REPORT ON THE TANIDACEA AND 



ISOPODA 



Collected by the Barbados-Antigua Expedition 

 from the University of Iowa in 1918 



Pearl L. Boone 



Aid, Division of Marine Invertebrates, U. S. National Museum 



The Isopod Crustacea of the Barbados-Antigua Expedition 

 conducted by the State University of Iowa during the summer 

 of 1918, though a small collection, has proven quite interesting. 

 Of the six species represented, one, Exosphaeroma nuttlngi, is 

 new to science ; another, Porcellio parvicornis Richardson, repre- 

 sents the second record of this species, which was described from 

 a single specimen secured in the Bermudas in 1901. 



A single representative of the Tanaidacea was taken ; namely, 

 Apsuedes espinosus IMoore. 



An annotated list of the material collected and discussion of 

 the new species is herewith presented. The drawing of the latter 

 was made by Mr. Seward H. Rathbun under my direction. 



TANAIDACEA 



Family Apseudidae 



Genus Apseudes Leach 



Apseudes espinosus Moore 



Apseudes espinosus Moore, Bull. U. S. Fish Commission XX, 



pt. 2, 1902, pp. 165-166, pi. 7, figs. 1-6. Richardson, Bull. 54, 



U. S. Nat. Mus., 1905, p. 38, figs. 34 a-f. 



One male specimen of this species was collected at Station 1, 

 Barbados, 1918, and is in the collection of the State University 

 of Iowa. 



]\Ioore described the type from a female, taken by the U. S. 

 Bureau of Fisheries steamer "Fish Hawk", at Station 6079, off 

 St. Thomas, Porto Rico, 20 fathoms, on coral bottom. 



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