48 ON AUSTRALIAN LEUCOSIID^E, 



entire, but obscurely trilobed. Thoracic sinus, as in L. White!, 

 deep, strongly waved above, with a granulated inferior margin. 

 The postero-lateral margin, as in that species, fringed with a 

 line of hair. Maxillipedes and limbs as in L. Whitei, except that 

 the wrist has fewer granules. Abdomen (male) broadly triangular, 

 with a deep median sulcus at its proximal end. Colour of the 

 carapace very light brown, with a blush of dark brown on each 

 hepatic region, and a lighter brown mark on the gastric and 

 genital regions ; the tubercles of the arms pink, and the fingers 

 red at the base. 



Length and breadth about 4^ lines. 



Nearly allied to Z. Whitei, Bell ; but distinguished by the form 

 of the front, and the absence of granules on the hepatic region. 



Ilab. Cape Grenville, and Darnley Id. (Chevert Exped.) 



Sp. 12. Leucosia Leslii, sp. nov. (Plate 6., fig. 1.) Testa 

 rhomboidea ; fronte producto, lobis quatuor; regionibus hepaticis 

 vix planis ; sinu thoracico minime prof undo, haud antice definito, 

 tuberculis quinque repleto. 



Carapace rhomboidal, the lateral angles projecting somewhat; 

 surface with scattered punctations on its anterior half ; hepatic 

 region scarcely convex. Front produced, its anterior border 

 obscurely four-lobed. Thoracic sinus rather shallow, elongated, 

 not defined ; its anterior border not tuberculated ; its cavity 

 occupied by five large tubercles. Lateral border of carapace with 

 a row of tubercles, which are small anteriorly, large and coalescent 

 above the insertion of the arms, stopping short a little behind 

 that point ; postero-lateral and posterior border with a row of 

 small, close-set tubercles. Anterior limbs rather longer than the 

 carapace ; upper surface of arm with a group of small tubercles 

 at the base, and scattered larger tubercles on the proximal half ; 

 inner surface nearly covered with close-set tubercles ; outer border 

 with a row of large tubercles ; inferior surface almost smooth ; 

 inner border of hand with a row of small tubercles. Colour lmht 



o 



