50 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
Larva.—Length to 2 mm. Nearly cylindrical in outline. Sclerites 
pale yellowish. Head with a spinelike process behind eyes. Apical 
abdominal segments with many long, dark setae; anal prolegs elongate. 
Casr.—Nearly cylindrical, posterior slightly flattened and tapered. 
Made of very small sand grains. 
Materiau.—Dominica, Clarke Hall, 11-20 Jan. 1965, W. W. Wirth, 107; 
same, but 21-29 April 1964, O. S. Flint, Jr., 1c? 19; Pont Casse, .4 miles east, 
25 June 1964, O. S. Flint, Jr., 1 pupa; Pont Casse, 1.6 miles west, 24 April 1964, 
O. 8. Flint, Jr., 2 cases. St. Lucia, Vergallier River, near Marquis, 31 July 1963, 
Flint and Cadet, 6c 39, 3 larvae, 2 pupae. 
Brotocy.—The immature stages are found on rocks in the more 
slowly flowing sections of both the larger and small rivers. 
Neotrichia corniculans, new species 
Fiaures 124-129 
This species appears to be related to the group of species named 
Dolotrichia by Mosely. From all known species it is easily recognized 
by the hornlike shape of the tenth tergite and the shape of the claspers. 
Aputt.—Length of forewing 1.5 mm. Color silvery gray. Male 
genitalia: ninth segment rounded anteriorly, posterior margin devel- 
oped into a thin lateral shelf that bears two pointed processes, dorsal 
one longest; tenth tergum developed as a pair of curving hornlike 
processes directed first laterad then posteriad; subgenital plate long, 
attenuate, and angled sharply ventrad; clasper elongate, slightly 
narrowed apically; aedeagus with apical half divided into two proc- 
esses, longer one twisted apically and with a bifid tip, a whiplike 
process arising at midlength. Female genitalia: eighth sternum with 
a dark lateral mark and a small raised central structure shaped like 
an arrowhead; bursa copulatrix elongate with a basal opening and 
two pairs of lateral pouchlike invaginations. 
LARVA, PUPA, AND CASE.— Unknown. 
MartertaLu.—Holotype, male: Dominica, D’leau Gommier, 16 March 1965, 
W.W. Wirth, USNM Type 69899. Allotype, female: same data. Paratypes: same 
data, 19 ; same, but 15 Feb. 1965, 307 3 9 ; Pont Casse, 1.0 mile east, 29 Jan. 1965, 
W.W. Wirth, 19. 
Brotocy.—Little is known of the biology of this species. The 
adults have been taken only at higher elevations on the island. 
Bredinia, new genus 
Three ocelli. Spurs 0, 2, 4. Mesoscutellum divided by a transverse 
suture, with a broad sclerite along posterior margin. Metascutellum 
