NYMPHONIDAE 33 



B. First tibia the longest segment; 38-48 spinules on each finger of chela; 23-38 denti- 

 culate spines on oviger ; tarsus longer than propodus. 



1 . Auxiliary claws absent ; tarsus twice as long as propodus ; segment 5 of (J oviger 

 short, considerably expanded in distal half; 20-27 femoral gland-openings 



N. compactimi, Hoek 



2. Auxiliary claws vestigial; tarsus not more than half as long again as propodus; 

 segment 5 of (J oviger greatly inflated in distal half (thin-walled part usually 

 collapsed); 16-18 femoral gland-openings N. australe, Hodgson 



V. Segment 5 of (^ oviger relatively short and distinctly clubbed at distal end (type II); neck 

 short and body compact ; auxiliary claws well developed. 



A. Two terminal palpal segments together at least three-fourths of second segment; no 

 femoral gland-tubercles; number of denticulate spines on oviger exceeding 20 (22-36) 

 in adults. 



1. Second tibia the longest segment; 30-36 denticulate spines on oviger; 35-46 

 spinules on each finger of chela ; two terminal palpal segments together subequal 



to second segment; 30 femoral gland-openings A^. orcadense, Hodgson 



2. First tibia the longest segment; 22-27 denticulate spines on oviger; less than 30 

 spinules on each finger of chela; two terminal palpal segments together three- 

 fourths of second segment ; femoral gland-openings not observed. 



a. 18-25 short curved spinules on each finger of chela; palm approximately twice 



as long as high N. articulare, Hodgson 



b. 6-9 long spinules on each finger of chela ; palm only as long as high [trunk 

 segments 3 and 4 fused] N. tieiimayri, n.sp. 



B . Two terminal palpal segments together approximately one-half to one-fourth of second 

 segment ; 3-7 wide femoral gland-tubercles ; number of denticulate spines on oviger 

 less than 20 (10-18) [first tibia the longest segment; trunk segments 3 and 4 fused]. 



1. Number of spinules on each finger of chela exceeding 25 (28-45). 



a. Ocular tubercle of medium height; fingers of chela rather shorter than palm; 

 tarsus in adults considerably shorter than propodus (much shorter in immature 

 specimens) A'^. hrevicaudahim , Miers 



b. Ocular tubercle high; fingers of chela equal to or rather longer than palm; 

 tarsus in adults rather longer than, in immature specimens subequal to, 

 propodus N. biarticidatum, Hodgson 



2. Number of spinules on each finger of chela less than 25 (9-20). 



a. Fingers longer than palm [each armed with approximately 20 spinules; 2-3 

 short, spinose projections on each lateral process and each first coxa ; tarsus and 

 propodus spinose] N. mendosum, Hodgson 



b. Fingers shorter than palm. 



i. Ocular tubercle only as high as wide ; two terminal palpal segments together 

 two-fifths of second segment ; setae on legs much shorter than the diameter 

 of the segments carrying them A'^. proximum, Caiman 



ii. Ocular tubercle long and slender, 4-6 times as high as wide; two terminal 

 segments very short, together only one-fourth of second segment ; long setae 

 on scape, lateral processes and legs, equal to or longer than the diameter of 

 the segments carrying them N. bouvieri, n.sp. 



