AND THEIR TRANSFORM ATIONS. H 



the male. The caterpillar is thick and smooth, with ten feet, the thoracic segments scutellated, and the 

 penultimate one bimucronate. 



Species 1. — Himera pennaria*. — (Plate LIX., Figs. 1, 2.) — Varies from H to 2i inches in the expanse 

 of the fore wings, which are of a reddish buflf colour, slightly freckled with dusky atoms, and marked with two 

 oblique bars of purplish brown (sometimes confluent behind, which is the G. bifidaria of Haworth) between 

 which is a small spot of the same colour, and a white dot near the apex of the wing ; the hind wings paler at 

 the base, with a single striga behind the middle, which is almost obsolete in the females. It is a variable 

 species in the depth of the ground colour of the wings, and the intensity of the irrorations. The caterpillar is 

 grayish brown, varied with irregular white markings, especially down the middle of the back and sides ; the 

 penultimate segments with two short spines, and the thoracic ones with red dorsal patches. It feeds on oak and 

 other forest trees, and the moth appears at the end of the autumn, and is a common and widely-dispersed species. 



* SrnofrvMrs. — Phal<Btia G?ome(ro pennaria, Linnaeus ; Dono- I pi. 43, fig. g — i; Stephens; Wood, fig. 470. 

 ■na, 8, pi. 287, fig. 2 ; Haworth, Wilkes, pi. 79 ; Harris, Aurelian, j Geometra bifidaria, Haworth (variety). 



CROCALLIS, Treitschke. 



This genus has the male antennas much less strongly pectinated than in the last, and the palpi longer, with 

 the terminal joint slender ; the spiral tongue obsolete. The thorax is robust and woolly ; the fore wings are 

 subdentated on the apical margin, and are marked by a broad bar inclosing a dark discoidal spot. Tiie larvas 

 are ten-footed, cylindric, rugose, and very slightly hairy, with the head large. 



Species 1. — Crocallis elinguaria l'. — (Plate LIX., Figs. 3, 4.) — Varies from ll to 1} inch in the 

 expansion of the fore wings, which are of a bright pale buff colour ; the fore ones with a very broad, darker, central 

 bar, edged with slender brown lines, and inclosing a black discoidal spot ; the margins of all the wings with a 

 row of small dark dots ; hind wings with a dark central spot, and a very slight subcentral striga, which are, 

 however, occasionally more or less obsolete. The caterpillar is light brown, much variegated witli small darker 

 markings : it feeds on various fruit trees, oak, elm, &c., and the moth, which is a commsn and widely-dispersed 

 species, appears in August. The eggs in this species are oblong, and depressed, not unlike a thick 8vo. volimie. 



I" Syhonyme. — Phal. Geom. elinguaria, Linnaeus ; Haworth ; Albin, pi. 39, fig. 63, e — h, pi. 42, f. 67, e — h ; Wood, fig. 471. 



ODONTOPERA, Stephens. ENNOMOS. 



Mr. Stephens separates the type of this genus from the preceding and following genera, with which latter it 

 is associated by the Continental Lepidopterists, in consequence of its possessing an elongated spiral tongue, and 

 strongly bidenticulated fore wings, which are deflexed when at rest. The antenna are less strongly bipectinated 

 and the hind wings entire. The caterpillar, however, has much more the habit of that of Crocallis than of Geometra. 



Species 1. — Odontopera bidentata «■. — (Plate LIX., Figs. 5, 6.) — This species measures rather more than 



2 inches in the expanse of the fore wings, which are of a dirty buff colour, or reddish brown, and thickly irrorated 



with dark scales, with two undulated strigte ; the basal one almost obsolete, and between them a dark brown 



ring ; the hind wings also with a discoidal brown annulus, behind which is a slender obscure fascia. The 



caterpillar is very variable in colour, being chiefly green or grayish brown, thickly varied with dark markings, 



those on the back being arranged somewhat diamond-wise. It feeds on willow, alder, and other trees, and the 



moth appears in April and June, being double-brooded. It is not a rare species. 



•= Synonymes. — PhttltBna Geom. bidentata, Linn. ; Albin, pi. 96, I Geometra bidentaria, Fabricius ; Haworth. 

 fig. a — c; Harris, Aurelian, pi. 10, fig. s — x ; Stephens ; Wood, fig. 472. I Geometra dentaria,lin\>neT; Esper ; Boisduval. 



c 2 



