io8 



DISCOVERY REPORTS 



as long as the trunk ; the palp, moreover, has nine instead of eight segments ; the spines 

 on the ventral margin of the propodus are much smaller and the claw is much shorter. 

 The specimen described as Amtnothea, sp. ? (WS 216) is nearly related to this species ; 

 but one palp is undergoing regeneration distally and the other does not appear to be 

 quite normal as regards the terminal segments (Fig. 58 b). The differences between the 

 two forms are given in the key. 



Ammothea, sp..? (Fig. 58). 



St. WS 216. I. vi. 28. 47° 37' S, 60° 50' W, 219-133 m.; f. S. Commercial otter trawl: i ?. 



The single female specimen bears a strong superficial resemblance to the holotype of 

 Ajnmothea longispina but is of much smaller size. The proboscis is of the same type, 

 although it is not quite as long as the trunk. The right palp has nine segments ^ and the 

 fourth is distinctly longer than the second segment. Unfortunately the left palp has 

 been damaged and the tip is undergoing regeneration; the sixth segment is about to 

 bifurcate and a seventh segment is present on the inner antero-lateral angle. There are 



Fig. 58. Ammothea, s^.} St. WS 216: «. Oviger: X15. 6. Right 

 palp: X15. f. Terminal segments of third leg: xii. 



no prominent rounded lobes on the anterior margin of the cephalon and the anterior 

 spine on the propodus is much shorter than in A. longispina (Fig. 58 c, cf. Fig. 50 b). 

 The oviger is represented in Fig. 58 a. 



The specimen appears to be mature, for the genital apertures are large and con- 

 spicuous. If the palp is normally nine-jointed this species would not be the same as 

 A. stylirostris. According to Bouvier's key it is nearest to A. glacialis (Hodgson), but 

 the proboscis is strikingly different in the two forms. 



1 The terminal segments of this palp also may have been regenerated (see Fig. 58 b). 



