Q2 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. 



very white, much broadened at the sides; meson otum bright brown- 

 scaled, with brilliant bronzy luster and with traces of pale shining 

 scales along the margins and around the antescutellar bare space; 

 mesially there are two subdorsal spots of pale scales; scutellum pale- 

 scaled; abdomen depressed, dull black-scaled, the segments with 

 rather narrow basal white bands; venter pale-scaled, with obscure 

 apical dark bands; wings with the scales along the veins dark, long 

 and very narrow ; legs black-; femora with the under surface white- 

 scaled; knees narrowly white-scaled; apices of the tibise white-scaled, 

 the inner side of the tibia? and tarsi with a line of pale scales; tarsi 

 of all the legs white-ringed at both ends of the joints, the rings very 

 broad on the hind legs, the last tarsal joint of the hind legs white 

 with a small black ring; claws simple. Length, 3.5 mm. 



Male. — Proboscis rather long, not swollen at apex, white-ringed 

 at the middle; palpi slender, considerably longer than the proboscis, 

 black-scaled, with white annulations, the apical two-thirds clothed 

 with long hairs ; head and thoracic markings as in the female ; ab- 

 domen long and slender, dull black-scaled above, the segments with 

 very broad basal white bands, expanded laterally on the sixth, 

 seventh, and eighth segments; venter pale-scaled, with an indication 

 of subapical dark banding; legs marked as in the female. Length, 

 3.5 mm. 



Ten specimens, Orizaba. Mexico, bred from larvae found in a pud- 

 dle of drainage water in the suburbs of the city. (F. Knab.) 



Type.— Cat. No. 11971, U.S.X.M. 



The adult so closely resembles that of C. stigmatosoma Dyar that 

 it is almost impossible to distinguish them : but the larva- are very 

 dissimilar. 



SABETHES TARSOPUS, new species. 



Female. — Proboscis moderately long, slender, swollen at the apex, 

 clothed with black scales, with a metallic blue luster; palpi black- 

 scaled, with blue luster; prothoracic lobes brilliantly blue-scaled: 

 mesonotum similar, becoming paler in color with a greenish silvery 

 tinge on the scutellum; pleura and coxa? silver-scaled; metanotum 

 with a group of bristles near the apex, its surface clothed with Hal 

 silver scales; postscutellum brilliantly light blue-scaled; abdomen 

 with metallic blue scales above and at the sides, beneath silvery white- 

 scaled, the colors separated in a straight line; tip of the abdomen 

 with coarse black bristles; legs mostly metallic blue-scaled, with 

 purple luster ; the front and mid legs ciliate, hind pair simple ; the 

 front legs are ciliate on the apical half of the tibia? and the base of 

 the first tarsal joint, the ciliation following the upper and lower sur- 

 faces; the apical portion of the second and all of the following joints 

 silvery white marked beneath; mid-legs with the ciliation on the 

 apical half of the tibise and the first and second tarsal joints, very 





