IPNEA.—PCNA. 483 
3. Ipnea (?) mapeta, sp.n. (Tab. XI. fig. 12.) 
Primaries very pale fawn-colour, thickly irrorated with yellowish-brown scales, the costal margin from the 
base to near the apex edged with yellowish-brown, and crossed from the costal to the inner margin by 
three faint waved yellowish-brown lines—the first near the base, the second about the middle, and the 
third beyond the cell,—a submarginal waved greyish line extending from near the apex to the inner margin 
close to the anal angle, the marginal line with black points; secondaries pale fawn-colour, the base and 
the inner margin pale yellow; the fringes of both wings brownish-fawn-colour; the underside pale 
yellowish-fawn-colour, without markings of any kind: head and front of the thorax yellowish-brown, 
the rest of the thorax and the tegule fawn-colour, the abdomen and legs yellow, the antenne pale brown, 
the palpi dark brown. Expanse 1? inch. 
Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith). 
A few specimens. This insect appears to be allied to Zpnea, but the palpi are more 
slender and the outer margin of the primaries is more rounded; I only include it 
provisionally in this genus. 
DIDUGUA, gen. nov. 
Female. Head large, the eyes prominent, the thorax broad; the abdomen stout, not extending beyond the 
wings. Palpi long, slender, and porrect, clothed with rather long scales ; the first joint small, the second 
joint long, the third joint more than half the length of the second. Antenne rather short, quite simple. 
Legs slightly thickened. The primaries long and broad, with the costal and inner margins straight, the 
outer margin nearly so, but slightly rounded at the anal angle; secondaries with the costal aud inner 
margins almost straight, the outer margin rounded at. the anal angle; the fringe of both wings rather 
long. 
Type Didugua argentilinea. 
The species for which this new genus is proposed has, at first sight, much the 
appearance of a Noctuid, but the form of the palpi at once shows that it is more closely 
allied to the Deltoides ; its true position in the latter is, however, very doubtful, the 
only specimens before me being females. 
1. Didugua argentilinea, sp.n. (Tab. XL. fig. 13, 2.) 
Female. Primaries brown, darker along the middle from the base almost to the outer margin, a silvery-white 
notched streak extending from near the base almost to the outer margin, the outer margin with two fine 
lines extending from the apex to the anal angle, the fringe dark brown ; secondaries brown, darker round 
the outer margin from the apex to the anal angle, the fringe pale brown; the underside uniformly pale 
brown, without markings of any kind: head, thorax, and abdomen dark brown, the antenne and palpi 
yellowish-brown, the legs brown. Expanse 13 inch. 
Hab. Guatumata, in the city at the electric light (Rodriguez), San Gerénimo 
(Champion). — _ 
Our figure is taken from the San Gerénimo specimen. The example from Guatemala 
city is slightly larger and also darker in colour. 
PENA, gen. nov. 
Male. Head small, the thorax and abdomen slender, the latter extending beyond the wings. Palpi small, very 
short, porrect ; the first joint small, the second joint large, the third joint very small, Antenne rather 
long, more than half the length of the primaries. Legs short, thickly clothed with hairs. The primaries 
long and narrow, with the costal and inner margins quite straight, the apex pointed, and the outer margin 
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