112 



DISCOVERY REPORTS 



the separation of A. communis from A. hoekii. In the latter the palp is more serrated 

 distally and the antero-lateral processes on the cephalon are absent. 

 Distribution. South Georgia and South Shetlands. 



Achelia intermedia, Caiman (Fig. 6i). 

 Caiman, 1915, p. 60, fig. 15 A-C. 



St. 371. 14. iii. 30. I mile E of Montagu Island, South Sandwich Islands, 99-161 m. Large otter 

 trawl: 6 $$, i $, with A. briicei. 



? St. WS 27. 19. xii. 26. 53° 55' S, 38" 01' W, 107 m. i m. horizontal tow-net— net touched 

 bottom : i $. 



Remarks. The specimens from St. 371 agree in most respects with the Terra Nova 

 specimens of Achelia intermedia. The walking legs, however, are relatively longer and 

 more slender (see Fig. 61 a and b, and the ratios given below). 



Femur: length ~ maximum width 

 First tibia : length -I- maximum width 

 Second tibia: length ~ maximum width 



Terra Nova 



<? 9 



4-S 3-3 



5-0 475 



6-83 6-66 



Discovery 



(? S 



575 475 



6-25 7-0 



8-89 9-5 



Fig. 61. Achelia intermedia, Caiman: a. Third leg of female — Discovery 

 collection. 6. Same — Terra Nova collection. (Both x 13.) 



The specimen from WS 27 is rather different from all the others. The chelophore 

 is longer, exceeding the second palpal segment, but is not quite half of the proboscis^n 

 this respect the specimen approaches Achelia spicata, Hodgson (Caiman, 191 5, p. 57). 

 On the other hand the main claw is relatively shorter and only twice as long as the 

 auxiliaries — in this respect the specimen approaches Achelia brucei. The ocular tubercle, 

 however, is longer than wide, terminating in a long acute point. This specimen is another 

 aberrant or "abnormal " form, agreeing with the species in group a of Caiman's key in 

 most respects, but approaching those in group b as regards the auxiliary claws of the 

 walking legs (Caiman, 191 5, p. 57). 



Distribution. Previously recorded from off Cape Adare. 



