward: 



see diastole. 



T 



T. A. line: transverse anterior line; crosses the primaries of certain moths 

 one-third or less from the base : = antemedial line. 



Tactile: used for touching: an organ that has the sense of touch. 



Taenia: a broad longitudinal stripe. 



Taeniate-us: with broad longitudinal markings. 



Taenidium -ia : the band or chitinized fibre forming a part of the spiral thread 

 in the trachea of insects. 



Tail: an elongated terminal segment of the abdomen: the Cauda in plant lice: 

 elongated processes on the secondaries, in some Lepidoptera and Neuroptera. 



Tangential: set in or meeting at a tangent; applied to ornamentation and 

 processes. 



Tarsal: relating to the tarsi, or feet. 



Tarsal lobes: membranous appendages arising from the underside of the tarsal 

 joints in some Coleoptera. 



Tarsus -i: the foot; the jointed appendage attached at the apex of tibia, 

 bearing the claws and pulvilli. 



Taste cups: specialized pits or cups, with or without a peg or hair, connected 

 with ganglionated nerve cells : occur on the mouth structure and evidence the 

 sense of taste. 



Tawny: a brownish yellow, like the color of a tanned hide [pale cadmium 

 yellow + Indian red]. 



Taxonomical: systematic: relating to classification. 



Tectate: covered; concealed: also used as := tectiform. 



Tectiform: roof-like, sloping from a median ridge, like the primaries of 

 Cicada. 



Tegmen: a covering: sometimes used for the anterior wings in Orthoptera 

 and Neuroptera. 



Tegmina: the thickened primaries serving as wing covers in Orthoptera. 



Tegulae: small, more or less cup-like scales at the base of primaries in many 

 insects; specifically in Hymenoptera : in Lepidoptera, = the patagia or 

 shoulder tippets ; but the homology is disputed ; also applied to the lappet- 

 like pieces forming the collar : in Diptera, the aluhe, q. v. : the latter use is 

 unfortunate and should be abandoned; the first definition should limit the 

 use of the term : see aileron. 



Tegument: a covering surface or skin. 



Teleodont: applied to those forms of male Lucanids bearing the largest man- 

 dibles : see mesodont, amphiodont, priodont. 



