290 NORTH AMERICAN TRYPET1NA. 



higher than broad and reaches from the fourth vein to the poste- 

 rior margin ; the third spot forms 'a broad margin of the tip of 

 the wing, which begins not far beyond the first longitudinal vein 

 and, gradually increasing in breadth, reaches beyond the begin- 

 ning of the second posterior cell. The outlines of these three 

 spots are irregular and sinuate. The remaining surface of the 

 wings is grayish-hyaline ; held against the light this grayish 

 surface shows some round, whitish spots of a rather considerable 

 size, occurring especially within the sinuosities along the margins 

 of the dark spots, however, without following their outline exactly. 

 In some places the grayish tinge of the wings becomes infuscated, 

 thus forming several other, probably very variable, spots; the 

 typical specimen shows the following ones : a narrow little spot 

 in the middle of the anterior margin of the costal cell ; a hook- 

 shaped spot, which begins at the anterior end of the third brown 

 spot and runs to the second vein; a small, thimble-shaped spot, 

 situated on the fourth vein, a little beyond the posterior crossvein 

 and directed forwards ; a little spot upon the posterior margin, 

 in the middle between the second and third of the large brown 

 spots ; a punctiform dot upon the middle of the discal cell ; a 

 larger spot, behind the preceding one, within the third posterior 

 cell ; finally, behind the latter, upon the posterior margin, another 

 small, faded, little spot. It is probable that, sometimes, the 

 greatest part of the grayish surface becomes brownish, and then 

 it may happen that, in some specimens, beyond the root of the 

 wing, but little pale colored portions remain, except the large 

 drops with a whitish reflection. The fact that the described 

 specimen does not seem to be a fully matured one, serves to 

 confirm this supposition. 



Hab. Mexico (Wiedemann). 



Observation 1. — Description and figure are prepared after the 

 same specimen in the Berlin Museum, which Wiedemann had 

 before him in drawing his description. In the figure, the 

 engraver has represented the large whitish drops somewhat more 

 vividly than they appear in nature. The relationship of T. 

 Lichtensteinii to the two preceding species, is close enough to 

 enable us to place it in the genus Icterica. 



Observation 2. — Among the species described in the sequel, 

 Trypeta eequalis (Tab. X, f. 20) stands next to the species of 

 Icterica in the shape of the wings. But, besides the fact that 



