RHAGASTfS. By Dr. K. Jordan. 269 



T. boisduvali Bugn. {= cretica Bdv. pt., punctivenata Bull.) (42 d). Greyish yellow; head and thorax boi<<(.hwali. 

 with a light stripe on each side ; abdomen with 5 weak longitudinal lines, of which the median one is very indi- 

 stinct. The cavity at the apex of the first segment of the palpus sharply bounded and large. Forewing with 

 6 dark lines, of which the one running into the apex is usually accentuated on the veins by distinct dots. Hind- 

 wing black, distally paler, at the anal angle a greyish yellow patch which is continued costad as a short feebly 

 marked band. — An Indo-Malayan species which extends eastward to Lombok and Borneo and westward to 

 Ceylon, North India, Asia Minor, Crete and Turkey; doubtless a migrant which occasionally reaches South- 

 East Europe, where no specimens have been obtained for a long time. Fairly common in its native countries, 

 but much rarer than the following species. 



T. clotho. Similar to the preceding species. Abdomen without lines. Forewing with a thick line which cIoUm. 

 ends at the apex of the wing. — The Indo-Malayan subspecies clotho Drurij (42 d) occurs from Ceylon to Japan 

 and e^istward as far as Timor, Celebes and the Philippines. The larva is green or brown and bears a large ocellus 

 on segnient 4 and a small and blind one on 5 — 10. On Cissus. 



T. alecto. Reddish grey-brown, or brown-red. Head and thorax with a pale lateral stripe, abdomen 

 with a black basal patch at each side. Hindwing red, the base black, the distal margin brown. Varies indivi- 

 dually in the development of the lines on the forewing and abdonien ; the line running into the tip of the fore- 

 wing always distinct. Larva with 7 ocelli, of which the 5 posterior ones are smaller and often almost obsolete; 

 horn short and thick in the last instar. On Vitis, Psychotria, etc. Distributed from Crete to the Key Islands. — 

 cretica Bdv. (42 e). Pale brown, hindwing less bright red than in the next subspecies. This pale form occurs cretica. 

 in Syria, Asia Minor, Transcaucasia, North Persia and Turkestan, and has also been recorded from Crete (whence 

 the type-specimen came). — alecto L. (42 f) is deep brown, with a very distinct red tone: hindwing bright red. aledo. 

 In Afghanistan on Palearctic territory, elsewhere found in India, on Formosa and the Malayan Islands as far 

 as Key and Celebes. 



T. suffusa Walk., which is similar, bears broad stripes on the forewing and occurs northward as far 

 as China, but does appear to have reached the valley of the Yang-tse-kiang. 



T. japonica Orza (42 b). Olive-grey. Patagia with a ferruginous median line. Abdomen yellowish at japonica. 

 the sides, with a pale dorsal double line. Head and thorax with pale lateral stripe. The cavity at the apex of 

 the first segment of the palpus not very sharply bounded, the scaling around it being somewhat uneven. Fore- 

 wing striped, a thick double line commences at the costal margin close to the apex and runs to ^ of the hind 

 margin, where the line curves basad; at the outer side of this line a pale stripe, which is especially light-coloured 

 behind. Hindwing black costally, pale grey at the abdominal margin; from the anal angle costad extends a 

 diffuse pale band. Larva green or browai; on segment 3 a small white lateral dot, on 4 a white ocellus with 

 black border and brown pupil, on 5 a similar but smaller ocellus, and on 6 a blind round white spot, 

 from 5 or 6 to the horn a pale stripe, below which there are oblique shadowy bands. On Cissus. The nioths 

 from the spring until the autumn. .The spring-specimens, which are on the whole smaller and paler than the 

 summer-specimens, may be kept separate as f. vern. suifuna Stgr. (42 e). — The species is known to us from fuifunn. 

 Japan. Amurland, Corea, and China as far south as the Yang-tse-kiang, being a truly Palearctic insect. 



T. oldenlandiae F. (42 b), with a white double median line on the abdomen, and T. silhetensis Walk., ohlenlan- 

 with a simple, sharply marked, white abdominal median line, are widely distributed in the Oriental Region y^f',, .• 

 and presumably will also be discovered on Palearctic territorj'. 



42. Genus: Rlia$;;asti!« R. <fc J. 



In all the 12 species of this genus the palpi are so much apart that the base of the tongue is visible. 

 The first segment of the palpus bears the same cavity at the apex as in Theretra; segment 2 is at the apex 

 at least as broad as segment I and bears on the inside an apical tuft of scales. Larva as in Theretra. — 2 

 species are Palearctic, the other 10 Indian resp. Indo-Malayan. The genus does not extend eastward beyond 

 Borneo and Java. 



R. mongoliana Bull. (42 f). The smallest species. The cavity at the apex of the first palpal segment mo)i;ioHa>ia 

 is almost concealed by the scaling, being much less distinct than in the other species of the genus. Head and 

 thorax with distinct greyish white lateral stripe; on each side of the mesonotum a patch composed of reddish 

 brown and yellow scales; abdomen without stripe at the sides. Forewing sinuate below the apex, with a batnvn 

 apical spot and another brown spot in front of the hind angle ; on the disc 4 rows of dots or lines ; the submar- 

 ginal area sometimes partially greyish yellow. Hindwing blackish brown, with a feebly marked pale band. 

 Larva with 1 ocellus, which is placed on segment 4. Observed on Balsamina. — Japan, Amurland and Corea 

 southward to the Yang-tse-kiang, common. 



R. Jordan! Oberth. Much larger than the preceding species ; the distal margin of the forewing hardly at jordani. 

 all incurved below the apex; head and thorax without obvious light lateral stripe; abdomen in contradistinction 

 •to auriferu Bull, without yellow lateral stripe. Hindwing with a broad greyish yellow submarginal band which 



