326 



U.S. NATIONAL MUSEUM BULLETIN 271 



Figure 122.— Lysianassidae: a, Thoriella islandica Stephensen (1915), offset showing dorsal 

 urosome; h, Onesimoides chelatus Pirlot (J. L. Barnard, 1961); c, Crybelocyphocaris tattersalli 

 Shoemaker (1945a); d, Tryphosella sarsi Bonnier (Sars, 1895, pi. 27, as Tryphosa nana). 



