ACANTHONOTOZOMATIDAE 125 



incised. Mandible tapering to a smooth, narrowly rounded, scoop-like or spoon-like 

 apex, concave on inner surface, no secondary cutting-plate or spine-row, molar rudi- 

 mentary. Lower lip without inner lobes, outer lobes not apically incised. Maxilla i, 

 outer lobe obliquely truncate, with about 1 1 serrate spines and some setae, palp stout, 

 1st joint a little longer than broad, 2nd ovate, extending beyond apex of outer lobe. 

 Maxilliped, inner plate moderately broad, outer plate broad, apically somewhat pointed, 

 palp slender, 2nd joint not apically enlarged or produced, 4th joint a mere rudiment 

 with one long seta. 



Peraeopods 3-5, 2nd joints strongly expanded, lower hind corners produced in short 

 points, a shorter point at upper hind corner in peraeopods 3 and 4, lower and hind 

 margins serrate. 



Uropod 2, outer ramus two-thirds length of inner ramus. 



Remarks. Named after Amerigo Vespucci, the Florentine cosmographer, who was 

 probably the first to sight the Falkland Islands (Boyson, The Falkland Islands, Oxford, 

 1924, p. 15). 



Genus Echiniphimedia, Brnrd. 

 Barnard, 1930, p. 358. 



Echiniphimedia hodgsoni (Wlkr.). 



Walker, 1907, p. 30, pi. xi, fig. 8. 

 Barnard, 1930, p. 359, fig. 31. 

 Schellenberg, 1931, p. 123. 



Occurrence: 1. St. 140. South Georgia. 1 juv. 10 mm. 



2. St. 148. South Georgia. 1 $ 40 mm. 



3. St. 149. South Georgia. 2SS IJ an d 20 mm., 1 $ 12 mm. 



4. St. 158. South Georgia. 1 $ 18 mm. 



5. St. 170. South Shetlands. 1 $ 24 mm. 



6. St. 175. South Shetlands. 1 cj 13 mm. 



7. St. 190. Palmer Archipelago (90-130 m.). 1 $ 25 mm. 



8. St. MS 71. South Georgia. 1 $ 23 mm. 



Remarks. The ? from St. 170 and the S from St. 175 are conspicuous amongst all 

 the others by their distinctly longer and more slender spines, and thus are more like 

 Walker's figure than the other Discovery or Terra Nova specimens. But the arrange- 

 ment of the spines does not differ, and they can be regarded as casual variations. The 

 supra-ocular spine is absent in all the specimens except the c? from St. 190. 



The colour of the specimens from St. 149, 158 and 190 respectively is given as "pale 

 pinkish buff with pink eyes ", "creamy white with a close speckling of minute red spots 

 all over body and legs, eyes reddish brown", and "pale buff with pink eyes, tips of 

 mouth-parts dark yellow". 



On two occasions, St. 149, 190, it was noted that this species was probably commensal 

 with a sponge. The spiny armature may therefore be a case of mimicry, the length of 

 the spines depending on the species of sponge. 



Distribution. Coulman Island, 100 fathoms; McMurdo Sound and off Oates Land, 

 329-547 m. 



