32 HETEROCERA. 
6 and 7 closely approximate ; 3 and 4 connate; 5 radial, parallel, midway between 4 and 6. Abdomen 
smooth. Legs smooth; hind tibiae slightly hairy above. 
Closely allied to Anacampsis Crt., from which it appears to be derived, but differing 
in the caudate cilia of the forewings, and in the short terminal joint of the palpi. 
1. Perioristica chalcopera, sp. n. (Tab. I. fig. 28.) 
Antennae bronzy brownish grey. Palpi white at the base and on the inner sides, thence stained witb steely 
grey. Head and Thorax brownish grey, with a slight cupreous tinge; face white. Forewings bronzy 
brown, overlaid on the basal half with a greenish grey iridescent sheen, the outer edge of which 
is obliquely terminated a little before the middle of the costa, and throws out a short white streak along 
the cell; above this is a slender, oblique, detached white streaklet, and an outwardly oblique white 
costal streak, more or less connected by scattered whitish scales at its apex with the apex of the median 
streak, and again to the apex of a similar streak a little above the dorsum ; at four-fifths is a second, 
short, straight white costal streak, loosely connected by scattered scales, at its apex, with a striated 
patch above the tornus, in which they form the upper of a series of three short longitudinal white 
streaks, bounded before and behind by a whitish line; on the costa at the apex are two converging 
wedge-shaped white streaks, divided by a dark brown line, which is continued along the termen to the 
tornus ; the outer of these is wider than the inner, and forms the base of the caudate apical extension of 
the cilia which are bronzy brown beyond it, those on the termen below being bright rosy, iridescent, 
brassy metallic. Hvp. al. 10 mm. Hindwings and cilia brown, with iridescent, bluish, steely grey 
reflections. Abdomen cupreous. Legs dark bronzy brown, with white bands, those on the hind tibiae 
oblique. 
Type 3 (65751) Mus, Wlsm. (Godm-Salv. Ooll.). [PT. (65752) US. Nat. Mus.] 
Hab. Mexico: GuERRERO: Amula, 6000 ft., VIII. (H. H. Smith). Two specimens. 
Very similar to Anacampsis perinaeta Wl1sm., which also occurs at Amula, in August: 
the caudate cilia and the much shorter terminal joint of the palpi will at once separate 
chalcopera. 
DIASTALTICA, gen. n. 
(Siacradruy=serving to distinguish.) 
Type: Diastaltica separabilis Wlsm. (Tab. I. fig. 29.) 
4A $0 9 4 



J. H. Durrant, del. 
ll. Diastaltica separabihes Wism. ¢. 
