J 1922 5 ] CLARK — TWENTY-FIVE NEW SPHINGIDAE 21 



This form is allied to H. brennus, but is darker-colored and 

 more uniformly colored. 



The antennae, palpi, head and thorax are of the identical dark brown 

 color of H. brennus. There are the same light side stripes and the same light 

 mesial thoracic line. The abdomen above is of the same light brown color, 

 but is unicolorous, lacking the white side tufts so prominent in H. brennus. 

 The legs and abdomen beneath follow closely the coloration of H. brennus. 



Fore wing above : A light brown basal area extends to the median point 

 of the costal margin, and to a point on the inner margin 6 mm. distant from 

 the base, or one third the distance toward the hinder angle. Within this 

 light area are two faint lines, curved distad and extending from points on 

 the costal margin 5 mm. and 8 mm. distant from the base to M2, where 

 they disappear. The entire remaining area of the wing is dark brown; the 

 line separating the light basal area from this darker distal portion runs 

 straight from inner to costal margin, slightly extended basad between R3 

 and Ml, and curving slightly basad as it approaches the costal margin. 

 The dark brown color of the postmedian area becomes gradually lighter 

 toward the distal margin. Within this dark area is a faint geminate line 

 extending from the median point of the inner margin toward a point 8 mm. 

 distant from the wing apex on the costal margin; it fades away, however, 

 at SC5. This line is faintly curved, first distad and then basad. Distally 

 from this line, parallel to it, and distant 1.5 mm., a line extends from 

 the inner to the costal margin, which it reaches at a point 5 mm. from the 

 apex, curving basad before reaching it. This line is sagittate at the veins, 

 the points being distad. Posteriorly of this sagittate line is a darker band 

 extending narrowly from the wing apex, and broadening as it approaches 

 the inner margin, until it fills the full space between the sagittate line and 

 the hinder angle, to which it broadens sharply between M2 and SM2. The 

 submarginal area between this band and the distal margin again is lighter 

 in color, and within this area a submarginal row of vein dots occurs, ac- 

 centuating a line lunulate between the veins, the lunules being convex basad. 



Fore wing beneath : Reddish ferruginous, irrorated with black. A dark 

 postmedian line extends from a point on the costal margin 11 mm. distant 

 from the apex to the median point of the inner margin, curving first slightly 

 distad and then basad; it is similar to the line of H. brennus, but curves 

 less basad as it approaches the costal margin. A faint angled line, 2 mm. 

 distant distad from this postdiscal line, extends from the costal margin to 

 R3. There is a series of vein dots on veins SC5 to Ml, inclusive, midway 

 between the postmedian line and the distal margin. A brown marginal 

 band, similar to that of H . brennus, is broadest on R2, where it attains a 

 width of 4 mm. ; the contrast in color between this band and the remaining 

 portion of the wing is less marked than in H. brennus. 



