Pull . 16 . 11 . 1926 . TRIGONOPHORA; CHUTAPHA; CONSERVULA; COBALIODES. By Dr. M. Dratjdt. 237 
T. exornata Mschlr. (34 lx) is likewise a northern species, red-brown, in the median area and marginal exornala. 
area darker, with blackish, somewhat faded transverse lines which, on the averted sides, are bordered with 
somewhat whitish, and with light, brown-centred maculae surrounded by a darker colour; behind the indistinct 
light undulate line the veins of the marginal area are darker striped. Hindwing light brownish, at the margin 
darkened and with a purple reddish tint. Canada. New Foundland, and doubtfully in Colorado. It is certainly 
very near to contradicta , and they may even be synonymous. 
T. virguncula Sm., according to Dr. Barnes who examined the type, is entirely like S. devastator virguncula. 
(34 e), and both may be synonymous. 
25. Genus: Trigosiopliorsi Hbn. 
This genus being also known as Brotolomia Led. or Phlogophora Gn., beside palearctic and oriental 
species being greatly distinguished by the peculiarly notched shape of the wings, also contains a North Ame. ican 
species. The thorax is only clad with hair, the collar is most characteristically keel-shaped, the prothorax exhibits 
a large triangular tuft, the metathorax two large loose tufts; the abdomen is tufted as in the preceding genus. 
As to the peculiar way in which the wings are folded, when the insect is at rest, cf. Vol. Ill, p. 190. 
T. iris Gn. (34 h). The exterior is very much like the well-known palearctic meticulosa from which iris. 
it chiefly differs in the not dark-filled Y-shaped spot between the macxdae. From Canada to New York. 
26. Genus: Chuisafilaa Mr. 
Almost the same as the preceding, but the keel of the collar is absent and the distal margin of the 
forewing is not notched. As to the palearctic species which are partly confined to islands, cf. Vol. Ill, p. 190, 
pi. 44; the Indian forms vid. Vol. XI, p. 145, pi. 18 g. -—- In America but 1 species occurs: 
Ch. periculosa Gn. (3,4 i) is very similar to T. iris, but beside the anatomical differences the ground- periculosa. 
colour is a somewhat darker greyish-brown, the median area is in the type slightly darker. — In the form 
v-brur.neum Grt. (34 i) it is of a prominent deep dark velvety brownish-red colour. The species is very widely v-brunne- 
distributed from New Foundland to Colorado. — The uni-coloured reddish-brown larva with oblique darker um - 
striations and a lighter lateral stripe lives on various low plants. 
27. Genus: CoiiKmufsi Grt. 
This genus is also very similar to the preceding genera, with but one species in which the second palpal 
joint and the frons are long-haired; the thorax is clad with hair and hair-like scales, the prothorax is tuftless, 
the metathorax shows a loose tixft of a considerable size; the abdomen is roughly haired at the base and laterally, 
and on the first rings there are tufts. 
C. araodonta Gn. (34 i) is very similar to the two preceding species in the habitus and scheme of anodonta. 
markings, in the ochre-yellowish, pinkish tinted ground-colour somewhat strewn with brown, with a deep 
red-brown median area in the shape of a V, and therein with below confluent maculae; behind the rather 
indistinct undulate line the marginal area is darkened with red-brown. Hindwing pinkish-yellowish. Canada 
to New York. 
28. Genus: Cobaliocles Dyar. 
Separated from the preceding by the longer, straightly porrect, last palpal joint, the <$ showing long- 
combed antennae and but one abdominal tuft on the first ring. The genus lives in North America, a closely 
allied species, Cobalos dubiosa (Vol. Ill, pi. 44 c) was found in Madeira. 
C. angelica 8m. (34 i) has reddish-brown forewings being darker in the median area, with brown angelica. 
transverse lines being bordered with whitish on the averted sides and being connected by a prolongation of 
the coniform macula, and with brown-centred macxdae in whitish rings; the submedian area is irrorated with 
whitish, of a purer white towards the hind-margin with minute reddish-brown sagittae iix the centre before 
the undulate line. Hindwing reddish-brown. From California. 
C. franciscana Sm. (34 i) is somewhat similar, paler, the transverse lines are not connected, the franciscana. 
maculae smaller and quite indistinct; from the posterior line below the ceixtre a light stripe extends to the 
margin. Hindwing darker greyish-brown. California. 
