116 " ENDEAVOUR " SCIENTIFIC RESULTS. 



The largest specimen is the male. P. 3570, measuring 

 6.4 mm. long by 8 mm. wide, or 1 :1.25. Both females are 

 smaller than the males, the smallest female (P. 3570) 

 measuring 4.8 by 6.9 mm. A lot of four specimens from 

 Port Jackson, sent to the U.S. National Museum (Cat. No. 

 17025) by the Australian Museum, run much larger, one 

 male being 9.6 by 14.4 mm. or 1 :1.5. The width of the 

 carapace, it will be seen, increases rapidly with age. 



In the "Endeavour" specimens the main pubescence is 

 very short and close, but the tufts scattered about, 

 especially on the elevations are formed of long, coarse but 

 soft, tubular hairs, which are much longer than on the 

 larger specimens; of a different sort are the long, slender 

 hairs on the ambulatory legs and on the granulated portion 

 of the chelipeds. 



PlLUMNUS TANTULUS, Sp. 110V . 



(Plate xxv.) 



Type-locality. Platypus Bay, Queensland, 5-9 fathoms; 

 E.3113 ; one male, holotype. 



Additional localities. Eleven to fourteen miles north- 

 west of Pine Peak, Queensland, 24-26 fathoms; E.3189; 

 four males, two females (one ovigerous). 



South 29 east of Pine Peak, Queensland; P.3573 ; four 

 males, two females. 



Measurements. Male holotype, total length of carapace 

 7.3, width including teeth 10.2, fronto-orbital width 7.4, 

 width of front 3.7 mm. 



Description. A small species. Carapace covered with 

 short, dense pubescence and some longer, fine hairs. When 

 the carapace is cleaned, it is seen to be well areolated; 

 antero-lateral regions rough with four elevations, one 

 hepatic, one extending inward and forward from the last 

 tooth, two behind the orbit ; postero-lateral regions finely 

 granulate. Frontal lobes almost free of pubescence, 

 margins slightly oblique and granulate, median cut 

 triangular; outer teeth independent, tuberculiform ; pre- 

 orbital angle very obtuse and inconspicuous. Two well- 

 marked emarginations in the upper, granulate border of 

 the orbit ; a large, slightly acute tooth at outer angle, 

 beneath which there is a narrow notch followed by a 



