160 MR T. V. HODGSON ON THE 



taper to a blunt point, are devoid of setae, and do not appear to have attained their full 

 development. 



Leionymphon Clausi (Plate II., figs. 1, la). 



Ammothea Clausii, Pffeffer, (24), pp. 43-44. 

 Leionymphon Clausi, Hodgson, (13), p. 40. 



Specific Characters. Body with lateral processes not widely separated but divergent. 



Abdomen tall, erect, immediately behind posterior trunk segment. 

 Palps nine-jointed, the last five differing but little in size. 

 Ovigers ten-jointed, without terminal claw, and differing in the two sexes. 

 Legs with strong terminal claw and auxiliaries ; about five stout spines ventrally and 



proximally on the propodus. 



The Body is robust, with the lateral processes rather long, distinctly but not widely 

 separated, divergent. Segmentation rendered conspicuous by three prominent trans- 

 verse ridges, which are rounded and not produced into a median point. 



The Cephalon is but very little expanded. Its anterior margin is straight, and it is 

 about two-thirds the length of the anterior segment. At its antero-lateral angle it 

 bears a distinct tubercle, and there are two more similar ones on each side of the lateral 

 processes. Here the posterior one of each pair is the largest. 



The Ocular tubercle lies slightly in advance of the middle line of the cephalon ; it 

 is tall and cylindrical, bearing four well-developed eyes, above which it terminates in an 

 elongated cone. 



The Abdomen is directed straight upwards, and lies so close to the posterior segment 

 that the line passes over its base. It is cylindrical, tapering distally to a blunt point. 

 The length of the body, measured to the extremity of the posterior lateral processes, is 

 barely 6 mm. ; its width is 4 mm. 



The Proboscis is pyriform, quite smooth, and fully 5 mm. in length. Movably 

 articulated to the body, it is carried directly downwards at a considerable angle. 



The Chelifori are rudimentary ; they arise from the anterior margin of the cephalon 

 above the proboscis, and are curved, having a few setae distally. The chelae are irregularly 

 shaped knobs inclined downwards, with small tubercles to represent the dactyli. 



The Palps arise just below the chelifori at the sides of the proboscis, and are nine- 

 jointed. The first joint is short and stout ; the proportions of the three following are 

 as 6, 1, 4'5 ; the remaining five differ but little in size, and, retaining the proper numbers 

 of each joint, their sequence in point of length is as follows : 5, 7, 9, 6, 8. The entire 

 appendage is covered with very small setae, and these are specially numerous on the 

 ventral surface of the five terminal joints. 



The Ovigers are ten-jointed and arise ventro- laterally from a small body-process on 

 the neck, and therefore immediately in front of the first pair of lateral processes. 



(ROY. soc. EDIN. TRANS., VOL. XLVI., 180.) 



