444 ON THE AUSTRALIAN BRACHYURA OXYRHYNCHA, 



Genus Micippoides, A. Milne-Edwards. 



31. Micippoides longinianus, sp. nov. Plate xxvi., fig-. 5. 



Carapace elongate-triangular, gastric region dilated, armed 

 with eight tubercles, of which two are in the middle line behind, 

 (the last spiniform) and six (smaller), paired, in front ; cardiac 

 region prominent, with two or four large tubercles placed close 

 together ; two prominent flattened tubercles on the posterior 

 margin, a short spine in the middle line immediately in front of 

 these and forming with them an equilateral triangle ; branchial 

 regions dilated, with a few low tubercles. Rostrum inclined 

 obliquely downwards, more strongly deflexed in the female than 

 in the male — consisting of two rather short, triangular, pointed 

 cornua. Eyes retractile ; orbits with a single broad fissure above, 

 separating the upper orbital margin from the post-ocular spine. 

 Basal joint of the antennae broad, divided by a narrow mesial 

 furrow, bilobed at the extremity. A flattened prominence of 

 irregular outline on the sub-hepatic region and two smaller ones 

 behind one on the pterygostomial region, and the other on the 

 margin of the branchial region above the insertion of the first 

 pair of limbs, a fourth small circular and flattened projection 

 immediately external to the base of the antenna?. Anterior 

 limbs very large in the male, more than once and a-half the 

 length of the rostrum, smaller in the female ; arm with a few 

 scattered tubercles ; wrist with two irregular keels above in both 

 sexes ; hand compressed, longitudinally furrowed ; fingers about 

 half the length of the hand, meeting only near their tips, leaving 

 a narrow interspace. Second pair of legs as long as the carapace, 

 following pairs decreasing in length. Abdomen and ambulatory 

 limbs covered closely with short hairs. 



Sab. Port Jackson, (Australian Museum etc.). 



The nearest ally of the present species seems to be Micippoides 

 angustifrons of Dr. A. Milne-Edwards (of which there is a specimen 

 from Eiji in Mr. Macleay's collection) ; and I have ventured to 



