4i76 CLAUDE FULLER. 



varying- with illumination, sometimes appearing as with a 

 median keel. Frontal caringe not strongly elevated. 



Eye-spots very distinct in living insects (distinct in pale 

 spirit specimens) ; white or pale yellow with a black centre 

 in the form of a tear-drop ; paleness of colour due to thinness 

 of chitin ; pigmentation apparently upon muscular tissue. 



Ciypeus very short, precipitous, Avith pale, nearly straight 

 margin (epistome), overhanging labrum like a pent-house, with 

 several projecting bristles. 



Labrum deflected, triangular, acute ; covering one-third 

 the length of the mandibles; apex thin and without a lingula, 

 with three superior groups of large bristles, a distal group of 

 six and two sub-marginal rows of four each. 



Mandibles black over greater part, bases red or reddish- 

 yellow ; strong ; about equal ; elevated, but not up-bent ; 

 apices incurved ; each with a strong salient tooth inter- 

 mediate between base and apex, tooth on the left being a 

 little more distal, larger, and more acute than that on the 

 right ; the distal half of the catting margin of each minutely 

 and bluntly serrulate. Left mandible with a sinuate, produced 

 cutting-margin or blade below tooth, and below that a large 

 conical basal protuberance. Right mandible with a minute, 

 very acute, persistent, characteristic, and delicate tooth which 

 resembles a reversed rose-thorn ; this tooth is placed inter- 

 mediate to the large tooth and the base. 



Antennse pale reddish-brown, distal half darker; 2"5 mm. 

 long; XVII-jointed (normal) or pseudo XVI-jointed and 

 (rarely) with sixteen entire articles. When XVII-jointed, 

 I is the longest and XVII nearly as long; III and V are 

 short joints placed between the longer joints II, IV, and VI ; 

 III is slightly shorter and narrower than V ; IV is always 

 shorter than either II or VI, but it is wider than III or V ; 

 VI, and often VII, about equal to II ; VIII-XVI sub-equal. 

 Joint I cylindrical, robust ; II stout, wider than long, narrower 

 than I; III- VI annular, sub-globose; VII-XVI globose, sub- 

 obconic; XVII fusiform or elongate-oval. Joints III-XVII 

 Avith conspicuous apical whorls of bristles; I and II with incon- 



