Crustacea from New Zealand. 5 



of both pairs of gnathopoda is defined by a double row of hairs, 

 which are alternately very short, and the point of impinge- 

 ment of the dactylos by a fascicle of short stout spines. The 

 length of the largest specimen obtained by me was only 0*35 

 inch, whereas the Greenland species is said to be 1| inch 

 long. 



Still, after taking all these differences into due consideration, 

 there does not seem to be sufficient reason for separating this 

 southern form specifically from the northern species. 



Melita tenuicornis, Dana (Maim tenuicornis, Sp. Bate, 

 Par ameer a tenuicornis, Miers). 



This species is not uncommon in the rock-pools along the 

 coast. The animals are dark slaty grey in colour, very slen- 

 der and compressed in form, swimming very rapidly. The 

 females are remarkable for possessing a hook-like process on 

 the coxal lamellae of the fourth pair of pereiopoda, almost 

 exactly similar to that figured and described by Fr. Miiller 

 (' Facts for Darwin,' p. 27) as occurring in M. insatiabilis. 



Genus Megamcera, Spence Bate. 

 Megamoera fascicidata, n. sp. (PI. I. fig. 5.) 



Dorsal surface of the animal quite smooth. Eyes reniform. 

 Superior antennas nearly one third as long as the animal ; 

 first and second joints of peduncle rather short, subequal, 

 third joint very short ; flagellum long, very many-jointed, 

 joints transverse and setose ; secondary appendage very 

 minute, one-jointed, and terminated by two or three seto3. 

 Inferior antennae shorter than superior, very similar in the 

 form of the joints of the flagellum. First pair of gnathopoda 

 with carpus and propodos subequal, and fringed on their lower 

 margin with fascicles of serrated or barbed hairs ; propodos 

 broader at distal extremity than at the base, with a rounded 

 projection at the extremity of the lower margin ; palm quite 

 transverse ; dactylos not quite as long as palm. Second 

 gnathopoda larger; carpus increasing in width, with nume- 

 rous fascicles of barbed hairs ; propodos longer, lower margin 

 with barbed hairs, upper with several transverse rows of 

 simple hairs ; palm rounded ; dactylos curved. Pereio- 

 poda somewhat increasing in length posteriorly, and with 

 short spines. Posterior pleopoda considerably exceeding the 

 preceding pair. Telson double. Length 0*5 inch. 



Numerous specimens taken with the dredge in 4-5 fathoms 

 in Dunedin Harbour ; also in rock -pools on the coast both 

 near Dunedin and Christchurch (Sumner). 



