50 "TERRA NOVA" EXPEDITION. 



Ammothea glacialis (Hodgsou). 



Leionymplion glaciale, Hodgson, 1907, p. 50, PI. vii, fig. 3. 

 Ammothea glacialis, Bouvier, 1913, p. 123. 



Occurrence. — Station 194, off" Oates Land, 180-200 fathoms ; 1 young. Station 

 220, off" Cape Adare, 45-50 fathoms; 1 immature. Station 314, McMurdo Sound, 

 222-241 fathoms; 5 immature. Station 318, McMurdo Sound, 130-180 metres; 1 

 young. Station 322, McMurdo Sound, 20 metres ; 1 $. Station 338', Entrance to 

 McMurdo Sound, 207 fathoms ; 2 $, 2 c?* (ovig.), 3 immature. Station 340, off Granite 

 Harbour, 160 fathoms; 2 $, 1 ^ (ovig.), 2 immature, 1 young. Station 355, McMurdo 

 Sound, 300 fathoms ; 1 $ (ovig.), 3 immature. Station 356, off Granite Harbour, 50 

 fathoms ; 1 young. 



Bemarhs. — This species has hitherto been known only by the immature holotype 

 obtained by the " Discovery " and an adult female recently recorded by Hodgson from 

 the " Gauss " collection. It is the most abundant species of the genus in the collections 

 of the " Terra Nova." 



Adult specimens are little larger than the holotype, with which they agree except 

 as regards the chelophores and, in the males, the ovigers. The form of the proboscis is 

 better indicated by Hodgson's description than by his figure. The ovigers of the male 

 have the distal segments modified as in other species of the genus ; the terminal 

 segment is little longer than the preceding. 



Measurements, in mm., of adults from Station 338. — 



(Stations 194, 318, 340 and 356) are only referred to this species with some doubt. 

 Their most conspicuous character is the presence on the legs of coarse short spines set 

 in longitudinal rows ; in the smaller specimens each spine is elevated on a conical 



