19G ATTSTEALIAN MALACOSTEACA. 



at equal distances, and continued over a third part of the cara- 

 pace, the two terminal teeth a little removed from the others, 

 smaller, placed near the apex ; the inferior crest with 3-4 teeth. 

 First pair of feet reaching the apex of the appendages or 

 extending a little beyond them. Second pair of feet shorter than 

 the carapace, cylindrical, smooth ; the merus shorter than the 

 appendages ; carpus cylindrical, and almost equalling the chelae 

 in length, much longer than the palm ; fingers not gaping, two- 

 thirds of the length of the palm. Posterior feet rather long, the 

 last extending beyond the appendages of the antennae. [Heller.'] 



Sydney (Heller). 



Sub- Genus Pal.emon, 



Carapace with a single lateral spine on the front margin, and 

 behind it a second spine, on the hepatic region. (Species often 

 attaining a large size, and with the second pair of legs greatly 

 developed.) 



366. Palsemon ornatus. 



Palcemon ornatus, Olivier, Encycl., viii., p. G60, (1812) ; M.- 

 Edw., Hist. Nat. Crust., ii., p. 39G, (1837) ; E. J. Miers, Cat. 

 Crust. N.Z., p. 87, (1876). 



Rostrum nearly straight, not reaching to, or at least not passing 

 beyond, the end of the lamellar appendage of the external 

 antennae, and armed with eight to ten small teeth on its superior 

 border, and with two or three on its lower border. Legs of the 

 second pair very long, slender, and as it were chagrinate ; carpus 

 of about the same length as the palmar portion of the hand ; 

 fingers cylindrical, and a little looked at the end, and armed with 

 a tooth on the mobile finger and two near the base of the 

 immobile finger. In young individuals those teeth are scarcely 

 visible, but in the course of growth, they become very strong. 

 Following legs nearly smooth and having the terminal joint 

 extremely short. Last segment of the abdomen obtuse at the 

 end, terminated by a semicircular border, armed on each side 

 with a spine. Length nearly 6 inches. [M.-E.] 



Widely distributed in Australia. Found also at the Mauritius, 

 Fijis, New Hebrides, New Zealand, etc. 



