NO. 3665 CADDISFLIES—FLINT 47 
separated by a constriction, apical portion with several pairs of 
elongate internal spines. 
LARVA, PUPA, AND CASE.— Unknown. 
MarertaL.—Holotype, male: Dominica, Pont Casse, 2.2 miles east, 14 April 
1964, O. S. Flint, Jr.,. USNM Type 69898. 
Biotocy.—The only known specimen was taken at a black light 
at a small tumbling brook. 
Alisotrichia species 2 
FiaureE 85 
I am here describing the larvae of a species that is clearly related 
to Alisotrichia although they do possess a number of unique charac- 
teristics. The possession of numerous small intercalary sclerites on 
the thorax and abdomen, and the large, elongate-oval setae are very 
distinctive. 
It seems quite probable that these are the larvae of one of the last 
three species. 
Larva.—Length 3.5 mm. Sclerites brown. Slightly flattened, 
abdomen gradually tapering toward posterior. Structurally much like 
the larva of type-species, differing as follows. Thoracic notae and 
abdominal tergites bearing long, broad, pointed, black setae; pro- 
pleuron with 1, meso- and metapleura with 2 of these setae. Meso- 
and metanota anteriorly and abdominal terga posteriorly with a 
broad border of sclerotized spots. Small intercalary sclerites present 
between segments from the mesonotum to the eighth segment. 
Abdomen with 9 tergites; that of first segment barely different from 
those of segments beyond. 
MartertaL.—Dominica, R. Laurent, 21 July 1963, O. S. Flint, Jr., 1 larva. 
Geneva Estate, 9 Dec. 1964, P. J. Spangler, 1 larva. Fond Figues R., 9 Feb. 1965, 
W. W. Wirth, 1 larva. 
BioLtocy.—The larvae were collected from boulders in rocky 
sections of swiftly flowing lowland rivers. 
Genus Neotrichia Morton 
Neotrichia Morton, 1905, p. 72. [Type-species: Neotrichia collata Morton, 1905, 
by monotypy.] 
The genus contains numerous species, all of New World distribution. 
The species are all very small, generally being less than two milli- 
meters long. 
The larvae were described by Flint (1964b) and Ross (1944). They 
construct small, cylindrical cases made of very small sand grains. 
