THYRASSIA. Bg Dr. K. Jordan. 
51 
P. albicinctum Hmps. (8k). ? blueblack; the collar and 1 st abdominal ring (above) while, the other segm. alUcindum. 
(2—0) faintly bordered with bluish white. Wings transparent, with black borders; a long streak in the cell of the 
forewings which is connected distally with the costal margin is also black. Hindwings wilh rounded apex. Burmah. 
I regard as doubtfully belonging here a Zygaenid described as a Goe (= Illiberis). 
P. (?) sizala Swinh. (8k). In the forewings all the veins arise from the cell, the 2 nd median arising siuda. 
quite near to the 1 st median but approaching it outwards; in the hindwings the 2 nd median is widely seperaled 
from the 1 st median, 1 st radial missing or only slightly indicated, situated quite close to the 2 nd subcostal. 
Proximal pairs of spurs of the hind tibia at about two thirds of the shaft. Body mostly shining blue green, 
especially beneath. Forewings above purple brownish black, with numerous transparent spots and streaks. 
Hindwings transparent, the borders brownish black. Khasia Hills in Assam. 
14. Genus: Thyrassia Btlr. 
Antennae of the cd with long, ? wihi short pectinations, only slightly decreased at the tip, the last 
segments (about 7 —lOj more or less weakly toothed, the antennae reminding one of those of Procris statices. 
Palpi and the spurs of the middle and rear tibia very short, the latter with only one pair. In the forewings 
the 2 nd median in 3 / 5 ths. of the cell. Hindwings short, costa considerably bent, cell as in the forewings broad 
at the end, cut short. The veins arise either from the cell or partly stalked, the 1 st radial of the hindwings 
missing or present, the subcostal from the base to near the end of cell quite weak, hardly defined. Larva 
found by Piepers on Vitis; that of philippina according to Semper on Cissus. 
T. subcordata. Black with purple sheen. Collar, mesoscutellum, a portion of the abdomen, as well as 
a large spot on the hindwings, which often covers the greater portion of the wing, yellow. Forewings with 
two faint yellowish transparent spots behind the middle and a third in the apex. In the forewings the 2 nd to 
4 th subcostal stalked, the 2 nd subcostal of the hindwings missin. — In the North Indian form, subcordata Walk, subcordata. 
(=subcaudata Swinh.) (8 k) the yellow of the hindwings is not so extended as in the southern form aurodisca aurodisca. 
Hamps. which inhabits Ceylon and Southern India. 
T. procumbens Snell. (8k). Resembles the former; forewings with more distinct basal streaks, th eprocumbens. 
transparent spots somewhat larger, abdomen and hindwings with more extensive yellow. In the forewings only 
the 3 rd and 4 lh subcostal are stalked; the 1 st radial of the hindwings present. Java, Sumatra. Larva found by Piepers 
at Batavia upon Vitis trifolia. It is yellow, paler beneath, with white spots along the sides, further above and 
along the sides blackish brown spots. It pupates in a grey coccoon on the leaves. Pupa stage 11 to 12 days. 
T. penangae. Body as in the former species, abdomen with the exception of the last segment ringed 
with yellow. Transparent spots of the forewings as in procumbens, transparent in the cf, slightly yellow in the 
?; hindwings with a large transparent sp’ot from the cell to the hind margin and a yellow spot at the end of 
cell. In the forewings the 2 nd — 4 th subcostals are stalked together, in the hindwings the 1 st radial is either 
wanting or weakly developed (in a Bali cd in the Tring Museum the vein is developed on one wing and missing 
on the other). — The form penangae Moore (=diversa Walk) (Vol. 2 PI. 3i), which is distributed from penangae. 
Singapore northwards to China, has distinct- yellow forewing markings. — raffles! Moore from Java and Bali rafflesi. 
(probably more widely distributed) is smaller and has less yellow on the wings. 
T. aprepes Swinh. (8 k). Body similarly marked to that of the former species. Forewings with broad aprepes. 
half transparent smear at the base behind the cell; transparent area in cell and the three spots behind the 
cell out off inwards, the middle pane of the subapical transparent area longer and narrower than in penangae. 
Hindwings transparent from the base to the end of cell, including the cell. Veins of both wings arising from 
the cell, 1 st radial of the hindwings present. Sumba, and according to Swinhoe. Key. 
T. philippina spec. nov. (81). Nearly the whole of the head, the collar, the borders of the shoulder philippina. 
plates and metathorax and the abdominal rings, a long spot at tile end of the antennae, a basal streak on the 
lorewings and a subapical spot on both wings yellow; the transparent spots yellowish. Forewings with three 
transparent spots from the cell to the anal angle, the middle one double, the rear one drawn out. Hindwings 
with a yellow basal spot in front and a transparent one behind, besides the subapical spot. In the forewings 
the 2 nd and 3 rd subcostals are stalked or arise from the cell; the 1 st radial of I he hindwings present. Manila, 
Luzon. Semper falsely records it as penangae. The larva described by him as brownish yellow with nine 
white black bordered spots. From September to October in masses on Cissus acida, but mostly stung. Coccoon 
reddish, with white spots. Pupal stage 12 days. 
T. inconcinna Swinh. (= mimetica Turn) (81). Resembles philippina the spots on the hindwings smaller, the inconcinna. 
1 st radial of the hindwings wanting; the 2 nd and 3 rd subcost, of the forewings on a long or short stalk. Queensland. 
T. scutellaris spec. nov. (81). Blackish green; pronotum and mesoscutellum brownish yellow, faintly scutellaris. 
purple. Forewings with a band of 5 transparent spots in the middle, the 5 th spot very small; the,veins all 
arising from the cell. Hindwings with the 1 st radial present. Letli and Tenimber, 1 pair in the Tring Museum. 
