8 IT.S. NATIONAL MUSEUM BULLETIN 23 6 



Figure 1. — Centropages orsinii Giesbrecht, loc. 194-E-5, ad. cf : a, Sth legs. Acartia tonsa 

 Dana, loc. 194— E-5, ad. ?: b, leg 5 and abdomen, lateral view from right side; loc. 592, 

 ad. cf : c, Sth legs. Cydopina steueri Friichtl, loc. 592, ad. $: d, leg 3; e, 3rd segment 

 exopodite leg 4;/, leg 5. {a, b, X 275; c-f, X 460.) 



Family Pseudocyclopidae Giesbrecht, 1893 



In its present form the family Pseudocj^lopidae comprises only the 

 genus Pseudocyclops Brady, 1872. The genera Bidgewayia Thompson 

 and A. Scott, 1903, Lampoidopiis Esterly, 1911, and Suezia Gurney, 



