1921 ] Schmitt: The Marine Decapod Crustacea of California 173 



Family Hippidae 



First pair of legs simple; second to fourth legs with last joint curved and 

 flattened. Carapace subcylindrical, with wings which cover the legs. Third max- 

 illipeds broad, without exopodites. Abdomen bent under thorax; tail-fan not 

 adapted for swimming. 



Genus Emerita Gronovins, Benedict 



Antennae with flagellum very long, robust, multiarticulate, and strongly 

 ciliated, normally hidden, coiled beneath the external mouth parts. Third pair 

 of maxillipeds with ischium very small, and merus very large; terminal joint 

 narrow and compressed. Dactyls of first pair of legs oval and lamellate. 



Emerita analoga (Stimpson) 



Plate 31, figure 5 



Hippa analoga Stimpson, Proc. Boston Soe. Nat. Hist., 6, 85, 1857; Miers, 

 Jour. Linn. Soc. London (Zool.), 14, 324, pi. 5, fig. 10, 1879; Ortmann, 

 Zool. Jahrb., Abt. f. Syst., 6, 537, pi. 26, fig. 1, 1892; Holmes, Oceas. 

 Papers Calif. Acad. Sci., 7, 103, 1900. 



Emerita analoga Eathbun, H. A. E., 10, 168, 1904; Weymouth and Eicharu- 

 son, Smithson. Misc. Coll., 59, no. 7, 1912; Mead, Univ. Calif. Publ. 

 Zool., 16, 431, 1917. 



Fig. 110. Emerita analoga, dorsal view, natural size. 



Characters. — Carapace oblong-oval, very convex, and marked with irregular 

 transverse, crenulated lines, which become much less marked toward the sides 

 and the posterior end; median projection of front subtriangular but rounded at 

 the tip; lateral lobes triangular and acute, projecting further forward than median 

 lobe, from which they are separated by round, smooth sinuses. Eye-stalks long and 

 very slender. Merus of maxillipeds with lobe at antero-internal angle rounded. 

 Telson narrowly triangular, acute ; outer surface convex, smooth, and glossy. 



