MARINE AIMPHIPODA IN MICRONESIA — BARNARD 541 



Genus Paragrubia Chevreux 

 Paragrubia vorax Chevreux 



FiGUEB 33 



Paragrubia vorax Chevreux, 1901, pp. 427-431, figs. 50-55. — J. L. Barnard, 1955, 

 pp. 31-34, fig. 17 (with references). 



Material: Reish stations E-6 (3), E-20 (8), E-38 (1), E-43 (2), 

 E-55 (2), E-76 (1), E-83 (14), E-85 (1), E-93 (3), BE-107 (2), E-120 

 (2), E-136 (1). 



Remarks : Externally, the young of this species are difficult to sep- 

 arate from several species of the Aoridae. Of course, the principal 

 character of the Ampithoidae is the notched outer lobes of the lower 

 lip but this requires dissection of each specimen. The attached third 

 uropods are quite like those of some aorids. The outer ramus of the 

 thu-d m'opods in most Ampithoidae clearly bears one or two spine- 

 hooks but those of Paragrubia are nearly straight or scarcely hooked 



Figure 33. — Paragrubia vorax Chevreux, male, 9 mm., Relsh sta. E-20: a, lateral view; 

 b,c, gnathopods 1, 2; d, pereopod 5; e, uropod 3;/,g, outer ramus of uropod 3; juvenile 

 5.5 mm.: h,{, gnathopods 1, 2. 



