420 Annals of the Carnegie Museum. 



exceptions are the smallest of the American Podoscirtidse and are 

 generally slender insects. The genus contains upwards of a dozen 

 described species. No doubt there are a number of others still to be 

 met with in tropical South American countries, when more general 

 and careful collecting shall have been done. Some of the species 

 are plain testaceous throughout, while others are variegated, and at 

 least one is deep steel-blue in color. I shall not attempt to tabulate 

 them now since the present paper is already too extended. 



94. Diatrypa colombiana sp. nov. 



Somewhat hirsute, especially the head and pronotum. A trifle 

 above the average in size. A slender, fusco-testaceous insect, with the 

 occiput, most of the lateral lobes of the pronotum, and the median 

 vein of the tegmina dark fuscous or piceous. Head short, the eyes 

 prominent, separated in front by a distance about equal to their 

 greatest diameter, the rostrum scarcely as wide as one of the large 

 basal antennal joints, gently sulcate. Pronotum narrowed gently 

 forward, broader than long, the lateral lobes moderately high and with 

 the lower margin broadly rounded; the anterior edge straight, the 

 posterior margin broadly sinuose. Tegmina elongate, narrow, the 

 speculum elongate with its anterior end somewhat acuminate, the 

 hind portion rounded and the middle crossed transversely by a single 

 vein. Wings lengthily caudate, the apical portion slightly infuscated. 

 Last ventral segment, or subgenital plate, moderately large, a little 

 longer than broad, expanding apically and broadly bilobed. 



Length of body, cf , 10 mm., of pronotum, 2 mm.; width, 2.5 mm., 

 length of tegmina, 10 mm., of wings, 13 mm., of hind femora, 6.5 mm. 



Habitat. — Don Amo (2,000 ft.) Dept. Magdalena, Colombia (H. H. 

 Smith), a single male, the property of the Carnegie Museum. 



There are two other specimens of the genus at hand, also males. 

 These are of about the same size, but vary in some of the structural 

 characters as well as somewhat in their coloration. The one which 

 approaches most closely to our type comes from the Province del 

 Sara, Bolivia, 350 M. The other was taken at Santa Cruz de la 

 Sierra, Bolivia, 450 M. Both were collected by J. Steinbach. The 

 latter has two transverse veins on the speculum — possibly only an 

 accident. 



