stripe; lateral margin light; anterior angle with oblique row of dots on 

 darker background; posterior angle with narrow, oblique streaks; posterior 

 margin with a dai-k reddish br-own stripe in middle, light in middle of each 

 half, broadly black latei-ally, connected with posterior-angle margin; surface 

 with 4 small, dark i-eddish brown dots in anterior third lateral to inedian 

 SLitui'e. 



Anterior median tergites of metathorax yellowish brown, in form of 

 long triangles, situated close together in middle, as in C h a e t o p t e r y x, 

 divided by a membranous space, surface with 7—8 thin setae of varying size 

 together with primary anterior-margin seta, and a number of small, setuli- 

 foi-m setae. Posterior median tergites lighter, triangular; medioanal 

 seta larger than othei-s, moderately long, reddish brown, 8—9 other setae, 

 including small setae. Lateral tergites whitish posteriorly with a longi- 

 tudinal row of 5 large, pinkish gray dots, a transverse band of oblique, 

 reddish bi^own streaks and 2 — 3 indistinct dots near median mai'gin; anterior 

 part pale yellow, with 3 large, indistinct dots basally; 13—14 setae, primary 

 anterior-angle seta larger than others (Figure 53 5, B). 



Propleuron with wide, black, pleural suture; epimeron slightly oblong; 

 seta near suture short, dark brown, strong; epistei-num dark brown; 

 trochantin black basally, seta small, thin, both setules distinct. Pleurites 

 of meso- and metathorax with thin, pleural suture, naesepisternum dark 

 brown, metepisternum lighter, 3—4 pale dots on surface, setae black. 



Prosternite in form of a slightly sclerotized, yellowish sclerite, with 

 2—3 small, pinkish dots laterally; horn dai-k chestnut brown, with light apex. 

 Mesosternite represented by a number of large, pinkish dots, 2 large dots on 

 each side. Ventral side of metathorax with 3—4 pale dots on each side 

 (Figure 536). 



Legs brown, punctation of femora and tibiae usually indistinct; fore femur 

 dorsally with a small, secondary seta near primary basodorsal seta, in 



306 addition to apical secondary setae; secondary dorsal setae of mid- and hind 

 femora restricted to distal pai-t. Primary ventral setae of fore femur 

 represented by 2 strong, pointed, pale yellow spines; posterior primary seta 

 short, thin, brown, situated basal to spines. Primary ventral setae of mid- 

 femur in form of 2 strong, moderately long, brown spines, one in middle of 

 femur, other situated more basally. Primary ventral setae of hind femur in 

 form of a similar spine in about middle of segment, and a more distal, 

 thinner, moderately long seta. 



Doi'sal process of abdominal segment 1 large with 6 short, or moderately 

 long, reddish brown setae on brown sclerotized dots, and 11 — 12 snaall, thin 

 setae anteriorly and laterally. 



Lateral line from beginning of segment 3 to end of segment 7. Gills on 

 segments 2 — 7; segment 2 without presegmental pleui-al gills; ventral gills 

 on segment 3 and anteriorly on segment 4 especially long, almost reaching 

 base of opposite gill. 



Tergite of segment 9 (Figure 537) yellowish brown, with 2 rows of large, 

 light brown dots at anterior margin; setae reddish brown; medioanal setae 

 thick, long; anterior-angle setae slightly thinner and much shorter, inter- 



307 mediate seta moderately long, strong; seta between medioanal setae the 

 same; lateral setae short, thin; surface with 7—8 small, thin, secondary 

 setae. 



385 



