NO. 5 BARNARD: AMPHIPODA 75 



Melphisana bola J. L. Barnard 



Melphisana bola J. L. Barnard 1962b: 81-83, fig. 7. 

 Canyon material: 7031 ( 1 ) . 



Family OEDICEROTIDAE 

 Bathymedon covilhani J. L. Barnard 



(Fig. 27) 

 Bathymedon covilhani ]. L. Barnard 1961b: 85, fig. 53. 



Canyon material: 6820 ( 1 ) , 6831 ( 1 ) . 



Basin material: 6344 ( 1 ) , 6810 ( 1 ) . 



Remarks: Although the epistome appears to be somewhat more pro- 

 duced than in the Panamanian t3^pe specimen, the gnathopods, telson, 

 head and pereopod 3 relate the present specimens to the original ma- 

 terial. The retention of antenna 1, missing in the type specimen, permits 

 its description: article 3 is as long as article 2 and longer than article 

 1. This discovery shows the relationship of B. covilhani to B. gorneri 

 Gurjanova (1951). The two species may prove to be either identical or 

 races of a single stem. Gurjanova's Bering Sea species should be ex- 

 amined for the condition of its epistome. In comparison to B. gorneri, 

 Bathymedon covilhani has more strongly notched distal ends of article 

 5 on the gnathopods, a less projecting mandibular molar, a more 

 slender first mandibular palp article, a shorter fourth article of the 

 maxillipedal palp, and a convexly projecting telsonic apex. 



Bathymedon kassites, new species 



(Fig. 28) 



Diagnosis: Eyes practically obsolete, formed of granular material in 

 the rostrum and dorsal cephalon, rostrum very small, anterior edge of 

 head below antennal corner nearly vertical ; articles 5 and 6 of gnatho- 

 pods subequal in length ; posterior lobes on fifth articles of gnathopods 

 strongly projecting, lobe on gnathopod 2 sharper, palms longer than 

 posterior margins of sixth articles ; peduncle of antenna 1 intermediate 

 in length between that of B. candidns and that of B. palpalis (see J. L. 

 Barnard 1961b), article 3 much shorter than article 1 ; coxa 1 produced 

 forward but not greatly; pereopods 3-4 with article 2 slender; pleonite 

 4 unarmed ; telson apically rounded, bearing two very stout spines. 



Holotype: AHF No. 5918, female, 3.2 mm. 



Type locality: Station 6494, Monterey Canyon, California, 36°- 

 46'-58" N, 121°-55'-56"W, 750 m, October 3, 1959. 



Canyon material: 6490 ( 1 ) , 6494 ( 7 ) . 



Relationship: This species resembles B. Candidas J. L. Barnard 



