1007.] NATURAL SCIENCES OF PHILADELPHIA. 79 



dal tibiio and the presence of an apical hook on the inner valves of the 

 ovipositor. 



Size medium; form moderately compressed. Head with the occiput 

 and vertex declivent to the low, broadly trigonal, shallowly sulcate 

 fastigium; eyes trigonal pyriform; distal joint of the palpi arcuate. 

 Pronotum with the cephalic margin slightly emarginate, caudal margin 

 subtruncate; lateral lobes with the ventral margin slightly arcuate. 

 Abdomen smooth; ovipositor very slightly longer than the pronotum, 

 tapering from the base to aJDOut the middle, distad of which it is sub- 

 equal, the apex obliquely truncate, the inner valves each armed with 

 five teeth, of which the two terminal ones are longer than the others 

 and more recurved ; styles of the female about 

 equal to the ovipositor in length. Cephalic 

 femora about a third again as long as the 

 pronotum, moderately robust, the cephalic 

 margin armed with a single pregenicular Fig. 20 . — Ceuthophilvs 

 spine; cephalic tibiae equal to the femora vTeV^^of'^'^ovipo^sitor. 

 in length. Median femora in the male half (X 6.) 

 again as long as the pronotum, in the 



female slightly less, the cephalic margin armed with three or four spines 

 of which the distal is the longer, caudal genicular lobe spined. Caudal 

 femora in the male moderately long, very considerably inflated, the 

 greatest width contained about two and a half times in the length, 

 dorsal face well supplied with sharp tubercles on the tracings of the 

 scalariform pattern and other irregular lines, ventral carinse elevated, 

 distinctly lamellate, the margins serrato-dentate, separated from the 

 genicular region by a narrow area where the lamellate ridges are roundly 

 excised, immediately proximad of this the ridge develops an acute 

 trigonal process, the ventral margin of which is serrato-dentate con- 

 tinuous with the proximal portions of the carinse; ventral sulcus very 

 broad and moderately deep, the trigonal processes of the margins 

 diverging; caudal tibia) of the male in actual length (following curve) 

 longer than the femora, the proximal fourth forming a quarter circle, the 

 distal three-fourths straight, four pairs of spurs present on the dorsal 

 margins of the shaft, in length these hardly equal the tibial depth, the 

 margins also well supplied with fine teeth, ventral margin somewhat 

 crenulate proximad and with a single spine immediately proximad of 

 the tW'O apical ones, apical spurs long, the median internal one about 

 equalling the dorsal length of the metatarsus; caudal tarsi with the third 

 joint not more than half the length of the second. Caudal femora of 

 female moderately inflated, the greatest width contained about three 



