1920.] NATURAL SCIENCES OF PHILADELPHIA. 241 



slendcM-, sul) compressed, tectate, carinate dorsad, distal extremity 

 broadly \'-emai-ginate, the margin thickened, the ventral surface of 

 the same supplied with a heavy covering of small, imbricate, ad- 

 pressed denticulations, when seen from the side the segment has the 

 lateral margins straight, the angles rectangulate; subgenital opei- 

 culum moderately compressed, rostrate distad, reaching to the 

 distal third of the eighth dorsal abdominal segment, ventral surface 

 with a inedio-longitudinal carina on distal section : cerci simple, 

 slightly incurved, subequal in width, their length equal to about 

 one-third that of the ninth dorsal abdominal segment, apex blunt, 

 that section covered with i-ecurved, chaetiform spinulations. 



Limbs extremely slender, attenuate, multicarinate. Cephalic fem- 

 ora almost twice as long as the metanotum (including the median 

 segment), cephalic flexure pronounced and slightly sigmoid when seen 

 from the dorsum: cephalic tibiae surpassing the femoral length by 

 about twice the length of the head: cephalic metatarsi nearly twice 

 as long as the length of the remaining tarsal joints united. Median 

 femora equal to the length of the metanotum and the first and half 

 of the second abdominal segments, very slightly bowed: median 

 tibiae surpassing the femoral length by about the length of the pro- 

 notum: median metatarsi hardly longer than the remainder of the 

 median tarsal joints united. Caudal femora reaching to about 

 the apex of the fifth dorsal abdominal segment, almost imperceptibly 

 arcuate: caudal tibiae surpassing the femoral length by about the 

 length of the head : caudal metatarsi slightly longer than the remain- 

 ing tarsal joints united. Arolia relatively large in all tarsi. 



General color i-anging from primuline yellow on the thoracic seg- 

 ments to dull wax yellow on the abdomen, passing through buck- 

 thorn brown to cinnamon-brown on the limbs. Eyes iDuckthorn 

 brown; antennae mar's brown proximad, passing into fuscous distad. 

 Head with paired postocular lines of mummy brown; these are dis- 

 continuously indicated on the meso- and metanotum and the prox- 

 imal abdominal segment. A medio-longitudinal line of l)lackish 

 fuscous extends continuously from the inter-antennal region to the 

 sixth abdominal segment, not strongly indicated distad of the second 

 abdominal segment. 



Length of body, 113.5 mm.; length of head, 5; length of pronotum, 

 3.6; length of mesonotum, 26; length of metanotum (including 

 median segment), 21.2; length of median segment, 4.4; length of 

 cephalic femur, 43.5; length of cephalic tibia, 54.2; length of median 

 femur, 32; length of caudal femur, 37. 



