MORGAN HEBARD 
415 
Size small, medium for the genus, form decidedly slender. Antennae as 
typical for genus. Head small; eye, when seen from side, with greatest diam- 
eter one-third greater than length of cheek; occiput showing a very feeble 
tendency toward bilobation, its caudal outline very feebly emarginate. Pro- 
notum slightly longer than greatest width, lateral margins straight and very 
feebly divergent to the broadly convex latero-caudal angles, caudal margin 
weakly convex. Tegmina and wings fully developed. Dorsal abdominal 
segments with scent glands of third very weak, of fourth moderately prominent. 
Pygidium twice as long as w ide, moderately declivent and with surface convex 
pro.ximo-laterad, in distal portion nearly horizontal, w'eakly convex, lateral 
margins almost straight, subparallel and supplied with microscopic teeth in 
proximal half, weakly convex convergent and cingulate in distal half to the 
apex, which is minutely emarginate with lateral projecting portions sharply 
rounded; dorsal surface of pygidium supplied w ith a few' scattered microscopic 
nodes. Forceps with shaft slender, curving very w'eakly and evenly, with 
distal portion rounded in section and tapering to the acute apex; proximal 
portion with inner face deplanate, its dorsal margin rounded and showing a 
few microscopic denticulations beyond the pygidial apex, its ventro-intenial 
margin slightly lamellate, particularly proximad, show ing microscopic dentic- 
ulations, produced in a small but distinct and broad tooth just beyond the 
mesal portion of the pygidium, and a smaller tooth one-third the distance from 
base to apex of the shaft. Caudal metatarsus slightly longer than combined 
length of succeeding tarsal joints, ventral surface well supplied with stiff hairs. 
Fig. 1. Microvostox septentrionalis new species. Dorsal view of pygidium 
and forceps of male. Type. (X 18) 
Fig. 2. Microvostox schwarzi (Caudell). Dorsal view of pygidium and 
forceps of male. Motzorongo, Vera Cruz, Mexico. (X 18). 
Allotype . — 9; same data as type. [United States National 
Museum.] 
Size moderately larger, form and ambisexual features with proportions as 
described for male. Tegmina and wings fully developed. Pygidium con- 
cealed between bases of forceps. Forceps l>riefly separated, slightly heavier 
Fig. 1 
Fig. 2, 
TRAN.S. AM. ENT. SOC., XIJII. 
