DESCRIPTION OF A NEW ISOPOD OF THE GENUS 

 EURYCOPE FROM MARTHAS VINEYARD. 



By Harriet Richardson, 

 Collaborator, Division of Marine Invertebrates, U. 8. National Museum. 



Two specimens of a new species of Eurycope were obtained by 

 the U. S. Bureau of Fisheries steamer Albatross 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, pi. x, Dublin. 



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 antenna?. 

 On either side of the median process there is a 

 slight double emargination. The eyes are want- 

 ing. The first pair of antennae 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 fiagellum extends to the end of the 

 fourth article of the peduncle of the second an- 

 tenna?, and is composed of about seven articles. 

 The second antenna? have the basal article short 

 and furnished with a long, conspicuous spine on the outer margin. 



Fig. 1.— Eurycope 



TRUNCATA Xl4£. 



Proceedings U. S. National Museum, Vol. XXXIV— No. 1598. 



