86 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



Pronotuin regularly, and in the female considerably, enlarging posteri- 

 orly, with distinct (male) or indistinct (female) lateral carinae on the 

 prozona, which is twice (male) or almost twice (female) as long as the 

 metazona, its sulci approximated and equally distinct, but not so dis- 

 tinct as that separating the pro- and metazona and, unlike it, not cut- 

 ting the median carina, which is yet often subobsolete on the prozona 

 and especially on its posterior half, particularly in the female; exposed 

 portion of mesonotuin about half (male) or hardly more than. a fourth 

 (female) as long as the metanotuin. Interspace between the rneso- 

 sternal lobes three-fourths (male) or fully (female) as wide as the lobes 

 themselves, the metasternal interspace half (male) or three-fourths 

 (female) the width of the mesosternal interspace. Fore and middle 

 femora pretty strongly inflated and arcuate in the male, the hind 

 femora stout and heavy, hardly if at all more than half as long again 

 as head and pronotnm combined, the hind tibiae stout. Abdomen 

 stout, tapering and then apically enlarged and considerably upturned 

 in the male; supraanal plate of male triangular, shorter than its basal 

 breadth, with a pair of broad, gently tumid ridges, which unite into a 

 single median ridge, leaving between them in the basal half a shallow 

 sulcus; furcula wanting; cerci as long as the supraanal plate, sub 

 conical, slightly compressed, tapering a little more rapidly in basal 

 than in apical half, rather blunt at tip, straight throughout; infracercal 

 plate much shorter than the supraanal, scarcely perceptible. 



Body brownish fuscous above much marked with clay yellow, beneath 

 almost wholly clay yellow, more or less infuscated in the female. The 

 head is more or less obscure yellow, the vertex at summit brownish fus- 

 cous, limited at most to a narrow median and two equally narrow sub- 

 median streaks, the latter continued along the marginal ridges of the 

 fastigium down the sides of the frontal costa, but at the apical third of 

 the fastigium more or less interrupted by or suffused with dull red; the 

 antennae are yellow at base, gradually passing into fuscous. On the 

 dorsum of the thorax and the front at least of the abdomen, the fuscous 

 is more or less obscurely punctate or flecked with yellowish, and along 

 the median line of the abdomen there is a distinct yellowish stripe begin- 

 ning on the meso- and metanota as a mere thread; the prevailing tint 

 of the lateral lobes of the pronotum is yellowish, but there is a more or 

 less distinct blackish fuscous oblique bar on the prozoua just above the 

 middle, merging posteriorly in the general obscurity of the metazona; 

 there is a distinct broad blackish fuscous oblique band crossing the 

 meso- and metapleura, and the middle of the sides of the basal abdomi- 

 nal segments are piceous. The fore and middle legs are fusco-luteous; 

 the hind femora yellowish, more or less obscured with fuscous and 

 spotted with fuscous on the inner upper face and the outer face, which 

 is generally almost black along its upper half; hind tibiae and tarsi 

 coral red, brighter in the male than in the female, the external series 

 of spines yellow with black apices. The sides of the supraanal plate of 



