GAMMARIDEAN AMPHIPODA 



47 



Figure 18. — Acidostoma obesum ortum, new subspecies, juvenile, 2.8 mm, 7231: a,h, gnath- 

 opod 1; c,d, gnathopod 2, offset of d Is dactyl; e-i, pereopods 1,2,3,4,5. 



Atnbasiopsis K. 11. Barnard 



Ambastopsis ( ?) fomes, new species 



Figures 19, 20 



Diagnosis.— Lateral cephalic lobes strongly projectinc:, moderately 

 broad, asymmetrical, acute ; eyes absent ; antennae very short, antenna 

 2 not exceeding antenna 1 in length ; prebuccal complex small, upper 



