44 GENUS AMASIS. 



The vertex is thick, slightly hollow in front of 

 ocelli. Front broad. The antennae widely separated. 

 Clypeus sharply incised in the middle so that the two 

 sides are semicircular. Labrum small. The mandi- 

 bles are small, and have one small subapical tooth. 

 The maxilla and labium are long. The middle lobe of 

 the latter is a little longer than the others ; the lower 

 part is longer than the upper, broader at base than 

 apex, and rounded to a point. The palpi are shorter 

 than the lobes, the basal two joints are subequal, the 

 third is longer, the fourth a little shorter than third. 

 Maxilla long; inner lobe rounded on outer side, the 

 outer lobe long, broad at base, sharp at apex, not 

 reaching to apex of inner. The maxillae arise some- 

 what down from the junction of the inner lobe with 

 the stipes. The basal joint is short, second longer, a 

 very little shorter than the third, and both it and the 

 second are thicker than the following ; the fourth is 

 the longest and is slender, the fifth short and thick, 

 the sixth thin, a little shorter than the fourth. 



The most striking peculiarity of this genus is the 

 manner in which the various divisions of the head 

 and body are closely united so that nearly all trace of 

 the divisional markings are obliterated. Thus the 

 front and clypeus form one piece. The lobes of the me- 

 sonotum have their sutures obliterated, and the sepa- 

 ration of the mesonotum and metanotum is scarcely 

 distinguishable. The segments of the abdomen are 

 also closely united, although the divisions are clearly 

 indicated, and they are not arched as with the species 

 of Alia. Very different too is the structure of the 

 legs, which have the patellae very slightly developed, 

 neither are they membranous. The metatarsus is a 

 little shorter than the following three joints \ the last 

 joint is long. 



The body is closely punctured and has no metallic 

 gloss as in Abia. The <? offers no secondary sexual 

 difference from the ? . 



The larvae are unknown. 



