28 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



rior ocellus, posterior orbits broad below, narrow above, and may be 

 prolonged on the posterior edge of the vertex, prothorax except a 

 broad anterior dorsal spot undulate on its posterior border, which 

 may be extended laterally almost to the tubercles or interrupted, 

 leaving a pair of lateral spots, tegulae in large part, lateral lines on 

 scutum forming with the curved fascia on the scuttellum a continu- 

 ous curved line, fascia on metanotum, curved fascia on dorsum of 

 median segment produced on the posterior surface and narrowly 

 interrupted medially, lateral angles broadly and sides of median 

 segment, mesopleurae except curved line back of tubercles and spot 

 in front of middle coxae, large spot on metapleurae, fascia on first 

 tergite interrupted medially, its anterior border deeply, broadly 

 emarginate medially and extended forward at the extreme sides, 

 posterior border with a broad shallow emargination on either side of 

 the midline, second fascia of similar pattern except that the anterior 

 medial emargination is extended slightly to the right and left at the 

 posterior angles, and the anterior lateral prolongation is divided 

 showing a lateral black spot, third fascia similar to second except 

 that the median emargination is wider and shallower and the anterior 

 lateral prolongation is interrupted, showing a lateral yellow spot, 

 remaining fascia similar in pattern, but much reduced and modified, 

 apex of seventh tergite, first sternite entirely or nearly so, large lateral 

 spots on second, successively smaller lateral spots on sternites 3-5, 

 coxae, trochanters except spot at base, femora except stripe above, 

 tibiae except more or less of lower surface, tarsi except apical seg- 

 ments, yellow. 



The flagellum is light below and beyond the second segment is of a 

 ferruginous cast. Viewed from above it gradually increases in width 

 from the base to the fourth segment, whence it gradually decreases 

 toward the apex, and segments 3-10 appear very slightly carinate 

 posteriorly, due to specialized areas on the posterior surface. The 

 apical segment of the tarsi is black, dilated, and flattened. This is 

 remarkably so of the anterior pair on which the claws are developed 

 in a fashion peculiar to this species. On the middle and posterior 

 tarsi the apical segment is not so greatly dilated and the claws are of 

 the normal form. The middle femora are dentate on the posterior 

 side; the middle tibiae are club-shaped, being dilated apically (fig. 97), 

 and bear on the apex anteriorly a short, blunt, reddish spine. The 

 middle metatarsus is strongly curved on the inner side, on which, 

 near the base, it bears a number of spines, the most basal one being 

 smallest. The second sternite is plain, without trace of carina or 

 tubercle; the eighth ends in three spines. 



Female. — Black: Labrum, mandibles except apices, clypeus, frons 

 except a pair of broad spatulate lines running from the vertex down- 

 ward and inward, broadly united on the middle of the face and enclos- 



