MARDSTE GAMMARIDEAN AMPHIPODA 



103 



Figure 52. — Podoceridae, pereopods probably never glandular: a, urosome, left lateral 

 aspect, showing elongated urosomite 1, typically depressed condition and frequent 

 amalgamation of urosomites 2 and 3 ( = 2) [see Isaeidae, Ischyroceridae, Aoridae, Coro- 

 phiidae, Cheluridae, Ampithoidae]; b, extremes of accessory flagellum; c, uropod 1; d,e,f, 

 variation in uropod 2; g, coxa 4, note unexcavate posterior edge; h,i, extreme variations 

 of uropod 3 ; /, telson. 



Colomastigidae and Eophliantidae have degraded mandibles. 



