JOUKNAL OF ENTOMOLOGY AND ZOOLOGY 29 



Spine on the scape of the antennae (plate II, E, c; plate III, D) 

 enormous, somewhat curved, directed ventrad. The inner caudal 

 surface of the e.ve also bears a conspicuous tubercle. The 

 tentorium between the caudal ends of the antennal scapes is 

 l)roduced into a small median tubercle (plate II, E, d). The 

 tubercles on the base of the labrum or end of the clypeus (plate 

 II, E, e) are very large, close together, the tips strongly 

 chitinized. 



Pronotal breathing horns long, slender (plate II, E, a), broad 

 at the base, tapering to a rather sharp point, the organ arcuated 

 so that the point is bent strongly ventrad. Mesonotal scutellar 

 lobe prominent, rather strongly projecting. Leg-sheaths with 

 the terminal tarsal segments about on a common level and 

 o]iposite the end of the third abdominal segment. Wing-pad 

 light brown, the venation showing very clearly, the presence 

 of cell M, in connection with the elongate antennae being char- 

 acteristic of this species alone in Eastern America. 



Second abdominal tergite with a conspicuous basal tubercle 

 on either side of the median line. Spicules very strong, almost 

 spinous, about twenty to twenty-two on tergites II to V. Ter- 

 gites VI and \^I destitute of spicules but with four subapical 

 setiferous tubercles. Tergites II to VII with a conspicuous 

 setiferous tubercle on the ventro-cephalic angle of each caudal 

 annulet. Eighth tergite concave on caudal margin (plate II, D) 

 bearing a pair of strong apical tubercles on either side of the 

 median line. Sternites — Segment III with two spicules on each 

 outer angle; segments IV to VI with about sixteen spicules 

 (sometimes as many as twenty) ; segment VII with about ten. 

 Segments IV to VII with a small setiferous tubercle about 

 midlength of the caudal annulet, widely separated. Segment 

 VIII (plate II, C) without soft pleural region, bearing an apical 

 row of strong spines which is broken only on the dorsum and 

 for a small space on the median line of the venter, there being 

 about twenty of these spines on the segment. Ninth sternite 

 (plate II, C, a) rounded, swollen, with a deep median furrow 

 bearing a small lobe on the ventral side at the end of this split. 

 Ninth tergite (plate II, D, a) produced caudad into two strong 



