34 EXPLANATION OF TERMS 



Mantispa, Acheta, Gryllotalpa, and some female Locusta. See 



hemelytra. 

 Tegula, a small scale, resembling the squamula of the Diptera, 



but more simple and solid, on the base of the superior wings 



of many insects. 

 Tendo, one or more bristles attached near the base of the under 



wing, and passing through the hook (hamus) in many male 



Lepidoptera ; the females often have the tendo, but never the 



hamus. 

 Tentacula, retractile processes on the larvae of some species of 



Lepidoptera. 

 Teres, nearly cylindric. 

 Tergum, the superior portion of the abdomen, separated from 



the venter by lateral sutures, and divided into segments which 



are perforated each side with the spiraculse. 

 Terminal, situated at the extremity. 

 Tessellated, chequered ; figured like a chess-board. 

 Testaceous, tile or brick colour. 

 Tetragonal, having four corners or angles. 

 Thigh, the femur; the third joint of the feet. 

 Thorax, the dorsal portion of the trunk, included by the dorsal 



sutures, and including; tubercula, anterior angle, posterior 



angle, base. Seepectus. 

 Thyrsus, a cluster. 

 Tibia, the leg, or fourth joint of the feet ; it is slender, long, 



enlarging towards the extremity, which is truncated; includ- 

 ing spinulse, scopa, and corbicula. 



Tip, of the elytra, is that part which is opposed to the base. 

 Tomentose, covered with fine hairs so matted together that par- 

 ticular hairs cannot be separated. See lanate, ciliate. 

 Tongue, the ligula or lingua. 



Torose, protu berating; swelling into knobs or protuberances. 

 Torpidity, a state of hybernation in which no exterior signs of 



life are exhibited. See quiescence, revivescence. 

 Tortilis, twisted. 

 Transverse, the longest diameter placed transversely with respect 



to the body. 

 Trapezium, a quadrilateral or four-sided figure, with none of its 



sides parallel. 



Trichotomous, dividing by threes. 

 Tricuspidate, ending in three points. 

 Tridactylous, having three toes or claws. 

 Trigonate, three-cornered. 



