o4 BULLETIN 737, U. S. DEPARTMENT OF AGRICULTURE. 
pair of thin membranous rods, attached near antennal ring; no hypopharyngeat 
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 severai 
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- 
rent fleshy, wart-shaped, with five small lobes encircling the anus. Spiracles 
annuliform-bifore; the developed thoracic spiracles. plainly mesothoracic; 
thé rudimentary thoracic spiracle metathoracic; eighth abdominal spiracles 
present. 
> GENERIC AND SPECIFIC CHARACTERS. 
Head elongate, with parallel sides, frons not reaching the occipital foramen ; 
epicranial suture present; ocelli five, three in anterior, two in a posterior verti- 
eal 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 INSTARS. 
— 
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 PUPA. 
(Pl. To 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 following is a translation: | 
