1909.] 



NATURAL SCIENCES OF PHILADELPHIA. 



477 



slightly arcuate emarginate (cT) or subtruncate (9), caudal margin 

 strongly arcuate; lateral carinse hardly marked cephalad, quite 

 strong mesad and caudad, arcuate divergent then rounding to the 

 caudal margin, the arcuation being more pronounced in the male than 

 in the female, the greatest width of the metazona over twice the 

 cephalic width of the same portion; median carina precurrent, weak; 

 caudal portion of the metazona shallowly rugoso-punctate; prozona 

 but little more than a fourth the length of the metazona, transverse 

 sulcus shallow but distinct, not severing the median carina; lateral 

 lobes with the greatest dorsal length half again as much as the depth, 

 the caudal margin hardly (cT) or slightly (9) sinuate. Tegmina of 

 the male hardly projecting caudad of the pronotum, inflated. Abdo- 

 men considerably inflated proximad, tapering caudad, the segments 

 moderately keeled dorsad; terminal dorsal abdominal segment of 

 the male broad at the base, produced, somewhat depressed distad, 

 the lateral margins subparallel caudad of the cereal em argi nations, 

 the distal margin sinuato-truncate; cerci robust and subequal prox- 

 imad and mesad, tapering distad, the robust portion subscabrous, 

 the entire length about half that of the terminal dorsal abdominal 

 segment; infracercal plates projecting caudad of the terminal dorsal 

 abdominal segment by nearly half the length of the latter, the lateral 

 margins rounding to the apex which is at the internal margin; sub- 

 genital plate large, compressed, deep, projecting beyond the infracercal 

 plates less than the length of the latter, the apical section carinate 

 ventrad and with the apical margin arcuate on each side of the V- 



Fie. 16. 



Fis. 17. 



Fig. 18. 



Fie. 19. 



Fig. 16. — Aglaothorax sierranus n. sp. Dorsal view of pronotum of male type. 



(X 2.) 

 Fig. 17. — Aglaothorax sierranus n. sp. Dorsal view of pronotum of female type. 



' (X2). 

 Fig. 18. — Aglaothorax sierranus a. sp. Ovipositor. (X 2.) 

 Fig. 19. — Aglaothorax sierranus n. sp. Dorsal view of apex of male abdomen. 



(X 3.) 



shape which the plate there assumes; cerci of the female similar to 

 those of the male; supra-anal plate strongly arcuate; ovipositor 

 about two-thirds the length of the caudal femora, considerably arcuate, 

 tapering, the apical portion of each margin armed with moderately 



