NYMPHONIDAE 



37 



Third leg. Second coxa long and slender, half as long again as the sum of the other 

 two (1-5-17 : i). Femur slightly shorter than second tibia; a row of 9-12 prominent 

 gland papillae on proximal, mid-ventral surface. First tibia the longest segment, half 

 as long again as femur. Tarsus and propodus both elongated, subequal; claw long, 

 about three-fifths of propodus ; auxiliaries absent. 



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 ... 



Remarks. Bouvier has given a long and careful description of this species ; Fig. 75 

 represents an abnormal palp of a co-type in the Paris Museum collection. The Discovery 

 specimens agree very closely with the types. 



This species is most closely allied to N. teniiipes, Bouvier (p. 39), but can readily be 

 distinguished from the latter by (i) the chela with its shorter palm and fewer spinules 

 on the fingers, and (2) the absence of very long setae on the walking legs. 



Distribution. Previously recorded from the South Shetlands. 



Nymphon tenuipes, Bouvier (Figs. 10 ^ and 11). 



Bouvier, 1913, pp. 86-90, te.xt-figs. 35-41. 

 Loman, 1923, p. 14 (in key). 



St. 177. 5. ill. 27. 27 miles SW of Deception Island, South Shetlands, 63° 17' 30" S, 61° 17' W, 

 1080 m. ; M. cs. St. Large dredge: i cJ. 



St. 181. 12. iii. 27. Schollaert Channel, Palmer Archipelago, 64° 20' S, 63° 01' W, 160-335 ni-! 

 M. Large otter trawl: i ? and 5 immature specimens. 



Description of mature male. Trunk slender and loosely built; lateral processes 

 separated by one and a half, to more than twice, their own diameter. Neck long, base 

 of oviger in contact with first lateral process. Ocular tubercle low, broad, rounded at 

 apex; eyes well developed. 



Proboscis sub-cylindrical, three-fourths of scape and of cephalon. 



Abdomen short, reaching to distal end of fourth lateral process, elevated at an angle 

 of about 40-45°. 



Chelopiiore slender. Scape with a few fine setae; length six times the distal width. 

 Chela subequal to scape, palm long and narrow, setose pad very short ; fingers armed 

 with about 39 and 42 spinules respectively (Fig. 11 b). 



Palp slender. Segments 2-5 in the proportions 10 : 6-5 : 5 : 5. 



