224 COLLECTIONS FEOM MELANESIA. 



joint barely reaches to the subfrontal angle, but attaips to a level 

 with the apex of the inner suborbital lobe ; the antennal flagella are 

 much elongated. The chelipedes (in the single male examined) are 

 rather slender and nearly equal ; the arm has two spines at the 

 distal end of its upper margin ; the wrist is armed with several 

 spines, the strongest one being on the inner margin ; the palm has 

 its upper margin and outer surface armed with small spines or spini- 

 form tubercles disposed in longitudinal series; these are with 

 difficulty discernible through the hairs covering this joint ; fingers 

 brown, and distinctly dentated on their inner margins. The ambu- 

 latory legs are elongated and slender, and have their upper and 

 lower margins clothed with long hairs. Colour reddish (in spirit), 

 with purplish markings. Length about 2| Unea (6 millim.), breadth 

 3 lines (nearly 7 miUim.) ; length of penultimate ambulatory limb 

 nearly 6 lines (12 millim.). 



The single specimen (a male) was obtained at Port Denison, 

 ■4 fms. (No. 111). 



P. cursor, A. M.-Edwards, was founded on specimens from New 

 Caledonia and the Samoa Islands ; the description difiers from the 

 above in several minor particulars ; but I have thought it better to 

 regard the Australian example before me as identical with this 

 species than to run the risk of unnecessarily adding to the synonyma. 

 Mr. HasweU (Cat. p. 67) records it from Port MoUe. 



60. Pilumnus labyrinthious. (Plate X2II. fig. C.) 



In this curious form the surface of the carapace is everywhere 

 covered with raised curved or sinuated ridges, which are separated 

 by wide depressions ; the bO|dy and legs are covered with a dense 

 close brown pubescence ; from most of the ridges and from the teeth 

 of the antero-lateral margins of the carapace spring longer setse, 

 and the margins of the ambulatory legs are also fringed with longer 

 hairs. The frontal lobes, which are scarcely separated as usual by a 

 median notch, are rather broad, straight, and but little prominent ; 

 the antero-lateral margins are somewhat shorter than the postero- 

 lateral, and are armed with three distinct teeth, that of the exterior 

 orbital angle being obsolete. The orbital margin is somewhat 

 thickened ; the epistoma rather longer in proportion to its breadth 

 than is usual. ' The basal antennal joint is short, scarcely attaining 

 to the subfrontal process, and not nearly reaching to the apex of 

 the very prominent lobe at the inner suborbital angle. The cheli- 

 pedes are rather small and (like the carapace) are densely pubescent, 

 besides being clothed with longer hairs ; the outer surface of the 

 wrist or carpus is tuberculated beneath the hairy coat ; the palm is 

 clothed externally with long dense hairs ; the upper margin of the 

 palm bears three distinct tubercles ; the fingers are slaty coloured, 

 dentated on their inner margins and acute at their apices. The 

 ambulatory legs are densely hairy and of moderate length. Length 

 of carapace nearly 4 lines (8 millim.), breadth about 4| lines 

 (9 millim.). 



