1936] 
West Indian Dryopidse 
65 
A LIST OF THE WEST INDIAN DRYOPIDAE (COLEOP- 
TERA), WITH A NEW GENUS AND EIGHT NEW 
SPECIES, INCLUDING ONE FROM COLOMBIA 
By P. J. Darlington, Jr. 
Museum of Comparative Zoology, Cambridge, Mass. 
Since 1927, when I published a paper on the West Indian 
“Helmidse” or Helminse ( Psyche 34, pp. 91-97), a consider- 
able amount of additional dryopid material has come to 
hand. Most of it has been collected by myself during a trip 
to Cuba, Jamaica, and Haiti which I was enabled to make 
from August to November, 1934, through grants from the 
Milton Fund and Atkins Foundation of Harvard University. 
This paper is to report upon this material and to bring our 
knowledge of the West Indian fauna up-to-date by listing the 
species, sometimes with critical comments. It does not pre- 
tend, however, to be a complete revision. 
By the “West Indies” I do not mean to include Trinidad, 
which is South American both geographically and faunisti- 
cally. Among the Dryopidse, the genera Dryops, Elsianus, 
and Heterelmis occur in Trinidad (collected by me in 1929) 
but are not, at least as yet, known from the West Indies 
proper, and one of the Trinidad species of Helmis (s. lat.) 
belongs to a group not yet known from the West Indies. 
In my 1927 paper I stressed the relationship of the West 
Indian species with those of Texas. Actually, of course, 
many of the species show close relationship with Central 
America as well as Texas, and there are some South Ameri- 
can elements in the Lesser Antilles. The West Indian fauna 
and that of the adjacent mainland are still so imperfectly 
known that there is not much point in discussing affinities in 
more detail, except to note that the West Indian fauna is 
certainly depauperate. 
The absence of Dryopidse in many rivers and brooks in 
the West Indies is a striking phenomenon, worth recording 
