294 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 18 



Key to the Genus Phoxocephalus 



1. Peraeopod 3, article 2 very slender coxalis 



1. Peraeopod 3, article 2 broad 2 



2. Eyes absent or structurally deficient 3 



2. Eyes usually well developed and bearing ommatidea 4 



3. Gnathopods 1-2, article 6 longer than broad, 



peraeopod 4 rather short holbolli 



3. Gnathopods 1-2, article 6 as broad as long, 



peraeopod 4 quite long tenuipes 



4. Gnathopod 2, article 6 as broad as long bassi 



4. Gnathopod 2, article 6 longer than broad 5 



5. Uropod 1, rami equal in length regium 



5. Uropod 1, rami unequal in length 6 



6. Uropod 2 with one stout peduncular spine, rami bare.. ..kergueleni 

 6. Uropod 2, peduncle and outer ramus with 



several slender spines homilis n.sp. 



Phoxocephalus coxalis K. H. Barnard 



Phoxocephalus coxalis K. H. Barnard 1932: 97-99, fig. 48. 



Diagnosis. — Eyes well developed and bearing lenses; gnathopod 2, 

 article 6 longer than broad; peraeopod 3, article 2 very slender; epimera 

 cf pleon segment 3 convex and smooth behind; rami of uropod 1 equal 

 in length; posterior lobe of article 2 of peraeopod 5 narrowing distally. 



Remarks. — This species is unique for the slender second article of 

 the third peraeopod, similar to harpiniid-type phoxocephalids. 



Distribution. — Near South Georgia, 53° 42' S, 37° 12' W, pelagic, 

 0-5 m. 



Phoxocephalus holbolli (Kioyer) 



(Plates 47, 48) 



Phoxus Holbolli Kroyer 1842: 151-152; Kroyer 1845: 551-563; Bate 

 1857: 140; Bate 1862: 98, pi. 16, fig. 2; Goes 1866: 528; Norman 

 1869: 278 (in part); Boeck 1876: 214, pi. 7, fig. 5; Jarzynsky 

 1 885 : 1 68 ;Sars 1886: 44-45. 



Phoxus Holbollii, Boeck 1871 : 134-135. 



Phoxus Holbolli, Hansen 1888: 85; Schneider 1891: 103-104; Meinert 

 1893: 159. 



t Phoxus holbolli, Robertson 1888: 28. 



