THE GENERA OF BRITISH MOTHS. 141 
(Phiaris) there are four species, LZ. trimaculana (the Elm Marbled T), Z. excructana (the Dingy Red T), 
L. Penklevriana (the Variable Red T), and Z. obfusana (the Blunt-winged Bloteh-back T). In the fourth 
section (Ludemis) there are two species, Z. nevana (the Marbled Single Dot T), and LZ. geminana (the Twin- 
Spot Single Dot T). 
The genus Phieodes. The general structural characters of this genus closely resemble those of the last, 
but the markings on examination of the species selected for illustration, will be found to be tolerably distinct. 
The palpi are longer than the head, the fore wings three times as long as broad, and have a fold reaching 
half their length. There are four British species. 
Phicodes immundana (the Angle-barred Single Dot T, No. 10), The Caterpillar of this species is 
ereenish-gray, with the head brownish. It feeds upon the foliage of the Birch, in rolled leaves ; there are two 
broods ; the perfect insect appearing in April and May, and again in September and October. It is rather scarce, 
but very widely distributed. 
The other species are P. tetraquetrana (the Single Dot T), P. Demarniana (the Blotched Single Dot T), and 
P. ercnana (the Notched Single Dot T). 
The genus Anchylopera, The insects assigned to this genus have the antenne filiform ; the palpi shorter 
than the head ; the fore wings rather more than twice as long as broad, the tip being sometimes rather hooked, 
as implied by the generic name. 
There are twelve British species, which vary much less than those of many of the preceding genera ; but 
they are in some cases so distinct that it has been found convenient to divide the genus into two sections. 
Anchylopera Lundana (the Lundian T, No. 11), This pretty and characteristic insect belongs to the 
typical section of the genus. It is double brooded, being found in May, and again in September. The Caterpillar, 
which feeds upon the leaves of the Meadow Vetch webbed together, is described as being of a greenish gray, with 
the head yellowish brown, and the second segment pale. The perfect insect is common, and very generally 
distributed. 
The other species of the typical section (Anchylopera) are A. Upupana (the Dark Hook-tip T), A. 
Mitterbacheriana (the Red Hook-tip T), A. diminutana (the Festoon T), A. derasana (the Hook-tip 
Blotch-back T), 4A. Myrtillana (the Myrtle T), A. comptana (the Delicate Hook-tip T), A. biarcuana (the 
Double Arched T), A. waeana (the Bridge T), A. waguicella (the Heath Hook-tip T), A. siewlana (the Hook- 
tipped Streak T). The other section (Philacea) contains but one species, A. Ramella (the Hooked Marble T), 
the markings of which are of a distinct character, and the hook-tip of the anterior wings less marked. 
The genus Bactra. The insects assigned to this genus have the antenne simple, the palpi longer than the 
head ; the fore wings more than twice as long as broad, and the tip acute. The Caterpillars of some of the 
species are sap feeders, generally in rushes. Some of the species vary exceedingly, especially B. lanceolana, 
four of the varieties of which formerly made distinct species. There are three British species. 
Bactra furfurana (the Mottled Bran T, No. 12). This species appears in June, but it is rare and 
local; at the same time it is widely distributed, being found in the southern counties, and as far north as 
Edinburgh. 
The genus Cartella. The insects assigned to this genus have the palpi much longer than the head, and 
the fore wings of very long proportion, being nearly three times as long as broad. The front of the anterior 
wings is arched at the shoulder, and the fold in the wings of the male extends about one third of the 
entire length of the wing. 
The Caterpillars feed_in the catkins of the Bireh. 
Cartella bilunana (the Double Crescent T, No. 18). The Caterpillar has not been accurately described, 
but is said to feed in the catkins of Birch in April. The perfect insect appears in June, and is not 
uncommon, 
The genus Hypermecia. The insects assigned to this genus have the antenne simple and the palpi 
longer than the head ; the anterior wings are of narrow proportion, and they are scarcely arched at their front 
edge, at the shoulder. There is but one British species. 
Hypermecia augustana (the Red Cross T, No. 14). The Caterpillar of this species is described as pale 
