58 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
expanded toward apex in lateral view, with two dark lateral points, 
in ventral view almost parallel sided; aedeagus with a flattened, 
heavily sclerotized, apical portion, giving rise subbasally to a mem- 
branous process, twisted process wrapped around apical section 14% 
times, shorter than apical section. Female genitalia: eighth sternum 
elongate apically, dorsal margin deeply and rectangularly emarginate, 
midventral mark goblet shaped, with a long stem; bursa copulatrix 
with lyre-shaped apicolateral arms, a starlike central complex and 
a short basal stem. 
LARVA, PUPA, CASE.— Unknown. 
MarteriaL.—Holotype, male: Dominica, Pont Casse, 1.6 miles west, 27 June 
1964, O. S. Flint, Jr.,. USNM type 69901. Allotype, female: Clarke Hall, 11-20 
Feb. 1965, W. W. Wirth. Paratypes: same data as allotype, 19 ; same, but 21-31 
March 1965, 1? ; same, but 11-20 May 1964, O. S. Flint, Jr., 19; same, but 
15-30 June 1964, 19; Fond Figues, 7 May 1964, O. S. Flint, Jr., 19. Other: 
St. Lucia, Vergallier River, near Marquis, 31 July 1963, Flint and Cadet, 19. 
Brotogy.—The adults have been taken at light primarily in the 
lowlands, but the holotype was taken near a slowly flowing, small 
highland stream. 
Hydroptila grenadensis, new species 
Figures 155-158 
This species is quite closely related to the preceding although there 
is considerable difference in the shape of the clasper, which is very 
narrow with an apicodorsal point. 
Aputt.—Length of forewing 2 mm. Color pale brown, forewing 
mottled with brown and white. Male genitalia: ninth segment rounded 
anteriorly, with a sharp spine from posterior margin laterad of clasper; 
tenth tergum sclerotized laterally, with dorsum divided mesally 
about a third of its length; clasper narrow, apex developed into a 
distinct dorsolateral point bearing a black spot; aedeagus flattened 
apically with a membranous process exiting from near its base, twisted 
process wrapped around stem 1% times, shorter than apical portion. 
Female genitalia: eighth segment with posteroventral margin evenly 
rounded, dorsal margin shallowly emarginate, trilobate, ventral 
surface with a goblet-shaped mark; bursa copulatrix identical to that 
of preceding. 
LARVA, PUPA, CASE.— Unknown. 
Marterrau.—Holotype, male: Grenada, 2 miles west of Grand Etang, 4-8 Aug. 
1963, O. S. Flint, Jr., USNM Type 69902. Allotype, female: same data. Para- 
types: same data, 3067 4? ; Bathazar, 7 Aug. 1964, O. S. Flint, Jr., 159. 
Brotocy.—The adults have been taken near both a large, rapid 
lowland river and a small, tumbling mountain brook. 
