EXPLANATIONS OF TERMS USED IN TEXT. 279 



fiabellate, fan-shaped. 



iiavous, yellow like a lemon or like sulphur. 



foramina, foramen, opening at an apex ; small openings. 



fossa, a deep pit or depression serving for the point of attachment of an 



organ (Figs. 22, 30, 31). 

 fossorial, fit or used for digging or Ijurrovving. 

 foveola, a cavity or small depression (Fig. page 156). 

 front, frons, the upper forward part of the head (Fig. 40). 

 frontal, relating to the front. 

 fuliginous, sooty; dark brown with a little red. 

 fulvous, tawny, or light yellowish-brown. 



furcula, the process of the last abdominal segment of the male. 

 fuscous, dark brown ; a plain mixture of black and red. 

 fusion, union. 



galea, helmet ; a dilated, unarticulated, membraneous piece of the maxilla 



(Fig. 27).' 

 ganlion, ganglia, a nervous mass or enlargement (Fig. 40). 

 gena, cheek (Fig. 22). 



genicular, knee-jointed' bending abruptly in an obtuse angle. 

 genicular arc, a curved dark marking on the posterior knee-joint. 

 genital chamber (Fig. 38.) 



gibbous, protuberant; marked with elevations. 

 glabrous, smooth or polished, not hairy. 

 glaucous, whitish-blue, inclining to gray. 

 globose, like a ball. 

 gressorial, fitted for walking. 

 griseous, light gray (white and black). 

 gula, throat, concave portion below the head. 



H. 



hemispherical, shaped like half a l^all. 



hexagonal, six sided. 



hibernate, to pass the winter in seclusion or sleep. 



host, the individual furnishing food to a parasite. 



humeral, situated on or near a humerus or anterior corner of the thorax 



or wing-cover. 

 hyaline, transparent with a greenish tinge. 



I. 



ilium, small intestine (Fig. 41). 



imago, an adult insect. 



immaculate, not marked. 



incrassate, thickened; swollen at some particular point. 



included, hidden partly or entirely (the opposite oi extruded) . 



infra-ocular, below the compound eyes. 



