' CYANOPEPLA. 281 



pectinated or serrated beneath. Palpi curved, ascending rather 

 above the middle of the face, smooth, slightly hairy at the base ; 

 middle joint rather more than twice longer than the basal joint ; 

 terminal joint very minute, ovate. Tongue equal to the thorax 

 beneath. 



Body metallic, cylindric, scarcely slender, smooth. Patagia 

 rather small, somewhat erected. Abdomen less than one-half as 

 long as the body beneath. Legs rather slender,' smooth ; fore 

 tibiae with a short, concealed middle spur ; hind tibiae with four 

 rather short spurs. Tarsi minutely spinous. 



1. C. cruenta Clemens. 



Black. Palpi blue. Head and body metallic blue. Fore wings 

 with a large crimson spot at the base, extended to the middle of 

 the disk and to the fold beneath, and another of the same hue, 

 oval and obliquely placed in the median nervules ; inner margin 

 at the base and a streak along the submedian vein metallic blue ; 

 cilia at the tip white. Hind wings dark bluish-black, immaculate. 

 Length of the body 1 lines ; of the wings 20 lines. 



Mexico, near Jalapa. 



Clemens. 



LITHOSIDES. 



Antennae most frequently moderately long, slender, setaceous. 

 Tongue very often longer than the head. Ocelli very often ab- 

 sent. Palpi not longer than the head, cylindrical? third joint 

 shorter than the second, or not longer. Body slender, elongated. 

 Thorax not crested. Wings very often subelliptical, posterior 

 often folded and slightly enfolding the abdomen. Fore wings 

 rounded at the tips. 



The wing structure of the species included in this group is so 

 diverse that I have been unable to draw up a diagnosis which will 

 apply to it. The insects arranged under this group, compose 

 beyond. doubt more than one natural family, but with the limited 

 number of specimens at my command I cannot undertake the divi- 

 sion of it. 



