AMMOTHEIDAE 



it is a smaller form with a shorter, more cylindrical proboscis, a longer palp and much 

 shorter spines on the propodus (see key). 



Measurements (mm.) 



Length of proboscis .. . 



Proximal width of proboscis 



Length of trunk ... 



Length of cephalic segment 

 Width of anterior cephalic lobes 

 Width across second lateral processes 



Length of abdomen ... 



Length of scape 



Greatest width of scape 



Third leg: 



First coxa . . . 



Second coxa 



Third coxa 



Femur 



First tibia . . . 



Second tibia 



Tarsus and propodus 



Claw 



Auxiliaries ... 



(holotype) 



4-8 



2-0 



8-0 

 3-6 



2-2 



7-47 

 2-8 



2-1 

 I-O 



1-6 



3-3 

 0-8 



9-4 

 9-4 



10-2 

 3-2 



1-5 

 0-6 



(St. 51) 

 3-6 



2-0 



6-8 



3-4 



2-43 



6-0 



2-0 



I -8 



0-9 



1-47 



2-5 

 i-o 

 6-4 

 6-4 

 6-8 

 2-75 



1-2 



0-53 



?(St. 



WS244) 



4-8 



2-0 



8-0 

 4-0 

 2-4 

 6-8 



2-75 



2-2 

 1-0 



1-6 

 3-2 

 1-0 



9-2 



8-8 



lO-O 

 3-2 



1-33 



0-5 



Ammothea longispina, n.sp. (Figs. 50 ft, 51 and 52). 



St. 170. 23. ii. 27. Off Cape Bowles, Clarence 

 Island, 61" 25' 30" S, 53° 46' W, 342 m. ; R. Large 

 dredge: i $ (holotype). 



Description of holotype. Trunk rather 

 compact; lateral processes separated by 

 narrow intervals, last two pairs by almost 

 their own diameter. Transverse body ridges 

 prominent, each with a narrow, conical 

 median projection. Cephalic segment with 

 a blunt rounded lobe external to the inser- 

 tion of each chelophore ; hardly as long as 

 the sum of the two succeeding segments. 

 Ocular tubercle rather higher than wide, 

 stout, rounded at apex; eyes set near apex, 

 of small size but the anterior rather larger 

 than the posterior pair (Fig. 51). 



Proboscis longer than trunk, straight, 

 slender ; widest in proximal third narrowing 

 to almost half this width anteriorly; ap- 

 parently suited for probing. 



Abdomen rather long but much elevated, so that it does not reach beyond the distal 

 end of the fourth lateral process. 



Fig. 50. Terminal segments of third leg of: a. Am- 

 mothea tetrapora, n.sp. b. A. lonaispina, n.sp. (Both 

 X 20.) 



