SPHINX; TETRACHROA; SYNOECHA. By Dr. A. Seitz. 
10. Genus: Sphinx L. 
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This genus being otherwise called Hyloicus is nowadays mostly regarded in the catalogues as the typical 
genus of the family. It shows the typical Sphingid shape with a pointed abdomen and pointed wings in the 
most pronounced way. Most of the approximately 30 species are known from America; only about half a dozen 
occur in the palaearctic region, and but few grey species living on conifers penetrate to the northern parts of 
the Indian region. In Australia the genus is not represented at all. 
S. caligineus Btlr. (= caliginosus Ky., pinastri Leech) (Vol. II, pi. 36 d). Our figure shows that the 
species resembles a Sph. pinastri, in which the slate-blue dusting of the body and forewings has worn off by 
flying. The most essential difference is the almost uniformly brown colouring of the abdominal dorsum which 
is banded black and whitish-grey in pinastri. The proboscis of caligineus is entirely stunted, whereas in pinastris 
it is about as long as the body. - - Typical caligineus, how r ever, inhabiting Japan, does not reach the Indian 
frontier; nor does the form sinicus R. db J. inhabiting the part of China that is opposite to Japan (cf. Vol. II, sinicus. 
p. 236) traverse the northern frontier of the Indian region very far, and it is soon replaced bv the form brunnescensfrnomrscois. 
Mell which is intermediary between the type and sinicus. It exhibits a more brown than grey colouring, the 
inner-marginal area of the forewing above is dusted with rust-colour as far as below the oblique band, like the 
hindwing; the abdominal dorsum shows faint traces of bands. —- Larva separated from that of pinastri by the 
whole dorsum being dark red-brown and only the sides of the body showing two green stripes of about 1 mm 
width, being edged by brown longitudinal lines. Found on Pinus massoniana. The form is known from Hunan 
and Kwang-Tung. 
Note: This form is allied to S. oberthueri R. & J. (cf. Vol. II, p. 236* pi. 36 d) which most probably traverses the 
palaearctic southern frontier over to the Indian region in Sze-chwan. 
S. jordani Mell. Very near to caligineus, but still more inclined to pinastri. Thorax and forewing pale jordani. 
grey with a brownish shade. Tegulae inside sharply defined by dark brown, abdomen greyish-brown, the blackish- 
brown lateral band broad, the dorsal stripe narrower and feebler than in caligineus. Forewing above without 
the cellular streak, the other streaks distinct; hindwing pale grey. — Larva extremely similar to that of pinastri, 
the violettish-red dorsal stripe is narrow, the green sides are traversed by 3 white stripes. Head yellowish- 
brown, face striped; horn and feet dark red. On Pinus massoniana. Yunnan. 
S. uniformis Btlr. (= concolor Hmps.). Like the preceding ones a representative of S. pinastri, but uniformis. 
owing to the absence of the proximal pair of spurs on the hind tibiae separated as genus Thamnoecha R. d? J. 
It differs from pinastri (Vol. II, pi. 36 d) in the upper surface being quite unicoloured grey; collar and tegulae 
feebly marked black; through the grey forewing extend traces of a rusty-reddish band which is most distinct 
above the inner margin; between vein 2 and 4 two black streaks. Hindwing reddish-brown with grey fringe. 
Considerably smaller than pinastri, expanse only 50 mm. North India: Simla. 
c) Tribus Sphingulicae. 
A group of genera only comprising 10 species, altogether confined to the Old World, but entirely absent 
in Europe and Africa. They differ from most of the species of the preceding tribe in the short or even abortive 
proboscis, which also brings about the absence of a proboscis-nose in the pupae. Larva granulated. 
11. Genus: Tetrachroa R.&J. 
Here the proboscis is still present, but it is hardly half the length of the body. The genus contains but 
one genus which is easily recognized by the fox-coloured hindwings. 
T. edwardsi Olliff (= variegatum Rothsch.) (60 e). Forewing dark brown, before the apical portion edicardsi. 
white patches; hindwing fox-coloured, inner-marginal area yellowish-grey, with black bands. Queensland and 
New South Wales; rare. 
12. Genus: Synoeelia R.<l J. 
Only 1 Australian species apparently forming the connection with the pinastri-gvovrp of the genus 
Sphinx. Palpi small, proboscis short and feeble. Anterior and middle tibiae spined; anterior tibiae with a 
long terminal spike. In the hindwing the second subcostal branch is long-stalked with the 1st radial. 
S. marmorata Luc. The grey-marked forewing broader than in Sph. pinastri and caligineus-, fringe marmorata. 
with black dots. Easily recognizable by the transverse, white oviform spots extending along the sides 
of the abdominal dorsum from the base to the apex. Expanse of wings: 64 mm. Dawson District in 
