NO. 5 BARNARD: AMPHIPODA 83 



Photis lacia J. L. Barnard 



Photis lacia J. L. Barnard 1962a: 42-44, fig. 18. 

 Canyon material: 6499(31). 



Photis macrotica J. L. Barnard 



Photis macrotica J. L. Barnard 1962a: 44, fig. 19. 

 C««j;onma/mW; 6805(9), 6806(13), 7043(4). 



Photis spp. 



Canyon material: Unidentifiable juveniles and females: 4851(1), 

 4852(3), 5960(2), 6499(4), 6803(146), 6804(91), 6806(12), 6817 

 (9), 6835(1), 6836(2), 6900(1), 7038(2). 



Protomedeia articulata J. L. Barnard 



Protomedeia articulata J. L. Barnard 1962a: 48-50, fig. 21. 



Canyon material: 5114(1), 6490 (20, blind), 6494 (111, blind), 



6845(2), 7044(2). 



Protomedeia (?)prudens new species 



(Fig. 36) ^ ■ 



Lacking antennae, this species cannot be assigned definitely to a 

 genus, for it might fit Podoceropsis, Kermystheus, Megamphopus, Bon- 

 nierella, Goesia, Eurystheus or Protomedeia. 



Diagnosis: Coxa 1 angular in front but not acutely produced; coxa 

 2 scarcely larger than coxa 1 and bearing a medially projecting, hook- 

 like accessory tooth ; both pairs of gnathopods with greatly elongated 

 fifth articles, article 6 of gnathopod 1 slender, bearing a projection in 

 place of palm, posterior edge of article 6 setose and bearing stout spine 

 just proximal to distal tooth ; article 6 of gnathopod 2 much stouter 

 than in gnathopod 1, palm transverse or essentially chelate, bearing two 

 teeth, a short subacute middle tooth and a cheliform palm defining- 

 tooth, posterior edge of article 6 with 2 large notches, dactyl long, over- 

 lapping palm considerably ; inner ramus of uropod 3 about three-fourths 

 as long as outer ramus; mouthparts like those of Prototnedeia fasciata 

 Kr(/)yer as figured by Sars ( 1 895 : pi. 1 96 ) . 



Holotype: AHF No. 6017, male, 7.4 mm. Unique. 



Type locality: Station 7038, La Jolla Canyon, 32°-52'-48"N, 

 117°-16'-32"W, 121 m. May 6, 1960. 



Relationship: This species is unusual in Protomedeia for the elonga- 

 tion of article 5 of gnathopod 1, its produced palmar tooth, and the pos- 

 terior notches on gnathopod 2 ; the medial coxal tooth of gnathopod 2 

 also is unique. No species of Megamphopus Norman has the kind of 

 gnathopod 2 seen in this species. 



