Annals of the Transvaal Museum 
i73 
Cerura Marshalli. 
Cerura marshalli Hmpsn. A.M.N.H. 8. v. p. 456 (1910). 
I have a $ and $, both from Salisbury, bred in Dec. ’12‘by Mr R. Jack, 
who kindly presented them to me. In the A the outer margin of the fore wing 
is very oblique and the wing very narrow. 
Cerura Spiritalis. 
(PI. I, fig. 10; PI. Ill, figs. 7-9; PI. V, figs. 1-3.) 
Cerura spiritalis Dist. A.M.N.H. 7. 111. p. 464 (1899). 
This species I have from Rietfontein 57 (Pretoria distr.) bred by me in 
Jan. 1905; also from Barberton (collected by Miss de Beer); White River 
(Cooke) ; Pretoria in Nov. T4 (Munro) ; only one $ is known to me. 
Cerura Swierstrae. 
Cerura swierstrae Dist. Entom. xxxv. p. 213 (1902). 
Two d s and one $ in my collection from Johannesburg (Sept. ’04, Cooke); 
Pretoria (Sept. '08, Munro); Umkomaas, Natal, Jan. ’14 (Janse). 
The three specimens are practically the same, but the Johannesburg 
specimen has more black in the inner margin of the fore wing. 
Genus PARARETHONA nov. 
(PI. I, figs. 11-16.) 
Type Desmeocraera hierax Dist. 
cJ, $. Proboscis rudimentary; palpi short, porrect, not reaching vertex, 
covered with long spreading hairs; first joint as long as second and third joint 
together; third joint almost half of second joint; eyes large, glabrous, rounded; 
frons with a tuft of long hairs; antennae about half of costa in length, bipec- 
tinated for fth their length, therL ciliated ; branches in $ about ten times shaft, 
ciliated on both sides, in $ about eight times shaft, in both sexes the branches 
are in shape as in Cerura and P sender ethona\ base of shaft globular and with 
a long tuft of hair in front; fore legs with a bluntly rounded straight process, 
nearly reaching till end of tibia; mid legs with two spurs; hind legs with four 
spurs of nearly equal length ; shape of spurs as in Cerura and Pseudorethona, 
only more pointed and more strongly serrate on inner side and the serrae in 
two rows; in all legs the femurs and tibiae are covered with long spreading 
hairs. Fore wing in $ rather narrow and triangular, costa nearly straight, apex 
slightly rounded, termen oblique, slightly rounded, tornus rounded, inner 
margin nearly straight; in $ the fore wing is broader, costa gently arched, 
termen less oblique ; 1 b with a fork of f rd ; vein 2 from fth lower median ; 3 from 
frd distance 2 to 4 ; 4 from lower angle ; discocellulars oblique, incurved between 
4 and 5 ; 5 from below lower angle ; 6 from towards end of areole (in three 
specimens it is from stalk 7, 8, 9; in one <$ specimen the areole is absent in 
left wing and present in the right wing, 6, 7, 8, 9, 10 are then stalked) ; 7 stalked 
with 8, 9 for fth of its length; 8 and 9 on a stalk of over half of vein 8, origi- 
nating from end of areole ; 10 from fth areole ; 1 1 from before f rd upper median ; 
12 parallel to costa. Hind wing triangular with the corners well rounded; costa 
well arched ; termen very oblique and well rounded ; inner margin well rounded ; 
1 a and 1 b slightly curved; 2 from frd lower median; 3 and 4 from lower angle; 
