184 [January 



dull ferruginous; face and cheeks densely clothed with short, appressed. 

 yellowish pubescence, on the vertex and occiput it is thin and erect ; 

 antennae piceous, the three basal joints dull rufous. Thorax finely and 

 closely punctured ; a line on the collar extending on each side on the 

 pleura, covering the tubercles, then running down for a short distance 

 and then curving across to near the base of the middle coxae, two short 

 lines on the anterior middle of the mesothorax, and its posterior margin 

 extending on each side over the tegulae, clothed with short yellowish 

 pubescence ; in front of the tegulae there is a patch of short yellowish- 

 fuscous pubescence, continued from the yellow line behind ; scutellum 

 black, its posterior margin obtusely emarginate, and the lateral teeth 

 well developed and subacute, the anterior and posterior margin clothed 

 with short yellowish pubescence, as well as the whole of the postscutel- 

 lum, which has a tuft of long dense yellowish pubescence on each ex- 

 treme side ; metathorax with a large oblique mark of dense yellowish 

 pubescence on each side, deeply emarginate on the outside and behind ; 

 thorax beneath densely clothed with an appressed silvery-ochraceous 

 pubescence, which also more or less covers the coxae and femora be- 

 neath ; tegulae dull ferruginous. Wings uniform fusco- hyaline, tinged 

 with yellowish, the apical margins much darker; uervures fusco-ferru- 

 ginous. Legs piceous. shining; the tibiae and tarsi dull fulvous, clothed 

 with short golden-yellow pubescence. Abdomen oblong-ovate, deep 

 velvety-black ; on each side of the basal segmeut a large bright yellow 

 mark, deeply indented on the middle within, and dilated on the lateral 

 apical margin ; remaining segments with an apical yellow fascia inter- 

 rupted on the middle, the fasciae on the fifth and sixth segments are 

 nearly obsolete; two last segments dull ferruginous; terminal segment 

 pubescent, obtusely pointed and depressed at tip, with two diverging 

 carinas on the disk ; beneath piceous, stained with obscure rufous, 

 shining; apical margins of the three basal segments more or less clothed 

 with very fine silvery-ochraceous pubescence, the remaining segments 

 dull ferruginous, their apical margins densely fringed with deep golden- 

 yellow pubescence. Length 7 lines; expanse of wings 13 lines. 



Collection. — Ent. Soc. Philacl. One specimen. 



[ dedicate this superb species to Dr. Thomas B. Wilson, to whom I 

 am greatly indebted for the invaluable assistance he has rendered me 

 in the study of Entomology. 



