1920.] NATURAL SCIENCES OF PHILADELPHIA. 221 



Size medium (for the subfamily) ; form but little elongate. Head 

 •svith the greatest depth contained one and one-half times in the 

 greatest width across the eyes; cephalic face of occiput moderately 

 declivent mesad with a distinct but Ioav and rounded boss or swelling, 

 laterad of which are shallow, broad, depressed areas, in which the 

 antennae lay when directed caudad; occipital outhne, when seen 

 from the cephalic aspect, distinctly though not deeply arcuate- 

 emarginate, very faintly bulbous on each side immediately mesad 

 of the juxta-ocular sulci, the juxta-ocular lobes distinct, elevated, 

 slightly acute with the apices rounded; ocelh relatively large, moder- 

 ately prominent, well separated, placed in an inverted, subdepressed 

 triangle, their vicinity without a frontal production; facial shield 

 transverse, its greatest depth contained three times in the greatest 

 width; dorsal margin of shield arcuate mesad and arcuate-emarginate 

 laterad, ventrad of the antennal scrobes; ventral margin of the shield 

 arcuate-emarginate; the curve of the median section of the dorsal 

 margin continued ventro -laterad over the plate by low ridges: clypeus 

 transverse, its surface elevated in a distinct transverse ridge, highest 

 mesad : eyes prominent, inflated, in basal outhne short ovate, close 

 to the internal margin of each eye, and between it and the nearest 

 antenna and ocellus, is placed a pair of well separated tubercles, the 

 dorsal of which is more pronounced than the ventral: antennae 

 with the joints, aside from the proximal three, moniliform, the 

 proximal jointf relatively large. 



Pronotum in general form intermediate between that found in 

 Pseudomiopteryx and Eumiopteryx, the greatest width across the 

 supra-coxal expansion contained about twice in the greatest length 

 of the pronotum, which is nearly twice the least width, this being 

 situated caudad of the middle of the shaft: collar with the lateral 

 margins appreciably depressed amphate, cephahc margin relatively 

 narrowed, rounded, with a slight angle where it passes into the 

 lateral section, thence the margins are straight and obliquely diverg- 

 ing to faintly before the middle of the shaft, where there is a dis- 

 tinct obtuse-angulate projection, the margins thence to the angle 

 of the dilation divergent arcuate-emarginate ; angles of the expansion 

 obtuse, the immediate angles narrowly rounded; margins of the 

 shaft regularly narrowing from the long expansion to the point 

 of least width, thence faintly expanding to the arcuate caudal mar- 

 gin; lateral margins in the vicinity of the expansion minutely crenu- 

 late: collar occupying two-fifths of the length of the pronotum, 

 its surface with a paired median tubercle and caudad of this a pair 



