24 JOITRNAX, OF ENTOMOLOGY AND ZOOLOGY 



side at the base of the crest, just cephalad of the swollen an- 

 tennal base is a small subchitinized tubercle bearing a bristle. 

 Eyes moderately large, occupying the space between the scape 

 of the antennae and the basal segments of the antennal flagel- 

 lum. The anterior arms of the tentorium show through the 

 cuticle, the arms rather short, elongate-triangular, directed 

 toward the caudal end of the eye. Labnim large, roughly tri- 

 angular, transversely wrinkled and bearing a conspicuous 

 tubercle on either side near the base (which probably repre- 

 sents on the ectal surface the propharynx underneath, accord- 

 ing to Dr. MacGillivray). The lobes of the lahiiini project 

 caudad on either side of the labrum, occupying the space just 

 cephalad of the fore coxa and proximad of the tip of the fore 

 femur. The maxiUcr are represented by a quadrate plate on 

 either side, lying just caudad of the eye, laterad of the clypeus 

 and labium and cephalad of the knee-joint. 



Thoracic notum quite convex, the pronotal breathing horns 

 short, directed cephalad, dorsad and laterad, distinctly crenu- 

 lated, not visible from beneath. The mesonotal prcescutum deli- 

 cately wrinkled medially, the V-shaped suture rather indis- 

 tinct in young pupae, clearer in darker, older pupae. Median 

 lobe of the mesonotal scutellum well indicated, projecting 

 dorsad and caudad as a conspicuous point. Wing-pad attached 

 opposite the basal quarter of the fore tibia, directed caudad, 

 the tip of the pad lying opposite the ends of the second tarsal 

 segments of the fore and middle legs and opposite the end of 

 the second abdominal segment. Halteres originating on the 

 side of the metanotum, hidden by the wing-pad, the tip at the 

 extreme base of the second abdominal segment and just before 

 the apex of the hind tibia. Fore legs (plate II, A), viewed from 

 beneath the fore coxae (g) are seen lying just caudad of the 

 lobes of the labium ; the coxa, trochanter and extreme base of 

 the femur lie in one straight piece contiguous on the median 

 line. Just beyond the base of the femur the segment bends 

 cephalad upon itself and lies parallel with the coxae and tro- 

 chanters (h) the tip of the femur lying laterad of the lal)ial 

 lobes and just caudad of the maxillae. At this point the tibiae 



