222 PEOCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



feebly tectate above, passing by a well-rounded angle into the inferiorly 

 vertical lateral lobes, ferruginous brown above, fading out on the meta- 

 zona into ferruginous, luteo-testaceous below ; front margin subtrun- 

 cate, hind margin broadly convex; median carina percurrent, slight, 

 the transverse sulci of the prozona slight and not cutting the median 

 carina; prozona longitudinal, very sparsely and feebly punctate, about 

 a third longer than the finely and densely punctate metazona. Pro- 

 sternal spine short, appressed cylindrical, blunt, strongly retrorse; 

 interspace between mesosternal lobes more than twice as long as broad 

 (male) or subquadrate (female), the metasternal lobes subattiugent 

 (male) or subapproxiinate (female). Teginina broad oval, shorter than 

 the pronotum, very broadly rounded apically, overlapping, wood-brown, 

 with a basal blackish fuscous cloud in the costal area. Femora luteo- 

 ferruginous, the fore pair feebly tumid in the male, the hind pair dull 

 ferruginous on the upper face, feebly and irregularly blotched or freck- 

 led with light fuscous on the outer and inner faces, flavous or vinous 

 beneath, the genicular arc and most of the geniculation black; hind 

 tibiae glaucous-green, the spines black with pallid bases, ten in num- 

 ber in the outer series. Thoracic pleura piceous, with the front face of 

 the mesothoracic episterna and the ridge of the metathoracic epimera 

 luteo-testaceous. Abdomen testaceous, with the sides, especially of 

 basal segments, piceous or blackish fuliginous; extremity in the male 

 clavate, well upturned, the supraanal plate broad triangular, the apex 

 rectangulate but compressed so that the sides are sinuate, the lateral 

 halves very broadly and very shallowly sulcate, the median sulciis 

 broad at base, narrowing as far as the middle and thereafter narrow 

 and percurrent, its lateral walls sharp and high only in the basal por- 

 tion; furcula consisting of a pair of lobate distant expansions of the 

 middle of the last dorsal segment, resting upon the outer side of the 

 base of the marginal ridges of the median sulcus of the supraanal 

 plate; cerci moderately broad, straight, slightly tapering, flat on the 

 external face, which is a little more than twice as long as the median 

 breadth, then abruptly recurved inward, leaving a ragged, concave ter- 

 minal edge, the reversed flange a little longer than broad, apically 

 rounded, deeply excavated, pressing against the compressed portion of 

 the supraanal plate; subgenital plate small, considerably longer than 

 broad, not prolonged, of equal width throughout, except for a feeble 

 apical elevation, forming a small blunt tubercle. 



Length of body, male, 16.75 mm., female, 21.5 mm.; antennae, female, 

 7.25 mm.; tegmina, male, 4 mm., female, 4.75 mm.; hind femora, male, 

 10.25 mm., female, 12.5 mm. 



One male, one female. Ciudad del Maiz, San Luis Potosi, Mexico, 

 E. Palmer. 



The character of the cerci with their reversed apex distinguishes this 

 species at a glance from all other Melauopli. 



