MORGAX HEBARD 113 



pronotum.^'' Compared further with villana, we find that species 

 to differ in the black palpi, tegmina distinctly longer than broad, 

 blackish chestnut limbs and cerci which are reddish distad only. 



The differences shown by cothurnata are: the black head, 

 yellow antennae, slightly more abbreviate tegmina, minute lobi- 

 form wings, black limbs with tibiae ferruginous and yellow cerci. 



It is possible that Eurycotis svbalata Saussure and Zehntner 

 may be still another closely allied species of Pehnatosilpha. In 

 that insect the tegmina are considerably shorter than in micra 

 and other features of differences are indicated in the brief and 

 unsatisfactory original description. 



Type. — cf ; La Palmeta, Santander, Colombia. Elevation, 7500 

 feet. July 15 to 20, 1916. (M. A. Carriker, Jr.) [Hebard Col- 

 lection, Type No. 465.] 



Size small for the genus, form robust. Head broad; very broad interocular 

 space very slightly greater than that between antennal sockets; ocelli repre- 

 sented by minute spots. Pronotum smooth and polished, broad, rather de- 

 cidedly convex, particularly laterad; cephaHc and lateral margins very feebly 

 cingulate, lateral margins divergent and weakly convex to the rounded 

 rectangulate latero-caudal angles, caudal margin transverse, very feebly 

 convex. Tegmina overlapping, extending mesad to base of second dorsal 

 abdominal segment, polished with subobsolete punctae; venation obsolete, 

 anal sulcus briefly indicated only near extremity of sutural margin; costal 

 margins feebly cingulate, subparallel, feebly convex to the broadly convex 

 obtuse-angulate costal angle, the distal margin continuing this curvature 

 and moderately oblique to the rounded, weakly obtuse-angulate, more 

 produced sutural angle, sutural margin weakly convex, ^^'ings atrophied, 

 extending mesad to median portion of first dorsal aljdominal segment, fields 

 distinct, anterior field the wdder and rather strongly chitinous toward the 

 costal margin, veins coarse and irregular .''i Disto-lateral angles of fourth 

 to sixth dorsal abdominal segments sharply but briefly acute-angulate pro- 

 duced in increasing ratio caudad. Supra-anal plate rounded trapeziform'*- 

 with distal portion decidedly hairy. Cerci depressed, rigid, with lateral mar- 

 gins entire liut joints distinct, three times as long as greatest width, apex acute. 

 Internal genitalia complex. Subgenital plate of normal type for genus, styles 

 well inset, cylindrical, feebly incurved, about five times as long as basal width. 

 Armament of limbs heavy, as characteristicf or genus. Caudal metatarsus 



'" The measurements for the others are both apparently for the female sex, 

 and, in conseciuence, the size difference for micra is probably not as consider- 

 able as comparison of the measurements given in the original descriptions of 

 these species would indicate. 



'1 Very similar to those of P. nllana as given in the original description of 

 that species. 



^^ Somewhat deformed dextro-distad in this specimen. 



TRANS. AM. ENT. SOC, XLV. 



