47. 



the ligula or front edge of labium is greatly developed. The inaxillte of Lepi- 

 doptera are prolonged into a tubular tongue: the mandibles are obsolete. The 

 rostrum of Diptera is made up of the mandibles and maxillfe in the form of 

 setiie ensheathed by the labium, and is accompanied by the maxillary palpi. 

 In the last respect they differ from Homoptera and Heteroptera. In the three 

 remaining sub-orders the mouth-parts are well developed. 



A 



ABDOMEN, The hindmost section of the body of an inject. 



ACUTE, [Lilt. «cn?i(<(, shari' pointed.! Ending in a sharp iioint, pointed. 



ALIMENTARY CANAL. [Lat. nlere. to feed.] The duct ur eaiial through which thi; f.,.)d 

 passes, including the oesophagus, stomach and intestines. 



A.MBtlLATORIAL, |Lat. a.nhukire, to walk..! Fitted for walking. 



ANATOMY, [Gr. anatemnein, to cut up. J Structure ; or that which treats of structure, or com- 

 position. 



ANTENN.1^, ILat. anfenna, sail-yard.] The "feelers." They are on the head of insects, in 

 front or near the eyes, and usually believed to be organs of sensation. 



ARACHNIDA. [Gr. amchne, spider.J The order of spiders, having a cephalo-thorax and abilo- 

 men. 



ARTICULATES, [liajt. articidaf us. joiated.j A branch of the animal kingdom, having their 

 hard parts e.xternal formed of rings or segments joined together. 



ARTICULATED, [hat. art{rul<itu.s, }omted.\ Jointed; formed with joints or artieulation-i. 



B 



BALANCERS, The "poisers" of the Diptera, situated back of the front, and in place of the 



hin<l wings. 

 BANDED, With transverse encircling lines. 

 BEAK, The sucking mouth of insects. 



BRANCH, A collection of classes; or, a division of the .-Vnimal Kingdom. 

 BRISTLED, Furnished with bristles, or coarse stiff hair. 

 BRACHYCERA, [Gr. 6/-((c7(!i«, short; A.y'/-'(,s, horn.J Diptera with short antennae. 



c 



CATERPILLAR, The larvte of Lepidoptera. 



CENTIPEDES, [Lat. centum, hundred, ami pedes, feet.] A group of insects belonging to the 



order Myriopods, with a single pair of feet to each segment of the body. 

 CEPHALO-THORAX, [Gr. kephale, head, and thorax.] The united head and thorax, as in 



spiders, 

 CtlAR.ACTER, [Gr. chamrter, impress, stamp.] Any distinguishing mark. 

 CILIATED, [Lat. cilium, an eye-lash.] Furnished with cilia or rows of hairs. 

 CLASS, A collection of orders; or, a division of a branch. 

 CLASSIFIC.\TION, [Lat. classis, class, and faceve. to make.] Arrangement into groups or 



classes. 

 CLAVATE, [Lat. clava, club.] Club-shaped ; thicker toward the top. 

 CLY'PEUS, [Lat clypeus, shield.] The shield which covers the mouth, as in beetles. 

 COLEOPTERA, [Gr. koleon, sheath, and pteron, wing.] The fourth suborder of insects. 

 COMPOUND EY'ES, The eyes formed of many facets. 

 COiMPLETE TRANSFORMATION. All the changes or stages in development from the egg, 



including larval and pupal, to the adult form or imago. 

 COMPEESSED, [Lat. con, together, and preniei-e, pressum, to press.] Pressed together laterally- 

 CONICAL, [Lat. comts, cone.] Round and tapering to a point. Cone shaped. 

 CONTIGUOUS, [Lat. contigere, to touch on the sides.] In close contact; touching. 

 CORBICULUM, (Lat.) Ttie honey basket of some of the Hymenoptera, formed by stiff bristles 



projecting over the cavity of the tibia. 

 CORIACEOUS, [Lat. comtw, leather.] Tough, leathery. 



