1889. 



THE YOUNG NATURALIST. 



The divisions of the inferior wings wide, the third segment with the 

 anal angle distinct. The anterior wings flat, covering the inferior, 

 the inner margin not toothed " (Dr. Jordan, " Entomologist's Monthly 

 Magazine," Vol. VI., 120.) To this Dr. Jordan adds : " That this 

 insect is rightly separated from the genus Platyptilus of Zeller there 

 can be no doubt ; the difference in the palpi would be sufficient for 

 this." 



C. flwdodactylus. — This species was placed in the genus Ptevophoms 

 by Fabricius, but removed into a separate genus by Wallengren. 



Synonymy — Rkododactylus, Fab. Ent. Sys. III. p. 347, 7 ; Vill., Car. 

 L. Ent., IV., 547 ; Hub. 8 ; Treit. IX., 2. 228 ; Haw. 478 ; Dup. XL, 

 313, 4 ; Stephs. 111., IV., 375, PI. 41, 3 ; Wood, 1645 ; Zell. Isis (1841) 

 772, Lin. Ent. Zeit., VI., 326; Tgstr. Bidrag, 154 ; H.-S., V., p. 366 ; 

 Frey 401, 



Imago — Fabricius' original description of this species (" Entomo- 

 logia Systematica," &c, Vol. III., p. 347, No. 7) is as follows : — 

 " Alis fissis flavescentibus : strigis albis, anticis bifidis, posticis 

 trifidis." " Alae anticae flavse basi obscuriores strigis duabus albis, 

 anteriore obliqua usque adstrigam posteriorem fissse. Posticse trifidae 

 lobis duobus anterioribus flavescentibus, tertio albo macula magna 

 ante apicem ferruginea- Corpus ferrugineum thoracis lateribus flave- 

 scentibus." The fore-wings are divided into two lobes, the apex is 

 pointed, and the ground colour rich ochreous brown much scattered 

 with white scales along the costa, which develop into a large whitish 

 blotch in the centre of the costal area ; a slender white fascia, parallel 

 to the hind-margin, extends from the costa to inner margin, the inner 

 margin whitish and connected by some whitish scales (in some speci- 

 mens) to the pale costal blotch ; fringes, outer part whitish, inner dark. 

 Hind- wings divided into three plumules ; shiny ochreous brown ; the 

 third plumule white along its inner edge ; fringes brown with white 

 tips to the plumules. Head and thorax the colour of the fore- wings, 

 abdomen the same colour, but with whitish scales. Stainton's diag- 

 . nosis of the species is: — " io'"-ii"'. F.-w. dark ochreous, brownish 

 in the middle, with a slender yellowish-white fascia before the fissure ; 

 third feather of h.-w. white at the base, the tip brown" ("Manual," 

 Vol. II., p. 440. 



Larva — The larva varies in colour from almost pure yellow to 

 pure green, with a purplish dorsal stripe which varies somewhat in 

 width ; the sub-dorsal and spiracular lines indistinct, pale yellowish ; 

 the spiracles themselves brownish ; the skin roughened and covered 

 with short hairs. I cannot do better than refer to the much fuller 



