58 
Psyche 
[March 
VARIETAL FORMS OF PERIPATUS IN HAITI. 
By Charles T. Brues 
Biological Laboratories, Harvard University 
During the past year Dr. P. J. Darlington of the Museum 
of Comparative Zoology spent some time in the Republic 
of Haiti where he obtained extensive collections of insects 
and other arthropods. Among this material are four lots 
of Onychophora taken at separated localities, including alto- 
gether 28 specimens. Previous to this there seem to have 
been discovered in Haiti only two specimens of Onycho- 
phora. These were contained in collections made by Dr. 
William M. Mann in 1912 and were dealt with by the writer 
in a previous paper. 1 
On account of striking differences in color and in the 
form of the integumentary papillae, I considered Mann’s 
specimens to represent two species, one of these I regarded 
as a subspecies of P. dominicae Pollard of which the typical 
form inhabits the Island of Dominica while two other va- 
rieties occur on Antigua and Porto Rico respectively. The 
other form was named P. manni after its discoverer. 
A close examination of the material obtained by Dr. Dar- 
lington discloses the fact that there are other forms of 
Peripatus in Haiti which appear to be clearly distinguish- 
able from one another and furthermore that these appear 
to occupy separated regions or different ecological situa- 
tions. I find also that he has rediscovered the two forms 
taken by Mann in the vicinity of the type locality near 
Furcy. 
In order to present more clearly the differential charac- 
ters of these several very similar forms, the following table 
has been constructed. It will be seen that the characters 
used are quite probably of different value, at least in our 
present state of knowledge. The form and arrangement of 
1 Preliminary Descriptions of two new Forms of Peripatus from 
Haiti. Bull. Mus. Comp. Zool., Harvard, vol. 54, pp. 519-521 (1913). 
