20 riiOCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



line is more normally and evenly bisiniiate, and the median line is 

 diffuse and obscure. Both ordinary spots are present. 



Flavicornis looks much like the precedinj,^ and lias been confused 

 with it. The median lines are much more slender and are connected* 

 in the middle of the wing, while the median shade line is altogether 

 wanting. There are numerous other points of difference, but these will 

 serve here. 



Falata is the prettiest of all the species, with the vestiture smooth, 

 the markings (ilearcut, black, and slender, on a clean gray background, 

 and the median space more or less black filled. The median lines are 

 connected by a cross line, and the median shade line is more or less 

 obvious. 



There is no marked agreement or disagreement in the sexual charac- 

 ters, which are rather indeiinito and without obvious type. 



In tabular form the species are as follows : 



ANALYTICAL KEY TO THE SPECIKS OF DEMAS. 



Median lines not joined or connected; median shade line distinct propinquilinea, 



Medi.an lines coiinected: 



Markings obscure, grayish-powdery, not well defined; no median shade line. 



flaiicornis. 



Markings black, sharply delined on a clear blue-gray ground; median shade 



line present ; median space more or less black lilled palata. 



DEMAS PROPINQUILINEA Grote. 



(Plates VTII, fig. 36, larva; IX, fig. 7, male; fig. 8, female adult; XIX, fig. 5, male 



genitalia.) * 



Charadra propinquiUnea Grote, Trans. Am. Ent. Soc, 1873, IV, p. 293, pi. i, fig. 96. 

 Apalela prop'uuin'dlnea Packard, Fifth Rept. U. S. Ent. Comm., 1890, p. 499. 

 r>emas propinqnilinea Smith, Bull. 44, U. S. Nat. Mus., 1893, p. 32. 



Ground color white or nearly so, with brown and black powderiugs, 

 giving the insect a dusty gray appearance, flead almost white, with 

 a yellow tinge, while the male antenna is distinctly yellow. Collar 

 with a vague dark shading centrally. Disk of thorax smoky posteriorly. 

 Patagiae blackish at tip and with two narrow blackish bands. Prima- 

 ries with all the markings blackish and fairly evident, though not 

 prominent. Basal line traceable through the cell. Transverse anterior 

 line broad, single, upright, or even inwardly oblique, with three feeble 

 outcurves. Transverse posterior line very evenly bisinuate, outwardly 

 denticulate on the veins, inwardly a little indefinite. Median shade 

 broad, diffuse, almost rigidly upright, and may be nearest to either 

 transverse anterior or transverse i)osterior line. It does not touch 

 either in my specimens, and the median lines are not in any way con- 

 nected. Subterminal line denticulate on the veins, a little irregular, 

 but as a whole parallel to the outer margin ; inwardly diffuse, outwardly 

 delined by a white shading. A dusky terminal line is. preceded by pale 

 lunules, which are variably distinct in the specimens. The orbicular is 

 round or nearly so^ brown ringed, centered with the white ground color. 



