SCUDDER. NORTH AMERICAN CEUTHOPHILI. 89 



less distinctly connected by a luteous thread ; on the middle of each 

 side of each segment a transverse dash, on the abdominal segments 

 more elongated than on the thoracic, and generally partly merged in 

 the mediodorsal spot, on the pronotum larger than elsewhere and ac- 

 companied by some outlying dots ; also as an inferior margining of the 

 thoracic segments ; but all these markings may become so enlarged as to 

 make the surface prevailingly luteous ; the femora are fuscous, becom- 

 ing lutescent toward the base, on the hind pair as heavy scalariform 

 markings, on the anterior pairs as slender stripes. The antennae are 

 brownish luteous, rather slender and apparently about three times 

 the length of the body, the legs rather short and slender. Fore 

 femora no stouter than the middle femora, less than a fourth longer 

 than the pronotum, much less than half as long as the hind femora, 

 the inner carina with a long subapical spine, sometimes accompanied 

 by another minute spine. Middle femora with a very long subapical 

 spine accompanied by a smaller one on the front carina, and the hind 

 carina with a long genicular spine only. Hind femora much shorter 

 than the body, but about two and a quarter times longer than the fore 

 femora, rather slender, being nearly three and a quarter times longer 

 than broad, the apical fourth subequal, the surface with a few raised 

 points scattered here and there beyond the middle of the upper 

 half of the femora both inside and outside, the outer carina with seven 

 or eight small unequal and inequidistant recumbent denticulations on 

 the apical half (<J) or apparently unarmed (9), the inner carina with 

 some very distant and very slight serrulations, the intervening sulcus 

 slender. Hind tibiae straight in both sexes, distinctly longer than the 

 femora, slender, armed beneath with a single preapical spine besides 

 the apical pair ; spurs subopposite, fully twice as long as the tibial 

 depth, set at an angle of about 35-45 with the tibia, and divaricating 

 about 90-100, their tips considerably incurved ; inner middle calcaria 

 scarcely longer than the outer, more than twice as long as the others, 

 nearly twice as long as the spurs and about as long as the first tarsal 

 joint. Hind tarsi two fifths the length of the tibiae, the first joint fully 

 as long as the rest together, the second more than twice as long as the 

 third and with it nearly or quite as long as the fourth. Cerci rather 

 slender, tapering regularly, about as long as the femoral breadth. 

 Ovipositor more than two thirds as long as the hind femora, straight, 

 beyond the proximal third very slender, the tip upturned abruptly 

 and produced to an aculeate point, the teeth of the inner valves acu- 

 leate, pretty long and arcuate. 



Length of body, $ 10.5 mm., 9 12.5 mm. ; pronotum, $ 3.5 mm., 



