1865.] MR. A. G. BUTLER ON NEW EXOTIC LEPIDOPTERA. 4955 
acute front edge; the rings of shields in front of the sternal disk 
formed of unequal but symmetrical polygonal shields. 
DALOPHIA WELWITSCHII. 
Monotrophis capensis, Giinther, MS. B.M. (not A. Smith). 
Pale brown. 
Hab. Angola; Pungo Andongo (Welwitsch). B.M. 
4. Description oF Six New Species or Exotic BurrERFLIES 
IN THE COLLECTION OF THE British Museum. By A. G. 
Butter, Brirish Museum. 
(Plate XXVI.) 
1. Pieris pacroxicus. (Pl. XXVI. fig. 1.)- 
Upperside. Front wings, basal half white ; apical half, inner por- 
tion of anterior margin, and base grey; exterior edge of front mar- 
gin and outer margin rich brown; nervures, except the base of the 
_third median nervule and nearly the whole of the submedian ner- 
vure, brown. Posterior wings white, with broad bicoloured outer 
margin; the anal half grey; the apical half rich brown, forming 
sinuations with the nervules, which are also brown for nearly their 
entire length. Body silver-grey. 
Underside. Front wings white, yellow at the base and apex ; an- 
terior margin greyish ; all the nervures, except the interior portions 
of the third median nervule and the submedian nervure, deeply bor- 
dered with rich brown, the brown margins of the nervules gradually 
widening at the extremities into a marginal band; a brown spot 
crossing in the centre between the first and second discocellular, 
and another between the first and second median nervules. Poste- 
rior wings bright yellow, greyish on the outer margin; all the ner- 
vures deeply bordered with rich brown, except at the end of the cell, 
which gives it the appearance of being open; lower portion of folds 
between the median nervules and submedian nervure brown, and 
terminated inwardly by brown lunules, their concavities towards the 
base. Body dark grey. 
Hab. Begetea. |b. 
2. Pimris CRUENTATA. (Pl. XXVI. fig. 2.) 
Upperside. Front wings white, with faint roseate reflection ; apical 
‘edge rich brown, tapering nearly to the anal angle, and enclosing 
two small hastate, longitudinal, cream-coloured spots, and two barely 
perceptible dots of the same colour on either side of them; anterior 
margin brown, sprinkled with white scales near the base. Posterior 
wings white, with faint roseate reflection ; base sprinkled with a few 
black scales; outer margin rich brown ; anal portion faintly showing 
the markings of the underside.. Body—prothorax and mesothorax 
olivaceous ; metathorax and upper half of abdomen blue grey ; anal 
portion white. 
