466 On the Crustacean Fauna of New Zealand. 



First segment of pereion rather short, second long, third and 

 following gradually decreasing. Superior antennas two fifths 

 of the length of animal ; flagellum with the infero-distal 

 extremity of each articulus produced, but without cilia. Infe- 

 rior antenna not so long as the peduncle of the superior by 

 one joint. Second pair of gnathopoda articulating behind the 

 centre of the second segment of the pereion ; propodos ovate ; 

 palm armed with a prominent posterior tooth, and a smaller 

 but distinct anterior tooth (not lobe) ; dactylos very much 

 curved. Three posterior pairs of pereiopoda have the anterior 

 riiargins excavate, the part against which the closed dactylos 

 impinges armed with a tooth. Length 1 inch. 



Hab. Cook Strait. 



This species approaches C. geometrical Say, from which 

 it differs, however, in the form of the spine on the cephalon, in 

 the length of the antennas, and in the articulation and arming 

 of the second pair of gnathopoda. 



ISquilla indefensa, sp. no v. 



Rostral plate semioval and pointed at its distal extremity. 

 Carapace retracted in front, expanded and rounded behind, 

 smooth, the antero-lateral angles rounded and slightly pro- 

 duced forwards. Large prehensile limbs with terminal joint 

 as long as the preceding one, and armed with ni?ie spines 

 (exclusive of the terminal one, which is very large). Abdo- 

 men smooth ; terminal segment with six marginal spines and 

 three depressed longitudinal ridges, which terminate poste- 

 riorly in spines. Length 2^ inches, 



Hab. Chatham Islands and Kapiti. 



Porcellana ruincola^ Stimpson. 

 A single specimen obtained at Lyall Bay, Wellington, in 

 May 1878. 



Xantho spino-tuherculatus, Lockington. 



A fine pair of this species was obtained at Porirua, near 

 Wellington, by Mr. R. B. Gore, in January 1877. 



Ehalia tumefacta, Mont. 



A complete female and the right anterior leg of another 

 specimen were obtained by dredging in Cook Strait in 

 January 1876. 



Elamena producta, sp. nov. 

 Carapace flat, broader than long ; margin with two teeth, 



