S8 



DISCOVERY REPORTS 



Remarks. This species belongs to group I, but the oviger is somewhat transitional 

 between type I b and type I since the fifth segment is gradually expanded towards the 

 distal end. On the whole, the specimen is more nearly related to A^. hngicoxa and 

 N. homohmi than to A^. proceroides and A-", tetiuipes (forms in which the auxiliary claws 

 are absent). The chela is long and slender, and the sixth segment of the oviger is curved, 

 as in the two first-named forms, but Nymphon sp. ? may be easily distinguished from both 

 by the palp which is very similar to that of A^. chorcoti; the second coxa and the tarsus 

 are both relatively much longer than in that species (cf. also the ovigers. Figs. lo b 

 and 24 e). The tarsus is longer than in any other species in group I. 



Nymphon, sp.? (Fig. 24 a, c and d). 



St. 53. 12. V. 26. Port Stanley, East Falkland Island. Hulk of 'Great Britain': i ?. 



Description. Trunk rather compact; lateral processes separated by approximately 

 their own diameter. Neck short ; oviger base large, in contact with first lateral process. 

 Ocular tubercle rather higher than wide; eyes conspicuous. Setae absent. 



Proboscis short, stout, sub-cylindrical, rounded at apex; two-thirds of cephalic 

 segment, and three-fourths of scape. 



Abdomen reaching a short distance beyond fourth lateral process, elevated at an 

 angle of 45°. 



Chelophore. Scape four times as long as wide distally, bearing a few very fine setae. 

 Chela subequal to scape ; movable finger subequal to palm armed with eleven or twelve 

 spinules; 15 spinules on immovable finger (Fig. 24 d). 



Palp as represented in Fig. 24 c, two terminal segments together approximately four- 

 fifths of second segment. 



Oviger. Terminal claw rather more than half of tenth segment, armed with about 

 seven spinules. Total number of denticulate spines 37 (11 + 10 + 7 + 9). Segments 

 4-6 short, in the proportions 1-5:2:1. 



Third leg. Second coxa i -4 times the sum of the first and third. Femur nine times as 

 long as wide, subequal to first tibia. Second tibia the longest segment. Tarsus seven- 

 tenths of propodus, ventral margin of the latter spinose (Fig. 24 a). Claw rather more 

 than one-third of propodus, auxiliaries long, two-thirds of main claw. Setae few in 

 number and very fine. There are long irregular patches of a light brownish or purplish 

 colour on each of the three main segments. 



Measurements {mm.) 



Length of proboscis ... 



Diameter of proboscis 



Length of trunk 



Length of cephalic segment ... 



Width of anterior cephalic lobes 



Width of neck 



Width across second lateral processes 



Length of abdomen ... 



