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U.S. NlATIONAIi MUSEUM BULLETIN 271 



Figure 25. — Atylidae: a, head [see Ampeliscidae]; b, extremes of accessory flagellum; 



c, urosome, left lateral view, showing amalgamation of urosomites 2-3; d, telson. 

 Lepechinellidae have acuminate coxae \-A. Shallow-water Ampeliscidae have cuticular 

 cephalic lenses. Dexaminidae, Prophliantidae, and Kuriidae lack a mandibular palp. 



