68 



U.S. NIATIONATj museum bulletin 271 



Figure 17. — Thaumatelsonidae : a, mandible, note small, nontriturative molar; h, accessory 

 flagellum absent or vestigial; c, coxae 1-4, left to right [see Pagetinidae]; d, urosome, 

 left side (U = urosome, T = telson), note fusion of segments and thickened telson [see 

 Stenothoidae, Cressidae]; e, maxilliped, note smallness of outer plate;/, uropod 3, unira- 

 mous [see Amphilochidae]; g, telson. 



