122 " ENDEAVOUR " SCIENTIFIC RESULTS. 



the spines showing signs of longitudinal arrangement and 

 continued half way down the dactylus and nearly as far 

 on the immovable finger. 



The ambulatory legs are rather broad, and little armed ; 

 the merus has a terminal spinule on the upper border and 

 a rightangled subterminal tooth. 



The very young have some long soft hairs among the 

 short bristly ones. 



Remarks. P. tomentosus is by far the most abundant 

 species of Pilumnus in the "Endeavour" collection. One 

 would think from Miers 's figure, loc tit., that it was very 

 smooth and trim looking, but it has a strong tendency to 

 collect dirt and is very untidy looking. Some of the spines, 

 especially those on the back, retain a red colour in alcohol. 



PILUMNUS HIRSUTUS, Stimpson. 

 (Plate xxviii.) 



Pilumnus hirsutus, Stimpson, Proc, Acad. Nat. Sci., 

 Philadelphia, x., 1858, p. 37 [34] ; Smithsonian 

 Misc. Coll., xlix., 1907, p. 69, pi. ix., fig. 1. 



Twelve miles north-north-east of Bowen. Queensland, 

 19-25 fathoms; E.3156; one female. 



Twenty miles north-north-east of Double Island Point, 

 Queensland, 30 fathoms; E.4436; one male, one female. 



Measurements. Female (E.3156), total length of cara- 

 pace 10.1, width including spines 14.1, fronto-orbital width 

 11 mm. Female (E.4436), length 9.8, width 14.1, fronto- 

 orbital width 10.4 mm. Male (E.4436), length 7.4, width 

 10.1, fronto-orbital width 7.8 mm. Ratio of length to 

 width in the three specimens, 1 -.1.4, 1 :1.44, 1 :1.37, the 

 male being narrower than the females, and the females 

 with a wide range of variation. 



There is also some variation in the convexity and in the 

 advancement of the front. The larger female is the most 

 convex, the smaller female has the least produced front, 

 and appears to have (though really has not) the greatest 

 relative fronto-orbital width. 



