Cross-vet )is. — Veins perpendicular, luure or less, to the longitudinal axis of the 

 wings. They are termed tiie humeral, subcostal, marginal, anterior, 

 posterior, and discal ; whilst in one subfamily of Tipulid.e is found 

 a special cross-vein whic-h I hare designated the costal. 



Cuhital vein. — A name applied by the older autliors to the 3rd longitudinal 

 vein. 



Cyclocem. — Schiner's and Brauer's term for the Notacantua and Tanystoma 

 taken together. 



Lermatina. — " Eremocha^ous s];ecies in the sense that there are no strong 

 bristles ou any part of the thorax or scutelUun " ( J'^-rai/). Verrall's 

 name for the Scenopinid.e and Mvdaid.e taken together. 



Dichopiic. — Applied to the head when the eyes in the male are separated by 

 a distinct more or less broad frons ; as opposed to holoptic. 



Discal cell. — The conspicuous cell near the centre of the wing in a large 

 unmber of Diptera (p. 8). 



Discal vein. — Some of the older autliors spoke (jf the 4th longitudinal vein 

 under this term. 



Bistad. — Away from, the body or the base ot any part ; as opposed to 

 proximad. 



Distal. — Nearer the outer extremity than to tlie body or to the base of any 

 organ. 



Divariccdc. — Applied to the habit of some insects of resting with the wings 

 (and often the legs also) stretched out flat on the surface of the 

 object ; as opposed to those which fold the wings over the abdomen 

 when at i-est. Used by many authors in writing on Tii'ulid.e. 



Diverticulum. — The sucking stomach in Diptera. 



Dolichocephalous. — When the head is longer than it is wide. 



Empodiiim.— " A. median appendage on the underside of and between the 

 claws, either in the form of a pad, like the pulvilli, when it is called 

 pulvilliform, or like a bristle or spine ; rarely it is alone present and 

 the pulvilli wanting " ( WilUston). 



Energopoda. — A superfamily. " Chajtophorous species in the sense that there 

 are strong and usually numerous bristles on the scutellum and legs ; 

 or at least on the sides of the mesonotum ; except in the few cases 

 in which dense coarse pubescence is substituted " ( Verrall). Verrall's 

 name for the Apiocerid^ and Asilid.e. Osten Sacken also included 

 DoLiCHOi'iD^, E.MPID.E, aud Loncuopterid.e, and was inclined to admit 

 also PiiOKiD.E into the same group. 



Epiphai-ynx. — A narrow piece lying immediately below the labrum or ujiper 

 lip in those kinds of Diptera with a highly developed mouth. Be- 

 tween these two j^arts, which form a long tube, the insect sucks up 

 moisture from flowers, the blood of animals, or other sustenance. 



Epistoma, cjnstome. — The mouth-opening and its immediate vicinity : often 

 used by the older authors to signify practically all the lower part of 

 the head below the eyes, except the palpi and any specially developed 

 part of the proboscis. 



