226 



HYDKOECIA. By W. Warren. 



petasitis. 



vindelicia. 



amurensts. 



micacea. 



gnsea . 



brunnea. 



intacta. 



moesiaca. 



leucographa, 



borelii. 



umbrosa. 

 flavidior. 



perludda. 



yellow, defined on each side by brown; median shade brown, angulate, accompanied by yellow spaces; 

 orbicular and reniform stigmata large, yellow, with brown outlines; the orbicular diamond-shaped; hindwing 

 pale yellow, with indistinct outer sinuous shade. Hi, Tibet. 



H. petasitis DM. (46 d). Forewing dull purplish grey, shaded with olive brown; the median shade, 

 the outer half of median area, the terminal area except at apex, and a costal patch before submarginal 

 line, all of this latter colour; lines as in micacea, but the outer line more curved, sometimes visibly bent 

 on vein 5; submarginal line generally preceded by a narrow dark cloud; the stigmata large, pale grey, 

 with dark outlines; hindwing dull dark gre3 r with a darker outer line and submarginal cloud; continental 

 specimens, = vindelicia Frr., are larger and better marked than the dull British petasitis. Found in Bri- 

 tain, Germany, Austria, Hungary, the Bukowina, and Boumelia; also in the Altai Mts., W. Siberia. Larva 

 dirty bone-colour, with the dark dorsal vessel showing through; the tubercles black; spiracles white in 

 black rings; head, thoracic, and anal plates brown; feeding in the stems and roots of Petasitis officinalis. 



H. amurensis Stgr. (46 d). Like petasitis, but larger, and more glossy, petasitis having a more 

 powdery appearance; the lines and markings more obscure. Amurland and Japan. 



H. micacea Esp. (= cypriaca Hbn.) (46 d). Forewing pale greyish ochreous, or dark grej^, or 

 brownish grey with strong rufous tinge ; the median area darker, suffused with olive brownish, except along 

 costa and inner margin, especially between median shade and outer line, the paler ground colour showing 

 only in the terminal third; inner and outer lines brown; the inner excurved below middle, the outer 

 oblique inwards, curved only below costa, generally followed by a paler, sometimes whitish line; upper 

 stigmata large, of the ground colour, with fine brown outline; a dark median shade; submarginal line very 

 variable, sometimes preceded by a dark shade, sometimes also followed by the same, in other cases hardly 

 visible, sharply angled on vein 7, above which it is preceded by a dark costal patch; veins towards 

 termen dark; hindwing luteous, generally grey -tinged, with a dark outer line and submarginal cloud; the 

 typical form is brownish grey tinged with rosy; — the paler, more ochreous, forms, with very little red 

 in them are ab. grisea Tutt (46 d) ; — the dark olive grey, also without the red flush, are ab. brunnea Tuit 

 (46 e); a $ without locality, but certainly continental and probably French, ab. intacta ab. nov. (46 e), 

 has the forewing wholly suffused with rosy brown, the median area only a little deeper in colour; the hind- 

 wing pure yellowish ochreous without marking of any kind; the underside rufous yellow, deeper rufous 

 along costa and termen of both wings, without trace of cellspot and outer line, which are both distinct in 

 all the other forms. Occurs through North and Central Europe, extending to S. France, N. Italy, and 

 S. Bussia, also in Siberia, Amurland, and Japan, those from the last locality belonging to the larger form. 

 Larva reddish flesh colour; dorsal line deeper; sides more yellowish, the lateral line above the feet dotted 

 with black; tubercles and spiracles black; thoracic and anal plates yellowish; head shining redbrown; in 

 roots and stems of marsh growing plants, such as Bumex aquaticus, Equisetum arvense. 



H. moesiaca H. Schaff. (46 e). Of the same size and shape as xanthenes, but the ground colour is 

 yellower, less suffused with grey. Becorded from Bulgaria and Armenia- 

 Sect. Y. Antennae of £ lamellate, with short thick curved teeth. 



H. leucographa Bhh. (= lunata Frr., illunata Gue?i.) (46 e). Forewing dull yellow, thickly sprinkled 

 with olive rufous, and more or less entirely suffused with olive brown; the outer half of the median space, 

 especially towards inner margin, remaining yellowish in the $; the suffusion being deeper and sometimes 

 purplish grey in the <J ; inner and outer lines double, brown ; the inner vertical, excurved only below vein 1 ; 

 the outer with the inner arm dentate-lunulate, the outer thicker and parallel; median shade thick, 

 irregularly crenulate, plainer below middle; all 3 stigmata white; the claviform short and traversed by. the 

 outer arm of inner line; orbicular round, with dark scales at centre and brown ring; reniform with the 

 veins across it dark brown and a brown narrow lunule on the discocellular; submarginal line j^ellowish, 

 lunulate-dentate, preceded by a darker shade, ending in a yellow patch at costa; hindwing dirty luteous, 

 with the veins dark, and in well-marked examples with dark cellspot, outer line, and submarginal shade. 

 A large and local species, occurring only in Germany, Saxony, Galicia, and Hungary. — The ab. borelii 

 Pierr. is a small yellow form, taken in the neighbourhood of Paris. The dark-suffused examples, with 

 greyer, strongly marked hindwings may be distinguished as ab. umbrosa ab. nov. (46 f); the unsuffused 

 yellower specimens as ab. flavidior ab. nov. (46 f). Larva pale, shining, yellowish in front, from the second 

 segment onwards with a violet brown band on each segment; tubercles and spiracles black; head and 

 thoracic plate orange brown; living in the stems of Peucedanum officinale and longifolium. 



Sect. VI. Antennae of $ with tuberculate fascicles of cilia. 



H. perlucida spec. nov. (46 f). Forewing pale greyish yellow; the veins, lines, and shading brown; 

 space before inner line partially filled Avith brown; the inner line waved, vertical; outer line double, oblique 

 from the subcostal bend, the inner arm dentate-lunulate, the outer continuous; followed by a grey brown 

 band, with denticulate outer edge, defining the pale submarginal line, beyond which the terminal area is 

 greyish; a brown median shade bent in middle; claviform stigma of ground colour, with brown outline; 

 flu' orbicular and reniform yellowish edged with brown, the reniform with a dark lunule on the dis- 



