Calocampa. 243 



line indicated by its being shaded behind, dark and irregularly zigzag; abdomen not crested. 

 The variety Somniciilosa, Herr.-Schaff. (^Lambda, Fabr.), has wholly unicolorous bluish-grey fore- 

 wings with scarcely any markings, only the two black streaks being distinct. Expands from li to 

 if inches. Inhabits Northern and Central Europe, but scarce and local ; Somiiiculosa appears to 

 be almost confined to the neighbourhood of Berlin. The larva is bluish-green, dotted with whitish, 

 with three whitish lines on the back, and a yellow stripe on the sides. It is said to feed on Myrica 

 Gale, and probably on alder also. 



*6. X. Oniit/wpus (Hufn.), Rhizolitha (Fabr.). — Fore-wings pale grey, slightly varied with 

 brownish, with all the transverse lines indistinct ; a black branching basal streak, shaped like a 

 stag's horn ; the claviform stigma distinct, and bordered by a black streak ; the reniform stigmi 

 constricted in the middle, and bordered with black below, and the abdomen not crested. Expands 

 about \\ inches. Common in many parts of Europe. The larva is verdigris-green, reticulated 

 with white, with three white lines on the back, and one on the sides. It feeds on oak and sloe. 

 The moth is figured at PL iZ, Fig. 11. 



7. X. Lapidea (Hiibn.). — Fore-wings pale bluish-grey, slightly varied with brownish, with no 

 basal streak ; all the transverse lines quite indistinct ; the only indication of the stigmata is 

 a black streak representing the lower border of the reniform stigma ; and there are also a few fine 

 black longitudinal streaks below the middle and on the high margin ; abdomen not crested_ 

 Expands about \\ inches. A rare species, inhabiting South Europe and the Valais. The larva 

 lives on cypress and juniper, and constructs a very fine cocoon of strong silk on the surface of the 

 ground, under moss. 



8. X. Merckii (Hiibn.). — Fore-wings ashy-grey, with a slight bluish tint; most of the nervures 

 black ; the stigmata and transverse lines obsolete, but the latter indicated by very deep zigzags. 

 A slight brown shade runs from the tip, and is lost before reaching the inner margin. Expands 

 about 2 inches. A scarce species, inhabiting Southern Europe. The larva feeds on alder. 



GENUS II. — CALOCAMPA (STEPH.). 



Rather large moths, expanding from 2 to 2| inches, the fore-wings long and narrow, with 

 slightly-curved and much-waved fringes ; brown or grey, with darker longitudinal dashes ; the 

 orbicular and reniform stigmata visible, and the subterminal line indicated by a long pale W 

 in the middle ; and there are dark dots separated by white ones on the nervures in the position of 

 the suffused submarginal band ; the other markings are indistinct ; the hind-wings are triangular, 

 brownish-grey, with a slightly-curved hind margin. The larvK feed on low plants in June and 

 July, during the day. The moths appear in September and October, and hybernate, re-appearing 

 in March and April. They fold their wings longitudinally round their bodies. Both species are 

 common in Europe and Siberia. 



*I. C. Vctitsta (Hiibn.). — Fore-wings pale brownish-grey on the costal half, whiter towards 

 the base, and dark brown on the inner marginal half, with a long black streak in the middle of the 

 subterminal line, which extends to the reniform stigma ; the orbicular stigma is absent or indistinct. 

 The larva is green, with three light lines on the back, three white dots between, on each segment, 

 and a yellow stripe on the sides, bordered above with brown. 



*2. C. Exoleta (Linn.), {Stvord-grass Moili). — Fore-wings light violet-grey, with the costa 

 brown ; the orbicular stigma distinct and rather long, and small black arrow-heads before the 

 middle of the subterminal line ; the reniform stigma bordered behind with a black dentated spot. 

 The larva is green, with two yellow subdorsal stripes (sometimes absent), above which are two 



