530 J. R. Henderson — Some "Investigator" Pagiirulse. [No. 3. 



upper surface. The propodus is slightly flattened when compared with 

 the carpus, though both its surfaces are really somewhat convex ; tin- 

 granules are practically confined to its inner and outer margins, where 

 they have assumed a distinct spinose character ; they are strongly 

 marked also on the corresponding margins of the fingers. The upper 

 surface of the hand is pubescent, but otherwise almost smooth. The 

 left chelipede extends to a point opposite the middle of the carpus of 

 the larger chelipede. It is everywhere clothed with rather long hairs, 

 and the upper margin of the carpus is carinated. 



The ambulatory legs are very long and slender, even exceeding 

 the chelipedes, and they are everywhere glabrous. The anterior 

 margin of all the joints, but especially the meri, carries a few setose 

 hairs, and there is a small spinule at the anterior distal end of the 

 carpi. The dactyli are slightly bent, and flattened towards their 

 apices ; their apical portions carry long setose hairs. 



The single specimen measures as follows : — 

 Length of carapace ... ... ... 12 mm. 



„ „ right chelipede ... ... ... 52 ,, 



„ „ left chelipede ... ... ... ... 27 ,, 



„ „ merus of right chelipede ... ... ... 12 „ 



„ ,, carpus of same ... ... ... 15 ,, 



„ „ propodus of same ... ... ... 20 „ 



„ „ dactylus of same ... ... ... 8 „ 



„ „ second right leg ... ... ... 57 „ 



„ „ propodus of same ... ... ... 12 „ 



„ „ dactylus of same ... ... ... 20 „ 



The gill-filaments are somewhat flattened, and arranged, as usual 

 in the genus, in four rows ; the filaments of each outer row are about 

 two-thirds the length of, and at the same time somewhat narrower than, 

 those of the inner row. 



The present species, which I have pleasure in associating with the 

 name of Surgeon- Captain A. R. S. Anderson, is in some respects similar to 

 P. pilosimanus* S. I. Smith, but is more slender, and distinguished at 

 once by the different nature of its ophthalmic scales. In the latter 

 respect it is more like P. affinis, Henderson, but this latter is a much 

 stouter species, and differs from the one just described in many respects. 



* According to MM. A. Milne-Edwards and Bonvier, the Parapagurus abyssorum 

 of my Report on the "Challenger" Anomnra, is identical with P. pilosimanus. 

 At the time the Report was written I had compared the " Challenger" specimens 

 with those taken by the " Talisman," to which A. Milne-Edwards had given the 

 name of Pagurus abyssorum, and finding them identical, described the species under 

 the latter specific name. The Eupagurus jacobii, A. Milne -Edwards, is also identical 

 with P. pilosimanus. 



