2 Pl. 21. 1, 2. PURPLE MARBLED. 3. SMALL MARBLED. 4. SILVER-BARRED. 5. SILVER HOOK. 6. _THALPOCHARES PAULA_. 7. MARBLED WHITE-SPOT. 8. STRAW DOT. 9. ROSY MARBLED. 10, 11. SMALL PURPLE BARRED. 12. SPOTTED SULPHUR. {55} The species is especially common in the south-west of England, chiefly on the coast, but it seems to occur in most suitable localities in nearly all the southern counties, and its range extends to Gloucestershire on the west and to Norfolk on the east. About seventy-five years ago Stephens used to obtain specimens on a chalky ridge near Hertford, and recently the moth has been found at Hitchin in North Hertfordshire. THE PURPLE MARBLED (_Thalpochares ostrina_). Two Continental specimens of this little moth are shown on Plate 21, Figs. 1 typical, 2 ab. _carthami_. An example of this species was obtained in June, 1825, in a lane near Bideford, Devonshire, and Stephens refers to this as the only specimen of the species that up to that time (1830) had been noted in England. Nothing more was heard of _T. ostrina_ until 1858, when another Devonshire specimen was taken, this time near Torquay, on June 8, and during the month several others were captured on the coast; two were also secured in the Isle of Wight, and one in Ayrshire, Scotland. In 1865, a specimen was recorded as taken in July a few years previously at Pembrey, South Wales; 1880, one at Dover in September, and one near Swanage; Barrett mentions specimens taken on the Culver Cliffs, Isle of Wight, in 1859. It seems unquestionable that examples of this species captured in Britain, and also of the other two _Thalpochares_ to be presently referred to, are immigrants, and it is quite conceivable that besides the specimens captured here, others which have escaped detection may also have arrived with them. The distribution abroad is extensive, embracing South Europe, Turkey, Asia Minor, Egypt, North-west Africa, Madeira, and the Canary Isles. It has also been found in France and Germany, but its occurrence in the latter country has been even less frequent than in England. {56} THE SMALL MARBLED (_Thalpochares parva_). This species, of which a foreign example is represented on Plate 21, Fig. 3, has a similar distribution to that of _T. ostrina_, only it does not seem to occur in Madeira or the Canaries, and its eastward range extends to Central and Southern India. The fore wings are pale reddish ochreous; first line, oblique, dusky, slightly waved on lower half, bordered inwardly with brownish and outwardly with white; second line, dusky and irregular.