ORTHOPTERA OF NEW ENGLAND. 475 



DEFINITION OF TERMS. 



AntennoR. Two jointed, thread-like appendages on the front of the head. 



Carina (plural Carince) . A keel or ridge. 



Cerci. The small appendages issuing from the sides of the last abdom- 

 inal segment. 



Cinereous. An ash-gray color. 



Clavate. Having a thickened, club-like extremity. 



Costa. It is usually applied to the median carina of the face ; but is 

 also. api)lied to the front margin of the wings and elytra. 



Dentate. Furnished with a tooth. 



Disk. The middle surface. 



Dorsum. The upper surface or back of the thorax, abdomen, etc. 



Dorsal. Pertaining to the upper surface. 



Elongate. Signifies that the part is longer than it is wide. 



Elytra. The wing covers. The anterior or upper wings. 



Fer)iora. The thighs. 



Filiform. Slender, or thread-like. 



Fovcola. A cavity or cellular depression. 



Fulvous. Tawny, or light yellowish brown. 



Fuscous. Dark brown, or sooty color. 



Ganglion (plural Ganglia) . A nervous mass or enlargement. 



Glabrous. Smooth or polished. 



Hyaline. Transparent, with a gi'eenish tinge. 



Lateral lobes of the pronotum. The deflexed portions that cover the 

 sides of the thorax. 



Medial or Median. Occupying the middle. 



Mesonotum. The upper or dorsal sm'face of the mesothorax. 



Mesostcr7ium. The imder sm-face of the mesothorax. 



Mesothorax. The middle part of the thorax, to Avhich the wing covers 

 and middle pair of legs are attached. 



Metanottim. The upper or dorsal surface of the metathorax. 



Mctasternum. The imder surface of the metathorax. 



Metathorax. The posterior part of the thorax, to which the wings and 

 hind pair of legs are attached. 



Nerves. The larger ribs or veins of the wings and wing covers, extend- 

 ing from the base toward the apex. 



Nervules. Tlie smaller connecting veins of the wings and wing covers. 



Ocelli (singular Ocellus). The three simple or little eyes. 



Pectus. The breast or under surface of the thorax. 



Pronotum. The shield which covers the front part of the thorax. 



