62 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 126 
genitalia: eighth sternum with posterior margin bearing small mesal 
lobe, and a thin, projecting sclerite marked with a pair of crescentic 
dark marks; bursa copulatrix heavily sclerotized, streamlined, with 
an elongate central opening. 
LARVA, PUPA, cASE.— Unknown. 
MarteriaLt.—Holotype, male: Dominica, Pont Casse, .4 miles east, 27 April 
1964, O.S. Flint, Jr.. USNM Type 69904. Allotype, female: same data. Paratypes: 
same data, 11o’ 19; same, but 6 May 1964, 1c; same, but 28 June 1964, 20’; 
Pont Casse, 1.3 miles east, 10 May 1964, O. S. Flint, Jr., 1c; same, but 18 May 
1964, 1h 19; Pont Casse, 1.7 miles east, 24 Mar. 1965, W. W. Wirth, 10’; 
Pont Casse, 12-14 Oct. 1964, P. J. Spangler, 1o&; Freshwater Lake, 5-8 Nov. 
1966, A. B. Gurney, 19 ; Mannett Gutter, 7 Mar. 1965, W. W. Wirth, 1c. 
Brotogy.—Adults of this species have been taken primarily near 
small, clear brooks, in which the larvae will probably be found. 
Ochrotrichia (Metrichia) campana, new species 
FieureEs 172-174 
This and the following species are very closely related. In this 
species the dorsal lobe of the clasper is developed into a narrow 
spurlike process. 
Apvuut.—Length of forewing 2 mm. Color fuscus, antennae and 
legs paler. A pair of large pouchlike sacs, each filled with many 
modified setae, between sixth and seventh terga. Male genitalia: 
ninth sternum produced and rounded anteroventrally, with a heavily 
sclerotized dorsal lobe; a lightly sclerotized, elongate lobe dorsally 
extending posteriad between spinelike process arising from dorso- 
lateral angles of ninth sternum; clasper broad, with a strong dorso- 
lateral spur curving mesad, and a broad ventrolateral lobe; aedeagus 
with 2 subapical spines, a heavily sclerotized central tubule, and a 
slightly inflated basal half. 
LARVA, PUPA, CASE.—Unknown. 
Mareriau.—Holotype, male: Dominica, D’leau Gommier, 16 March 1965, 
W. W. Wirth, USNM Type 69905. 
Brotocy.—Nothing is known of the biology of the species. 
Ochrotrichia (M.) similis, new species 
Figures 175-177 
This species is extremely close to the preceding, differing primarily 
in the dorsal lobe of the clasper, which is broad in O. similis and 
narrow in O. campana. The pouches between terga six and seven also 
seem different in the two species. 
Apuit.—Length of forewing 2.56 mm. Color in alcohol brown. A 
pair of small pouches between sixth and seventh terga; seventh 
