AMMOTHEIDAE 



separating the setae into two groups (Gordon, 1932 «, p. 92, fig. 4^). Occasionally no 

 emargination occurs and the lateral setae are uniformly arranged, so that all trace of 

 fusion is obliterated and the palp has the appearance of a normal six-jointed appendage 

 (Fig. 66 c). 



The egg masses are irregularly-shaped rings strung on each oviger like beads on a 

 thread; they number 1-4 on each oviger (the male oviger is represented in Fig. 65 a). 

 There are three pairs of male genital openings. 



The specimens from the Falkland Islands differ considerably from typical T. pfefferi. 

 (i) The palp is six-jointed (without any trace of a seventh segment) and the terminal 



Fig. 68. Tanystylum pfefferi, Bouvier. Third leg of male : «. Typical— St. WS 25. 6.St.WSi24; 

 a number of small capsules (? encysted Protozoa) attached to first coxa. 



segment is shorter, not equal to or longer, than the second segment (Fig. 66 a). (2) The 

 walking leg is more robust and the propodus and tarsus are considerably longer relative 



to the second tibia f l^^^I^h °f second tibk ^ 1:25 .^^^^^^ „f i75zi:9\ The 

 to the second tibia [j^^^^ ^f ^^j-sus + propodus i i / 



other differences are very slight. (3) The specimens are of much smaller size, yet many 

 females and at least one male have genital apertures (see measurements). (4) There is 

 usually a narrow conical process on the ocular tubercle above the level of the eyes. 

 (5) There are as a rule no setae or tubercles on the lateral processes. (6) The abdomen 

 is more oblique. (7) The chelophores are rather longer (Fig. 67 a and b). 



The specimens from Gough Island (WS 124) are much more like the typical form. 

 The abdomen is nearly vertical, the ocular tubercle and the chelophore are quite 

 typical, and the walking leg, though somewhat more robust, has a long second tibia 

 (Fig. 68 b: cf. Figs. 68 a and 67 a). There are one or even two small rounded tubercles 



