is PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 125 
islands, and the only other record that has been found is for Lep- 
tonema albovirens (Walker) from St. Vincent (Mosely, 1933). Including 
these two old records with the results of the present study, we now 
know 3 species from Guadeloupe, 36 from Dominica, 11 from 
St. Lucia, 1 from St. Vincent, and 12 from Grenada. These numbers may 
be compared with those reported for the Greater Antilles (Flint, 
1968a): 24 on Cuba, 18 on Hispaniola, 39 on Jamaica, and 35 on 
Puerto Rico. 
ACKNOWLEDGMENTS.—The accumulation of the vast majority of 
the material on which this paper is based was made possible by the 
support of J. Bruce Bredin and John D. Archbold to whom I am most 
indebted. ‘he following people all made collections, including some 
Trichoptera, on the island of Dominica during the course of the 
Bredin-Archbold-Smithsonian survey: D. F. Bray, H. H. Hobbs, 
H. Robinson, O. S. Flint, T. J. Spilman, P. J. Spangler, W. W. Wirth, 
J. F. Gates Clarke, D. M. Anderson, D. R. Davis, R. J. Gagne, 
A. B. Gurney, and E. I. Todd. 
My trip to Dominica, St. Lucia, and Grenada in 1963, which resulted 
in the only material available from the latter two islands, was made 
possible by grant J-481 from the American Philosophical Society. I 
wish to acknowledge the help received on St. Lucia from Jason Cadet 
in the field and from Harold F. C. Simmons in making the necessary 
arrangements. 
I am indebted to André D. Pizzini for the figures of the cases and 
habitus drawings of the larvae. 
DistriputTion.—One of the problems frequently faced by insect 
zoogeographers is the one caused by lack of adequate collecting. 
This results in species with enigmatic relationships because the related 
species have not been collected or in misleading distribution because 
the range is only partially known. Enough has become known, how- 
ever, about the Caribbean Trichoptera in recent years so that certain 
general patterns can be discerned. In the following paragraphs I will 
attempt to point out what these patterns seem to be for the Trichop- 
tera, with the clear understanding that additional collecting will 
undoubtedly require changes in certain particulars. 
The majority of the Trichoptera found on the Antilles appear to be 
limited to these islands and, in fact, endemic to a specific island. Of 
the total of 45 species that are found on the Lesser Antilles, only 6 are 
known from the mainland as well; an additional 13 species are also 
found on two or more Antillean islands, leaving 26 which are known 
from only one Lesser Antillean island. 
There seem to be three basic patterns of distribution evident in 
the Lesser Antillean Trichoptera. The first (map 1) is shown by 
Oxyethira janella Denning, O. tega Flint, O. cirrifera Flint, Neotrichia 
