AMMOTHEIDAE 



103 



Remarks. Each palp seems to be quite perfect and there is no distinct evidence of 

 fusion of any two segments. This species is much larger than A. tetrapora and is 

 characterized by (i) the long, tapering proboscis, (2) the relatively short palp (in 

 A. tetrapora the palp is longer than the proboscis), (3) the ver}' large spine on the 

 propodus, and (4) the blunt antero-lateral cephaHc lobes. 



Ammothea spinosa (Hodgson) (Fig. 53). 



Leionymphon spinosum, Hodgson, 1907, p. 49, pi. vii, fig. 2. 

 Ammothea spinosa, Bouvier, 1913, p. 123 (in key). 

 Ammothea spinosa, Caiman, 191 5, p. 52. 



St. WS215. 31.V. 28. 47° 37' S, 60° 50' W, 219-14601.; f.gn. S. Commercial otter trawl : I (J. 

 St. WS 245. 18. vii. 28. 52° 36' S, 63° 40' W, 304-290 m. ; d. gn. S. Sh. Commercial otter trawl : 

 I ovigerous S- 



Remarks. There can be no doubt that these tvv^o specimens belong to A. spinosa 

 although they are more compactly built, with much smaller non-recurved "tubercular 

 processes" on each lateral process, than 

 in the holotype. Also the fine, silky hairs 

 on body and legs are very sparse. 



One of the most outstanding charac- 

 teristics of the species, namely the varia- 

 tion in the terminal segments of the 

 walking legs, has not been adequately 

 described by Hodgson (1907, p. 50). In 

 all specimens examined the two anterior 

 pairs of legs each have the propodus rela- 

 tively short and stout, with numerous 

 spines on the ventral margin arranged in 

 the manner represented in Fig. 53 a. The 

 propodus of the third or fourth leg, on 

 the other hand, is relatively slender with 

 6-7 small spines on the proximal half of 

 the ventral margin and none on the distal 



Fig. 53. Ammotliea spinosa (Hodgson). Holotype: 

 terminal segments of a, first leg; b, fourth leg: X15. 



half (Fig. 53 b). The first tibia is longer than the second. In these two respects A. spinosa 

 differs from all the other Antarctic species of the genus. 

 Distribution. Ross Sea and Magellan District. 



Ammothea minor (Hodgson). 



Leionymphon minus, Hodgson, 1907, p. 44, pi. vi, fig. 2. 

 Ammothea minor, Bouvier, 1913, pp. 123, 131, figs. 83, 84. 

 Ammothea gracilipes, Bouvier, 1913, p. i32> figs- 85-87. 

 Ammothea minor. Caiman, 191 5, p. 52. 

 Ammothea {Leonymphon) minor, Loman, 1923, p. 23. 



