MORGAN HEBARD 43 



From M. maximiliani (Saussure) this insect is easily separated 

 by its smaller size, dark caudal margin of the pronotum and im- 

 maculate tegmina. 



Type. — cf ; Porto Bello, Panama. F'ebruary 21, 191 1. (E. A. 

 Schwarz.) [United States National Museum.] 



In addition to the features given in the generic description, we would note the 

 following. Interocular space one-fourth as wide as that between the antennal 

 sockets.^* Eyes projecting rather decidedly laterad. Ocellar spots rather large, 

 distinct. Maxillary palpi with third joint slightly longer than fourth, fifth (distal) 

 joint about three-quarters as long as fourth, enlarged. Supra-anal plate strongly 

 transverse, basal width nearly six times length, triangular in general outline, briefly 

 cleft meso-distad, with apices thus formed broadly rounded. Cerci elongate lanceo- 

 late (with sixteen joints), seventh to fourteenth joints well-defined, each with 

 lateral margins convex. 



Subgenital plate asymmetrical; sinistral marginal portion thickened, weakly 

 concave oblique produced to slightly beyond the median point, where it is convex, 

 curving into a deep cleft which extends more than half the distance to the margin 

 of the preceding segment, thus forming a sinistral lobe, with a few minute scat-' 

 tered teeth ventrad on its broadly rounded apex. On this lobe, along the margin at 

 the median cleft of the plate, is a rounded ridge (the sinistral fused and specialized 

 style) which is heaviest at the base of the cleft, its surface supplied with stiff hairs 

 and minute scattered teeth. Dextral margin of subgenital plate showing a strong 

 concav'ity at the cercus, thence convex to a straight channel which runs across the 

 surface of the plate to the base of the median cleft of the plate, at this point a slight 

 angulate-emargination is formed, from this point the margin is convex and the 

 plate is thickened, thus forming a dextral lobe (the dextral fused and specialized 

 style) not as large and slightly less produced than the sinistral lobe, well supplied 

 with stifT hairs, its sinistral margin forming the margin at the median cleft of the 

 plate. The heavy pair of plates beneath the supra-anal plate are seen to be \er\' 

 large and are all that is visible within the anal orifice in this specimen. 



Head with vertex, cheeks (including ocellar spots), antennae and palpi clear 

 ochraceous-bufT, the palpi very faintly suffused, with ultimate joint suffused 

 proximad with prout's brown; eyes and inter-ocular-ocellar area shining blackish 

 brown, continued as a broad vertical band with margins sharply defined on face to 

 labral suture. Pronotum with two broad meso-lateral longitudinal bands of black- 

 ish brown, which broaden slightly mesad and strongly caudad, there joining and 

 occupying the entire caudal margin; area between these bands clear ochraceous- 

 buff with a strong orange tinge, remaining broad lateral margins of pronotum trans- 

 parent, very faintly tinged with buckthorn brown. Tegmina translucent, rather 

 strongly tinged with buckthorn brown having a tawny tone, except the costal 

 fields which are transparent, very faintly tinged with buckthorn brown. Wings 



^* The type has the vertex somewhat crushed. These features are more readily seen 

 in the paratype. 



MEM. AM. ENT. SOC, 4. 



