NO. 1108. PROCEEDINGS OF THE NATIONAL MUSEUM. 283 



OTIOCERUS FLEXUOSUS, new species. 



Soinewhat resembling 0. coiiuehertii, Kirby, but of smaller size, hav- 

 ing rlie head composed of a foliole of a broad oval form destitute of an 

 angle at the upper extremity, and with the milky-white wing-covers 

 marked with a flexuous red line, which starts beyond the base and 

 extends out to the forward margin of the apex, a large red spot is pres- 

 ent on the opposite side of the apex, and a red trace a little way from 

 the base. Head with a red spot along the fore border of the foliole; 

 l)iincipal joint of antenna^ ligulate; clypeus yellowish white. Legs and 

 abdomen yellowish white. Genital attachments of the male long, slen- 

 der, curved, the upper one single, broad ligulate, grooved. Ground 

 color of wing-covers and wings milk white. 



Length to tip of abdomen, 4 mm.; expanse of wing-covers, 16 mm. 



Tijpe.—:so. 3120, LT..S.N.M. 



Only two specimens of this delicate insect are in the collection. 



DIOSTROMBUS, ne^A^ genus. 



Somewhat resembling a Termes in the form of the wing-covers, but 

 with a short, ovoid body. Head roundish above, including the large 

 eyes, i)rominent in front, where it is grooved on the middle line, a little 

 wider above, and carinated on each hiteral ?nargin; below this, includ- 

 ing the clypeus, beak-shaped, flattened on the sides; very long, and 

 continued by a stout rostrum Mhich extends to the posterior coxa^; 

 antenufe, second joint stout, claviform, and completed by a very slender 

 bristle; eyes broadly circular, the vertex emarginated behind. Pro- 

 notum moderatety short, emarginated in the middle so as to appear 

 bilobed; mesonotum large, tumidly convex, the scutellar portion very 

 broadly curved. Legs slender, the posterior tlbiie stoutest, armed with 

 two stout teeth at the tip. Costal area of the wing-cover contracted 

 for a long space beyond the middle, followed near the tip by two diag- 

 onal veins, the postcostal area continuous to near the tip, crossed before 

 the middle by a single vein, and at tip bounded by two small areoles, 

 the basal areole long and widening toward the apex, from which four 

 veins run acutely oblique outward toward the apical one-fourth of the 

 wing-cover, and followed by four others, which complete the series on 

 the apical portion; all but the two short apical veins are connected by 

 single cross-veins.; wings very small, narrow. Abdomen contracted 

 near the base, tumidly obese behind this stricture, the apical abdominal 

 segment deeply and broadly sinuated behind, and on each side of this 

 with a large curved lamella, last ventral segment armed each side with 

 a long, curved appendage. 



