350 PROCEEDINGS OF THE ACADEMY OF [NoV., 



over half as long as first; joints immediately succeeding increasing 

 strongly in length distad. Pronotum as typical of genus, flattened, 

 longer than broad, briefly produced cephalad to form a collar which 

 is delimited by a delicate transverse sulcus, this produced area not 

 as long as in Sparatta, with lateral margins very feebly convex and 

 nearly parallel and caudal margin moderately convex. Tegmina 

 and wings fully developed, thickly supplied with minute hairs. 

 Dorsal surface of abdomen similarly hairy, except ultimate tergite 

 which is smooth dorsad and has a U-shaped impressed line. Pygid- 

 ium as in dentifera, a produced shaft, three times as long as basal 

 width, with dorsal surface convex, the lateral margins weakly con- 

 vex, so that it is narrowest meso-proximad, the disto-lateral angles 

 produced in acute points, the distal portion between these produced 

 caudad in a square median lamella. Forceps hairy, with shaft al- 

 most straight to distal third where it curves evenly and rather 

 weakly inward to the flattened acute apex; internal surface concave 

 in slightly over proximal two-fifths, the ventral margin there supplied 

 with minute and irregular denticulations terminated by a large tooth 

 directed meso-caudad, armed at end of proximal four-fifths with 

 another similar tooth which, however, is dorsal in vertical position 

 and is directed mesad. Penultimate ventral sternite with caudal 

 margin weakly bilobate. Caudal metatarsus as long as third tarsal 

 joint, supplied ventrad with an external row of widely spaced min- 

 ute spines and an internal very close fringe of spinuliform hairs. 

 Allotype: 9 ; same data as type. [Paris Museum.] 

 Agrees closely with male except in the following features. Ulti- 

 mate abdominal tergite longer, its median length equal to its caudal 

 width. Pygidium small, with dorsal surface convex and very 

 strongly declivent, the distal (caudal) portion produced in a lamella 

 shorter than wide, the lateral margins of this lamella straight and 

 divergent in brief proximal portion, thence concave and showing 

 no divergence to the apices, caudal margin straight mesad, convex 

 to the acute apices laterad; these margins resultantly forming a 

 minute proximal denticulation on each side and two large, slightly 

 recurved horns at the disto-lateral extremities. 



Head (except mouthparts), pronotum, tegmina, exposed portions 

 of wings and dorsal surface of abdomen (except ultimate tergite) 

 blackish, shining, showing a very slight brown tinge. Mouthparts 

 dresden brown. Antennae entirely blackish brown. Ultimate 

 tergite of abdomen tawny (ochraceous-tawny in recessive speci- 

 mens), shining, the dorsal surface of the abdomen having, in some 



