— 20 — 



of the lateral process. — Length of the largest male i2.3 mm . 



Off Cape St. Blaize, southern end of Africa. (Several 

 specimens received from the Rev. T. R. R. Stebbing, who 

 in his work on South African Crustacea recorded them as 

 N. a list rali s G. O. S.). 



N. ausiralis G. O. S. — Female : Second antennular 

 joint with the upper inner edge terminating in a minute 

 spine, but without any raised plate. Male : Second anten- 

 nular joint with a low, raised plate projecting from the 

 inner upper edge near the distal end ; third joint without 

 any spiniform setae, but with some quite minute hairs dis- 

 tributed along the inner side. Median lobe of the copula- 

 tory organs reaching fully the end of the lateral process. 

 — Length of a female 1 3 . 5 mm., of a male i5 mm. 



South-East Australia. (It may be added that according 

 to my own observation two of the specimens mentioned 

 by Ortmann in 1894 as N. ausiralis belong to N. simplex 

 n. sp., and I suppose that all his specimens from the loca- 

 lities enumerated by him belong to the last-named species.) 



b. Lobe from first antennular joint large, conspicuously 

 longer than broad, not triangular, with the short, acute 

 tip turned mainly or totally outwards. 



N. simplex n. sp. — Female : Second antennular joint 

 with the upper inner margin distally raised in an oblique 

 spine or an obliquely triangular, acute tooth. Male : Second 

 antennular joint at most with a small, raised, acute protu- 

 berance on the usual place ; third joint with the row of 

 spiniform setae situated as in N. Couchi. Median lobe 

 of the copulatory organs abbreviated, having no part 

 along the outer margin of the lateral process. — Length 

 1 1 - 1 6 mm. 



Tropical and northern temperate East Pacific. 



