NYMPHONIDAE 



6i 



openings on proximal two-thirds of mid-ventral surface. First tibia the longest segment. 

 Tarsus and propodus both elongated, the former considerably longer than the latter. 

 Claw approximately half as long as propodus, auxiliaries vestigial. 



The female has the oviger of the normal female type ; the femur is rather swollen 

 ventrally except in the distal third, the length being 3-5-4-5 times the maximum width. 



Remarks. A re-examination of Hodgson's type specimens of A'^. assirnile left no doubt 

 as to their identity with A^. mistrale. 



b 



Fig. 25. Palp of: a. NympJion bouvieri, n.sp. b. N. brevicaudatum, Miers. 

 c. N. neumayri, n.sp. ci. N. australe, Hodgson. (All x 27.) 



The Discovery specimens from St. 170 agree with the co-types of A^. australe; the 

 lateral processes are but little separated, the legs are relatively stout and bear numerous 

 long setae. The majority of the specimens, however, have the legs more slender and less 

 setose, the body less compact, and thus agree more closely with A^. australe var. 

 aiistriiiorum, Hodgson. Many of the specimens, especially those from St. WS 32 to 

 St. 144 (in the list of stations) are even less setose than the atistrinormn forms. 



Loman (1923, p. 13) has emphasized the importance of the number of denticulate 

 spines on the four terminal segments of the oviger in the genus Nymphon. In nine 

 co-types of A^. australe examined the total number of denticulate spines varied from 

 twenty-three to thirty, and in six co-types of A^. australe var. austriiwnan^ from thirty 

 to thirty-seven. The greater number in the variety is probably due to the fact that the 

 specimens are of considerably larger size than the typical forms. At any rate, the 

 number varied from twenty-eight to thirty-four in all samples of the Discovery material 



' Hodgson (1907, p. 35) states that in N. australe var. ausirinorum the "tarsus and propodus together are 

 distinctly shorter than the femur" and equal to it in typical specimens; but in the co-types measured, tarsus 

 and propodus together are nearly equal to the femur in A'^. australe as well as in the variety austrinorum. 



