PROVISIONAL GLOSSARY OF TERMS USED IN PART I. 



( The following definitions relate only to the terms as applied in the description 

 of CoccidcB. In general entomology they would have, in mafiy cases, a 

 much wider applicatiofi.) 



Abdomen.— AW the hinder part of the insect posterior to the 'thorax.' The 



third of the three main divisions of the body (head, thorax, and abdomen). 

 Anal lobes; Anal plates. — A pair of small triangular hinged processes forming 



a valve which covers the 'anal orifice' in the Lecaniince. 

 Anal orifice. — The external opening of the intestine. 

 Anal ring. — A circumscribed chitinous ring encircling the 'anal orifice' in 



many Coccidae. 

 Afial tubercles. — A pair of prominent rounded or conical processes situate one 



on each side of the 'anal orifice' in Dactylopiince and larval Hemicoccince. 

 Antennce. — A pair of jointed organs or ' feelers' situated on the head. (In the 



Diaspince they are well developed in the male insect, but rudimentary in 



the female.) 

 Antennal. — Relating to the ' antennae.' 

 Appendages. — A general term for the antenns, mouth-parts, and limbs of an 



insect. 

 Apodema. — A conspicuous transverse band crossing the thorax in front of the 



'scutellum' in male Coccidae. {PL II. fig- 2, g.) 

 Apodous. — Without legs. 

 Apterous. — Without wings. 

 Balancers. — (See ' halteres,') 

 Biarticulate. — With two jomts. 

 Bicuspid. — Having two points or prominences. 

 Carina. — A keel or ridge. 

 Carinated. — Keeled, ridged, or ribbed, 



Castaneous. — Of the colour of a chestnut. Shining reddish brown. 

 Caudad. — Situated towards the tail or caudal extremity, in relation to some 



other part. 

 Caudal. — Pertaining to the tail or posterior extremity. 

 Cephalic. — Pertaining to the head. 



Cephalad. — Towards the head — in relation to some other part. 

 Cephalothorax. — The anterior part of the body, comprising the head and the 



thorax, which in the females of Diaspince have no distinct line of 



separation. 

 Chitin. — A horny substance present in the skin and harder parts of insects. 

 Chitinised. — Hardened by the deposition of ' chitin.' 

 Chitinous. — Consisting of ' chitin.' 

 Circu7ngenital glands. — Small circular glands disposed in distinct groups round 



the 'genital orifice.' (Sometimes termed ' grouped glands.') {PI. I. fig. 



14, a, b. <r.) 

 Compressed. — Flattened from side to side, as opposed to 'depressed' (which see). 

 Contiguous. — Touching. 



