34 BULLETIN 73*7, U. S. DEPARTMENT OF AGRICULTURE. 



pair of thin membranous rods, attached near antennal ring; no hypopharyngeal 

 bracon. Body orthosomatic, elongate, fleshy. Legs five-jointed, with clawlike 

 tarsal joints, no claws; thoracic prehypopleural and posthypopleural parts 

 present and chitinized. Prothorax with large subsellate tergal shield ; prester- 

 nites rounded, paired ; prebasisternum and basisternum covered by an unpaired, 

 median, longitudinal, lanceolate chitinization ; no sternellum ; poststernellum 

 well developed. Mesothorax and metathorax with large, poorly defined pres- 

 cutum ; on each side of scuto-scutellar region a small, rounded chitinization, 

 larger on mesothorax than on metathorax ; no median epipleural lobe ; large 

 triangular postepipleural arm ; preepipleural arm united with the presternite 

 into a fleshy, subtriangular spiracle-bearing region reaching ventrally the spina 

 of the prothoracic poststernellum ; no definite sternellum ; poststernellum pres- 

 ent on mesothorax, absent on metathorax. Abdomen with ten segments ; pres 

 cutal area faintly indicated ; dorsal parts of scutum and scutellum on several 

 segments developed as feeble ampullatory lobes; postscutellum narrow, band- 

 like ; epipleurum well developed with preepipleural and postepipleural arms 

 and a median epipleural lobe ; ventral side with parasternum anteriorly limited 

 by a straight line, in front of which there is no longitudinal muscle impression ; 

 ninth abdominal segment with a dorsal chitinous plate; tenth abdominal seg- 

 ment fleshy, wart-shaped, with five small lobes encircling the anus. Spiracles 

 annuliform-bifore ; the developed thoracic spiracles plainly mesothoracic ; 

 the rudimentary thoracic spiracle metathoracic ; eighth abdominal spiracles 

 present. 



GENERIC AND SPECIFIC CHARACTERS. 



Head elongate, with parallel sides, f rons not reaching the occipital foramen ; 

 epicranial suture present ; ocelli five, three in anterior, two in a posterior verti- 

 cal line ; gular plate with a large median, unpaired projection ; cutting edge of 

 mandible slightly sinuate ; prothoracic shield as wide as head. Cerci rudi- 

 mentary. 



LARVAL 1NSTARS. 



Last-instar larva 7 mm. long ; body enlarging slightly posteriorly, pink, set 

 with long, weak, pale yellowish-brown hairs ; chitinous parts dark fuscous ; 

 head approximately 0.7 mm. broad and about twice as long ; shield of ninth seg- 

 ment transversely oval. 



The Pup.v. 



(PI. II, fig. 3.) 



Pupa pink to reddish, about 5 mm. long and 1.5 mm. broad ; head beneath pro- 

 thorax, prothorax broadly oval dorsally, eight tubercles on margin of anterior 

 half, the most anterior pair forming a trapezoidal figure with two bristles poste- 

 rior to them. Behind these two bristles and forming an arc with the adjacent 

 marginal bristles are three equidistant transverse rows of bristles and on the 

 posterior margin is a median group of four. Tubercles subconical and set with 

 long, weak, yellowish-brown bristles. Antennal joints apically bearing large 

 angular tubercles. Tip of abdomen bearing dorso-laterally a pair of curved 

 divergent horns and apically a pair of conical fleshy appendages each apparently 

 composed of three segments. 



Notes on Habits and Life History. 



To the description given by Chevrolat a brief note is added, of 

 which the fallowing is a translation: 



