a 
THE GENERA OF BRITISH MOTHS. 6 
PLATE XXVI. 
No. 1.—The Silky Wainscot (Senta Ulva). No. 8.—The Twin-spotted Wainscot (Nonagria Gemini 
No. 2.—The Flame Wainscot (Senta Flammea). Puneta). 
No. 3.—The Small Rufus (Canobia Rufa). No. 9.—The Caterpillar of the Twin-spotted Wainscot. 
No. 4.—The Bullrush (Nonagria Typhe). No, 10,—The Striped Wainscot (Leucania Pudorina). 
No. 5.—The Female of the Bullrush, No. 11.—The Caterpillar of the Striped Wainscot. 
No, 6.—The Caterpillar of the Bullrush. No, 12.—The New Leucania (Leucania Vitellina), 
No. 7.—The Tipped Wainscot (Wonagria Extrema). 
Tue thirteenth sub-family of Noctuide is that of the Nonagridi, containing four closely related genera, Senta, 
Cenobia, Nonagria, and Leucania. 
The genus Senta is characterized by the pubescent antennz of the males, and the very long and slender 
abdomen, which is without crests. The anterior wings are rather narrow, and have the raised nervures of a 
lighter colour than that of the ground, which produces somewhat the appearance of regularly grained Oak, from 
which the popular name of this group, the Waznscots, is derived. They are at once distinguished from the following 
genus, Nonagria, by their much smaller size and by the slenderness of the body. The stigmas are traceable, but 
nearly obsolete. The larvae are smooth, and but faintly coloured, like all those that feed in the interior of the 
stems of plants. 
Senta Uive (the Silky Wainscot, No. 1) is found in the fens of Cambridgeshire, and has also been taken 
among the reeds on the banks of the Thames, at Hammersmith; but it is rare. The Caterpillar, as described by 
Treitschke, is of a yellowish ochreous tone, with delicate stripes, and feeds in the stem of the reed Arundu 
Phragmites. 
Senta Flammea (the Flame Wainscot, No. 2), the only other species, is by some placed in another genus 
(Meliana); but in the system I am following it is grouped very naturally with S. Ulve, though the still greater 
length and slenderness of the body, and the longer and more almond-shaped wings, may probably justify its 
separation. It is more scarce than the preceding species, not having at present been found in any other locality than 
the Cambridgeshire fens. The Caterpillar is unknown. 
The genus Cenodia contains but a single species, separated from Acosmetia on account of several minute 
structural distinctions ; it is placed by some in the genus Nonagria, with which it has considerable affinity ; but in 
the system I am following it is made to form a distinct genus, in accordance with a MS. arrangement of Stephens. 
The wings are broader and shorter than in Senta, and the body, which is more robust than in that genus, is yet 
elongated and thicker than in the insects assigned to the genus Nonagria. 
Cenobia Rufa (the Small Rufous, No. 3) is very rare, but has been taken near Whittlesea Mere, in 
Cambridgeshire, and in Norfolk. The Caterpillar is at present unknown. 
The genus Nonagria, in which are placed some of the finest of our marsh Moths belonging to the “ Wainscot” 
group, contains, as at present constituted, insects very closely allied to several of those placed in the following 
genus (Leucania), which, however, now forms part of a distinct sub-family, while several of the species ranged as 
Leucanie are far too distinct to group homogeneously together, so that we may look for a remodelling of 
these genera at no distant period. The larve of the Leucanie form a very distinct and well-marked group 
as not feeding on the pith of plants like those of Nonagridi. 
The genus Nonagria, as at present constituted, is said to be characterized by the strongly ciliated antenne of 
the male insects, and the slight pubescence of those of the females. The palpi are pointed upwards, the body is both 
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