44 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 52. 



except broad anterior dorsal spot with undulate posterior border and 

 a line in front of tubercles enlarged at inner end, tegulae, narrow line 

 above base of wings on scutum, lateral spots on scutellum narrowed 

 toward the median line, narrow fascia on metanotum, pair of broken 

 oblique lines on dorsum of median segment, lateral angles and spot 

 near spiracle of same, metapleurae, small spot on mesopleurae 

 behhid the tubercles and another large one on anterior border that 

 meets its fellow on the midline of the mesosternum, spot on meso- 

 sternum between middle coxae, broad, widely separated lateral spots 

 and a pair of small median posterior spots on first tergite, narrow 

 fasciae on tergites 2-5 continuous except that on tergite 2 and all 

 biemarginate on anterior middle, sixth with a large median and small 

 lateral spots, apex of ultimate tergite, lateral spots on sternites 2-5, 

 coxae except basall}^, trochanters apically below, femora except 

 stripe above on first pair, tibiae, and tarsi except ultimate segment 

 on first and second pairs, and the last thi'ee segments on posterior 

 pair, yellow. 



The flagellum is testaceous below and slightly carinate posteriorly; 

 the apical segment is reddish, much lighter than the others, slightly 

 flattened apically, neither curved nor truncate, and somewhat longer 

 than the segment immediately preceding. The middle femora are 

 serrate below and the middle metatarsi are distinctly curved on the 

 inner side and basally bear tlu-ee spines, of which the distal two are 

 large and prominent. The apical segment of all tarsi is hlaclc, dilated, 

 flattened, and rounded apically, those on the anterior pair being 

 dilated most, those on the posterior pair least, on which pair the tliird 

 and fourth segments also are dark above and below. The pulvilli 

 are large and distinct. The second sternite beai-s a pair of low, 

 rounded, and somewhat widely separated tubercles and the eighth 

 lacks a discal spme. The seventh tergite bears at the extreme lateral 

 edges an inconspicuous ridge, from below which spring a number of 

 short, stout spines. The pubescence is white, short, and moderately 

 dense on head, thorax, and base of the first segment of the abdomen; 

 the remaining segments are scarcely pubescent at all and show a 

 beautiful bluish-violet iridescence. 



Length. — 15 mm. 



The second specimen lacks the medial spots on the first tergite, 

 but has a pair on the second and third. On the fourth and fifth they 

 are united medially, and on the fourth also with the lateral spots. 

 It also lacks the broken imes on the dorsum of the median segment 

 and has all the femora striped with black above. 



This species stands quite close to speciosa, with which it agrees in 

 respect to the special structures of the legs, the tubercles on the second 

 sternite, and the lateral spmes on the ultimate tergite. It differs 

 from speciosa, however, in that the second cubital cross vein is 



