18 " ENDEAVOUR " SCIENTIFIC RESULTS. 



Orbit incomplete below, the postorbital spine conical, not 

 cupped, and usually remote from orbit. 



Milne Edwards in making this genus divided -it into two 

 sections according to the character of the orbit. Later 

 (1876) Miers divided Paramithrax into two subgenera accord- 

 ing to the shape and ornamentation of the chelipeds. calling 

 one division Leplomithrax, type P. (L.) longimamt.s Miers, 

 1876. Milne Edwards's basis of division seems move reason- 

 able than that of Miers. The only species, P. ijaimardii, 

 which Milne Edwards put in his second section, is < -01120 neric 

 with longimanus, therefore the name Leptomithrar is a va liable 

 for that section. 



PARAMITHRAX MINOR, Filhol. 

 (Plate viii.) 



Paramithrax minor, Filhol, Bull. Soc. Philom. (7), ix., 1885, 

 p. 27 (Cook Straits, especially Massacre Bay, 15-20 

 meters) ; Mission de 1'Ile Campbell (Passage de Venus, 

 1874), iii., part 2, p. 356, atlas, pi. xl., figs. 4, 5 and 7 

 (hardly fig. 6, which is apparently Acanthophry.s fiJholi). 



Between Port Stephens and Newcastle, New South Wales, 

 22-60 fathoms. Three males, two of them large, and one 

 female. 



Oyster Bay, Tasmania, 26 fathoms. One ovigerous female. 



Oyster Bay (depth not given). Fifteen males, ten females 

 (nine ovigerous). Dorsal aspect concealed by a dense coating 

 of algae, hydroids, etc., attached by the hairs of the carapace ; 

 chelae, wrists and under part of arms bare. 



Entrance to Storm Bay, Tasmania. Two males, three 

 females. 



There is a short spine on the preorbital lobe ; the postorbital 

 spine may reach farther forward than the tip of the preorbital 

 spine, or not so far forward. Of the two hepatic spines, the 

 anterior is much the larger. There is a curve of seven spines 

 on the branchial region, the last two of Avhich are above the 

 margin. The rostral spines are broad and flat, their outer 

 margins are nearly parallel to each other. The tubercles of 

 the dorsal surface are not crowded, a few of them are spini- 

 form ; all have a tuft of curled hairs. There are longer 

 hooked hairs on the inner margin of the rostral horns, also 

 on the dorsal surface whence they are continued backward 

 on the gastric region. 



