42 AMERICAN ENTOMOLOGY. 



^GERIA Omphale. — Spcci/ic character. Body red ; abdo- 

 men behind and dorsal line black, with blue spots. 



Cosmosoma Omphale Hubner, fig. 1.4.-^ 9 . 



Desc. Body bright red : head black, with large brilliant blue 

 spots : antennae at tip, whitish ; palpi, second and third joints 

 red ; thorax with a black transverse line before, continued over the 

 wings ; on the anterior part are four blue spots : tergum bright 

 red, with a longitudinal line, abbreviated at base, and tip black ; 

 in which color are four brilliant lateral blue spots, and about seven 

 dorsal ones : venter excepting at base, and each side near the base, 

 black, with a large pure white spot on each side, before the mid- 

 dle ; tuft at tip obsolete : wings hyaline, nervures and margins 

 black ; the black of the tip wide : feet bright red : intermediate 

 tibias black before : posterior tibiae with a black line before. 



Obs. This very beautiful species was found by Mr. T. Peale in 

 Florida, and was presented to me, for the present plate, by the 

 Prince of Musignano, with whom I agree in the specific name 

 here adopted from Hubner. 



The striking contrast of the red and black colors, and the 

 beautiful brilliant vivid azure blue, reflected from the spots of 

 the abdomen, anterior parts of the thorax and the head, render 

 this a highly interesting insect. 



Lower figure. 



COENOMYIA. Plate XX. 



Generic character. Antennae porrect, triarticulate, first joint 

 rather long, cylindrical ; second, cyathiform ; third, conical, eight 

 ringed ; seta none ; palpi elevated ; proboscis short ; scutel bi- 

 dentate ; wings horizontal, crossed upon the tergum. 



Ohs. We are indebted to Latreille for this genus, which has 

 been adopted by Meigen, who, in his European Diptera, describes 

 but a single species as belonging to it. Fabricius gave the name 

 of Sicus to this genus, a designation that Latreille had already 

 applied to a very difi'erent group. The present name will there- 

 fore be considered as having the priority. 



CoENOMYlA PALLIDA. — Specific character. "Wings and abdo- 

 men yellowish-testaceous ; thorax ferruginous. 



Coenomyia pallida nobis, in Long's Second Expedition. 



Desc. Head yellowish-testaceous ; orbits beneath and behind, 



