Pull. 13. VIII. 1930. 
800 
SYSSPHINX. By Dr. M. Dbaudt. 
S. colla Dyar is very similar to colloida, somewhat larger, less densely strewn with blackish, the forewing colla. 
with white cell-end maculae. An indistinct blackish cellular spot on the red hindwing. Described from Mexico. 
S. colloida Dyar (137 a). Eorewing loamy yellowish-grey, the margin feebly tinged with lilac, densely colloida. 
speckled with blackish, only the exterior transverse line indistinctly noticeable by somewhat denser speckles, 
somewhat more densely speckled at the cell-end, occasionally with a feeble whitish dot in the centre. Hindwing 
carmine in the disc with a large black central spot which is blurredly continued towards the costal margin, 
marginal area as on forewing. Mexico (Colima). 
S. bicolor Harr. ( = distigma Walsh.) (137 b) is ochreous, densely striated darker, or light Isabel- bicolor. 
yellow often with a faint pink tinge; antemedian line scarcely noticeable, posterior transverse line slightly 
curved, interrupted by the veins from before the apex to the centre of the inner margin; 2 discal spots may 
be quite absent, or only one present. Hindwing carmine, ochreous at the margin, lighter towards the anal angle. 
Body ochreous. - suprema Neum. is brightly coloured with 2 very large discal spots. Iowa. immaculata suprema. 
Jewett, from Ohio, is not striated at all, except traces in the $. Larva green, the 2nd and 3rd rings each with imma culaia. 
2 pair of very long red thorns with white tips, the last ring bears one of these thorns, the 6th to 9th rings 
exhibit short silvery horns; a red lateral stripe is bordered with white beneath. On Gleditschia and Gymnocladus. 
S. isias Bsd. (137 b) is very similar to hoegei, but of a dull red-brown colour, a violet tinge at the margin, isias. 
densely dusted with brownish ochreous in the median area, but likewise variable as hoegei ; the white discal 
spot may be single or double, in the latter case occasionally extraordinarily enlarged. Hindwing carmine in 
the disc, dull red-brown in the marginal area. Mexico, also observed in the southern parts of North America. 
Larva very much like that of bicolor, but with shorter horns; on Parkinsonia, Prosopis juliflora and Acacia 
flexicaulis. 
S. isara Dogn. resembles subangulata, but it has less pointed forewings and rounder hindwings. The isara. 
median area of the forewing is reddish-yellow, the base and margin yellow, densely dusted with lilac, all 
striated brown, the $ is more monotonously rusty yellow, but probably variable; transverse lines brown, the 
anterior one near the base, sinuate, the posterior one from the ajjex almost straight to the 2nd third of the 
inner margin, a thick brown discal dot between them. Body rusty yellow with a lilac tinge. Another is of a 
deeper rust-brown colour, more uniformly and intensely striated, the $ quite ochreous with a slight pink tinge. 
Very closely allied to isias, and Dognin presumes it to be a variety. Expanse of wings: $ 52, 9 65 mm. 
San Salvador. 
S. lufeciae Bouv. is an Argentinian species; apex pointed, margin slightly convex; forewing smoke- luteciae. 
brown, with a feeble pink tinge, anterior transverse line and discal line absent; posterior oblique line straight 
and very obliquely from the apex to the interior quarter of the inner margin, dark brown, bordered with light 
lilac inwards. Hind wing as forewing. Haute Parana. 
S. niodena Dyar (137 b) is a pretty small very light yellow species, occasionally striated rust-brown, modena. 
base and marginal area sometimes with a light lilac pink tinge, transverse line as in isias and hoegei, 2 white 
spots in a brownish blotch in the median area. Hindwing light yellow with a red inner-marginal blotch and, 
separated from it, a cross-vein spot. Mexico. 
S. paranensis Bouv. in general resembles bicolor, but the forewing is somewhat broader and the apex paranensis. 
of the hindwing rounder. The ground-colour is a darker grey, very finely striated darker, lighter and with a 
pinkish-red tinge in the median area; discal spot absent in both wings. Hind wing rosy red in the two basal 
thirds, distal third yellowish-white with a feeble pink tinge; sometimes a posterior transverse line is indicated 
by a somewhat deeper pink. Expanse of wings: 51 ,$ 70 mm. Parana. 
S. totoma Schs. Head and thorax of <$ reddish-grey; abdomen above blackish, beneath grey. Eorewing totoma. 
reddish-grey narrowly at the base and at the margin behind the distal line, the median area brown, 
striated dark brown; the dark grey distal line extends from the costal margin near the apex to the centre of 
the inner margin; at the cell-end a white spot. Distal and inner margins with dark grey fringe. Hindwing pink, 
whitish at the distal margin. $: fore wing of a plain light greyish-brown colour, striated darker, hindwing light 
pink with a greyish-brown distal margin. Expanse of wings: $ 59, $ 65 mm. Castro, Parana. 
S. diluta Rothsch. (137 c). Body reddish yellowish-white above, abdomen with a pink hue above 1 diluta. 
shape of wings as in crocata Bsdv., but longer, with a more pointed apex; reddish light yellow, feebly shaded 
with greyish-brown in the marginal area, particularly along the blackish-brown distal oblique line extending 
from the apex to % inner margin; the anterior line is quite indistinct, angled in the cell, a feeble blackish-brown 
cellular spot between them. Hindwing light carmine, turning paler reddish yellowish-white towards the margin. 
North Argentina. Length of forewing: 32 mm. 
S. jucunda Wkr. (= dimidiata H.-S., smithii Elirm.). Reddish-brown with a lilac tint, head and under jucunda. 
surface yellowish-white; the black oblique line of the forewing extends from the apex along the median to the 
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