758 DESCRIPTION OF SOME NEW AUSTRALIAN DECAPODA, 



legs rather depressed, the carpus as long as the carapace, its 

 anterior border acute, with a low tooth near its proximal end, its 

 posterior border with two teeth, the second at the distal end, the 

 first near it. Ambulatory legs transversely lineolate, free from 

 teeth or spines. Length iV in. ; breadth J in. 



Port Denison (Mr. Ales. Morton). 



16. Porcellana pulchella, sp. n. 



Carapace oval in outline ; surface very obscurely lineolate ; 

 lateral margins entire. Front broad, nearly straight, but with a 

 very obscure mesial lobe ; inner orbital angles very sHghtly 

 projecting. Chelipedes large, the right the larger ; carpus 

 strongly tuberculated above, armed with two conical teeth inter- 

 nally ; propodos ornamented externally with four longitudinal 

 ridges, strongly tuberculated in the smaller chelipede, nearly 

 smooth in the larger, and separated by deep sulci. Ambulatory 

 legs with a few obscure granules above. Length of carapace £ 

 in. Colour cream colour, with six rounded orange spots on the 

 carapace, and others on the chelipedes and ambulatory limbs. 



Holborn Island, twenty fathoms ; Port Molle. 



This species is allied to P. sculpta, Milne-Edwards, but differs 

 from it in having two teeth on the anterior border of the carpus; 

 from P. pisum it is distinguished by the possession of the flat 

 tubercles on the carpus, and the longitudinal sulci on the propodos. 



17. Porcellana nitida, sp. n. 

 Carapace a little longer than broad, closely lineolate. Front 

 prominent, trilobed, the central lobe much larger than the others, 

 triangular, the lateral lobes very small ; two acute teeth behind 

 the orbit, and a rounded lobe on the lateral border a little further 

 back. Carpus of chelipedes a little longer than broad, smooth, 

 with a sharp entire internal crest ; propodos smooth, narrow ; 

 fingers hooked and crossing one another at the tips. Length \ in. 



Port Denison, five fathoms. 



