MARESTE GAMMARIDEAN AMPHIPODA 



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Figure 4. — Stegocephalidae : a, head, left lateral aspect showing subconical grouping of 

 mouthparts, shortening of head, enlargement of epistomal region (epi); b, mandible, 

 note absence of palp and molar and weakly developed styliform shape [see Acantho- 

 notozomatidae]; c, accessory flagellum [see Acanthonotozomatidae]; d,e, variation in 

 telson;/, coxae 1-4, left to right, note slight acumination of anterior coxae [overall shape 

 not occurring in Lysianassidae]. 



