114 JOUKNAL OF ENTOMOLOGY AND ZOOLOGY 



of each tergite suffused with brown. In old and fully colored 

 pupae, the bases of the dorsal spines are brown, the tips paler; 

 the head and thorax with appendages brown, sometimes very 

 dark ; abdomen yellowish. 



Alale — Bases of the antennae approximated on either side of 

 the middle line of the venter lying between the cephalic half of 

 the compound eyes ; antennae rather enlarged, directed cephalad, 

 bending around the anterior margin of the eye and thence 

 directed caudad; the antenna ends between the fore tibiae and 

 femora just beyond the joint, the tip about on a level with the 

 lobes of the labium ; in older pujDae the peculiar nodose segments 

 of the imago show 'through the sheath. Eyes rather large; 

 labrum elongate, slender. Cephalic portion of the head very 

 flat and broad without spines ; a small blunt tubercle between the 

 antennal bases. 



Pronotal breathing horns large, conspicuous, directed dorsad 

 and laterad, the apical half bent rather suddenly cephalad. 

 Mesonotinn feebly wrinkled. Metanotum with two long slender 

 sijines arising beyond midlength of the segment, directed caudad 

 and scarcely dorsad, their tips parallel or slightly convergent. 

 The fore femur is long, ending on a level with the caudal portion 

 of the eye; the fore tarsi are shortest, the hind tarsi longest, 

 this relation holding for all the tarsal segments throughout ; the 

 tip of the hind legs is just before the caudal margin of the third 

 abdominal segment. Wings broad, reaching the caudal margin 

 of the second abdominal segment. 



Abdomen, viewed from above, with the first segment about 

 one-half as long as the second; segments II to VII subequal in 

 length. Tergites I to VII bear a long slender spinous projection 

 from either side of the median line, shortest on the anterior 

 segments, longest on the seventh segment. These projections 

 arise from near the caudal margin, those on the anterior seg- 

 ments more parallel, those on the rear segments becoming diver- 

 gent; these projections are directed caudad and dorsad, those 

 behind being almost perpendicular to the body. Segments II 

 to VII have the lateral margins produced into three sharp spines, 

 these spines being near the base, middle and caudal portion of 



