DESCRIPTION OF A NEW ISOPOD OF THE GENUS 
EURYCOPE FROM MARTHAS VINEYARD. 
By Harrier RrcHarpson, 
Collaborator, Division of Marine Invertebrates, U. S. National Museum. 
Two specimens of a new species of Hurycope were obtained by 
the U. S. Bureau of Fisheries steamer A/batross in 1884 off Marthas 
Vineyard, as well as one from Georges Bank. These specimens have 
been in the Peabody Museum at New Haven, Connecticut, but have 
recently been transferred to the U. S. National Museum collection. 
References to the literature may be found on pages 701-717 of 
my Monograph on the Isopods of North America, Bulletin 54, U.S. 
National Museum, with the exception of the following, which has 
been published recently : 
The Marine Fauna of the coast of Ireland, Pt. 5, Isopoda, by 
W. M. Tattersall. Fisheries, Ireland, Sci. Investigations, 1904, II, 
1905, pp. 72-75, pl. x, Dubhn. 
The description of the form follows: 
EURYCOPE TRUNCATA, new species. 
Body oblong-ovate, a little more than twice as 
long as wide. Dorsal surface smooth. 
The head is wider than long, and is produced an- 
teriorly in a truncate process which extends be- 
tween the basal articles of the first pair of antenne. 
On either side of the median process there is a 
slight double emargination. The eyes are want- 
ing. The first pair of antenne have the basal arti- 
cle large and dilated. There is a large and con- 
Spicuous spine on the inner margin. The second 
and third articles are small and feeble, and of equal 
length. The flagellum extends to the end of the 
fourth article of the peduncle of the second an- 
tenne, and is composed of about seven articles. 
Fig. 1.—EURYCOPE 
The second antenne have the basal article short TRUNCATA X 143, 
and furnished with a long, conspicuous spine on the outer margin. 
PROCEEDINGS U. S. NATIONAL Museum, VOL. XXXIV—No. 1598. 
