292 PROCEEDINGS OF THE ACADEMY OF IMay, 



Size small (smallest in the genus) ; form moderately robust, abdo- 

 men broad fusiform. Head broad trigonal, the depth contained about 

 one and one-third times in the width; occipital margin moderately 

 arcuate, appreciably indented at the sulci, more distinctly arcuate 

 laterad of the same; ocelli small, placed in a depressed triangle; 

 facial shield strongly transverse, the depth contained nearly three 

 times in the width, dorsal margin obtuse-angulate, ventral margin 

 nearly straight, two slight median bosses present; eyes hardly 

 prominent, well rounded; antennae filiform, very short. Pronotum 

 of the general form found in females of species of this genus, the 

 width of the supracoxal expansion contained two and one-half times 

 in the length of the pronotum; cephalic margin very slightly pro- 

 duced, very narrowly rounded at the extremity, margins of the collar 

 expanding caudad to the supracoxal expansion, margins of the shaft 

 moderately constricted, regularly concave, caudal margin arcuate 

 laterad, s-ubtruncate mesad, all of the lateral margins spinose, the 

 spines of the margins of the shaft much longer than those elsewhere, 

 distinct, more or less regular intercalated spines of minor length 

 present on the same margins; transverse sulcus strongly impressed, 

 shaft with a very distinct, but not high median carina. Tegmina 

 very short, not more than half the length of the pronotum, broad 

 ovate, costal margin strongly arcuate, apex subtruncate, sutural 

 margin moderately arcuate; marginal field more than half the width 

 of the remainder of the tegmen, anal field very long and narrow. 

 Supra-anal plate transverse, trigonal, the margins laterad of the apex 

 arcuate, apex obtuse-angulate; cerci simple, terete, not exceeding 

 the supra-anal plate; subgenital plate compressed, rostrate. Ceph- 

 alic coxse slightly more than two-thirds the length of the pronotum, 

 dorsal and ventral margins with numerous distinct recurved denti-. 

 form spines and intercalated spinulations, external margin with 

 denticulate tubercles, internal face of the coxse with numerous 

 tubercles arranged more or less regularly in longitudinal series; 

 cephalic femora more than five-sixths the length of the pronotum, 

 the greatest depth of the femur slightly more than a fourth the 

 length of the same, dorsal margin nearly straight, ventro-external 

 margin arcuate, armed with five short robust spines, internal margin 

 with thirteen spines more or less alternating in length, the proximal 

 spines the longer, discoidal spines three in number; cephalic tibiae 

 (exclusive of apical claw) about half the length of the femur, armed 

 on the external margin with eight spines, a considerable unarmed dias- 

 tema at the base, internal margin armed with thirteen to fourteen 



