“TERRA NOVA” EXPEDITION. 
“beyond all doubt.” The matter cannot, perhaps, be settled without a renewed appeal 
to the type-specimens, but the evidence available indicates that the “ Discovery” and 
“Terra Nova” specimens should lie referred to A. gihbom, and that Leionymphon 
grande, Hodgson 1907, should be removed from the synonymy which I recently 
(1915c, p. 314) gave for A. carolinensis, Leach. 
Measurements, in mm .— The following measurements are taken from adult females 
Ammothea gibbosa. Ammotliea grandis. 
“ Discovery.” South Georgia. 
Length of proboscis. 
,, trunk 
,, abdomen. 
Third right leg- 
O o 
Coxae 
Femur 
First tibia . 
Second tibia 
Tarsus and propodus 
Main claw . 
Auxiliaries 
15-5 
13 
1 1 
10 
3'5 
3 
12-5 
10 
14-5 
11 
13 
10 
17 
12 
5 
5 
2 
2 
1-28 
1 
Ammothea spinosa (Hodgson). 
Leionymphon spinosum, Hodgson, 1907, p. 49, PI. vii, fig. 2. 
Ammothea spinosa, Bouvier, 1913, p. 123. 
Occurrence .—Station 338, Entrance to McMurdo Sound, 207 fathoms; 1$, 1 $• 
Remarks .— This well-marked species was described by Hodgson from a single 
female specimen, with which the two now examined agree closely, the male differing 
oidy in the structure of the ovigers. 
Ammothea minor (Hodgson). 
Leionymphon minus, Hodgson, 1907, p. 44, PL vi, fig. 2. 
Ammothea minor, Bouvier, 1913, p. 131, figs. 83, 84. 
Ammothea graciUpes, Bouvier, 1913, p. 132, figs. 85-87. 
Occurrence. —Station 220, off Cape Adare, 45-50 fathoms; 1 $, 1 immature. 
Station 340, off Granite Harbour, I GO fathoms ; 1 $. Station ?, 1 $, 3 immature. 
Remarks. —The specimens obtained by the “ Terra Nova” unquestionably belong 
to the same species as the types of the “ Discovery ” collection, and, like them, agree 
rather better with Bouvier’s account of the species he describes as A. graciUpes than 
with the immature specimen that he identifies with Hodgson’s species. In the larger 
specimens the abdomen is much elevated, the legs, if not quite so slender as in 
Bouvier’s figure of graciUpes, much more so than in that of minor, and the second coxa 
equal in length to the sum of the other two. In the smaller specimens the proportions 
