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U.S. NATIONAL MTJi&EiTJM BULLETIN 271 



When present the first maxillary palp is supposed to be 2-articulate 

 in Talitridae and 1 -articulate in the other two families, but the marine 

 Parallorchestes, obviously related to Hyalidae, has a 2-articulate 

 first maxillary palp, hence bridges the gap to the terrestrial 

 Talitridae. 



Figure 169. — Talitroidea: a, Najna sp. (J. L. Barnard, 1962c). Upper lip: b, Talitrus 

 saltator (Montagu) (Sars, 1895, pi. 9, as T. locusta). Mandible: c, Talitrus; d, Najna. 

 Lower lip: e, Talitrus. Maxilla 1:/, Parhyalella hatesoni Kunkel (1910); g, Hyale nilssoni 

 (Rathke) (Sars, 1895, pi. 11); h, Talitrus. Maxilla 2: i, Talitrus. Maxilliped: ;, Insula 

 antennulella Kunkel (1910); k, Parky ale hawaiensis (Dana) (Chevreux, 1901a, as Hyale 

 brevipes); I, Najna; m, Chiltonia mihiwaka (Chilton) (Hurley, 1954a); n, Talitrus. Uropod 

 3: 0, Parhyale (Shoemaker, 1956b); p, Chiltonia; q, Talitrus. Telson: r, Talitrus; s, 

 Hyale. 



