GAMMARIDEAN AMPHIPODA 



45 



apparently all have the outer plate of the maxilliped permanently 

 folded as the figures indicate. The writer has examined two other 

 species lacking- the preformed folding notch and the outer plates 

 nevertheless seem permanently folded; they are very difficult to 

 straighten or flatten. In terms of maxillipedal puter plate and third 



Figure 16. — Acidostoma ohesum ortum, new subspecies, holotype, female, 7.5 mm, 7231: 

 a, lateral aspect; b-e, uropods 1,2,3 (3 enlarged);/, maxilliped, outer plate folded; |;, head 

 (stippled portion=epistome); h, articles 6,7 of gnathopod 1, minus setae; i, mandible; 

 y, pereopod 5; k, telson; l,ni, maxillae 1,2; n,o, gnathopods 2,1; p, antenna 1, accessory 

 flagellum (broken); q, pereopod 2; r, antenna 2. 



