14 EXPLANATION OF TERMS 



Atomarius: with minute dots or points. 



Atrachelia: Coleoptcra in which there is no visible constriction between head 



and prothorax; Rhynchophora and some Heteromera. 



Atrium: a chamber just within the spiracle and before the occluding struc- 

 ture to the trachea. 



Atrocoeruleus: very deep, blackish, sky-blue. 

 Atrophied: wasted away; unfit for use. 

 Atropurpureus: dark purplish, nearly black [an admixture of mauve and 



black]. 



Atrous: jet black. 

 Atrovelutinus: velvety black. 



Atrovirens: dark green, approaching blackish [prussian green]. 

 Attenuated : drawn out ; slender ; tapering. 

 Attingent: touching. 



Atus: suffix; denotes possession of a quality or structure. 

 Atypic-ical: off type; not of the usual form. 

 Auchenorhynchus: with the beak issuing from the inferior portion of head, 



as in Homoptera. 



Auditory: relating to the sense of hearing. 

 Auditory organs: Orthoptera; specialized structures covered by a tense 



membrane, on the anterior tibia or base of abdomen; any structure that 



functions as an ear. 



Aurantiacus: orange colored; a mixture of yellow and red [chrome orange]. 

 Aurate: with ears or ear-like expansions: also = auratus. 

 Auratus: golden yellow [pale cadmium yellow]. 

 Aurelia: = chrysalis or pupa; specifically of butterflies. 

 Aurelian: a lepidopterist. 

 Aureolate: with a diffuse colored ring. 

 Aureole: a ring of color which is usually diffuse outwardly. 

 Aureous-eus: gold-colored. 

 Aurichalceous: brassy yellow. 

 Auricle -cula: an appendage resembling a little ear; in Odonata the tumes- 



cent area at the sides of the second abdominal segment: in Andrenidcz, a 



short membranous process placed laterally on the ligula. 

 Auricular: applied to the space or cavity surrounding the dorsal vessel. 

 Auriculate: with an ear-like appendage or, in antennae, with the basal joint 



distended into a concave, plate-like ear which envelops the rest of the 



structures. 

 Auriculo-ventricular: the outer valves of the heart between the auricular 



space and the chamber. 

 Auriculo-ventricular openings: are the lateral openings into the heart by 



means of which the blood is admitted into it. 

 Auritus: with two ear-like spots or appendages. 

 Auroral spot: applied to the bright orange colored spot at the apical area 



of Anthocharis. 



Auroreous-eus: red, like the aurora borealis [crimson lake]. 

 Austral: is that faunal region which covers the whole of the United States 



