354: Transactions. — Zoology. 



The material available for my purpose has been derived 

 from various sources. Several specimens have been secured 

 by myself, chiefly on fishes bought for household use. A few 

 were obtained during a whaling cruise by the captain of the 

 barque "Splendid"; unfortunately there is no record with 

 these to show from what host the specimens were taken. 

 Mr. A. Hamilton has very kindly sent me, from time to 

 time, specimens taken from various fishes caught at Napier. 

 Lastly, Professor Parker placed at my disposal the material 

 accumulated in the Otago Museum by himself and Professor 

 Hutton. 



The only species hitherto described from New Zealand 

 seas are five in number, and belong to as many distinct 

 genera. Ic is rather remarkable that Heller, during the stay 

 of the "Novara" in Auckland, should only have obtained 

 three species, when it is considered how much attention he 

 paid to this order. The forms now recorded and described 

 bring up the number of species to 24, and of genera to 16, and 

 include representatives of all five families of parasitic Cope- 

 jpoda. It is evident that these represent only a small propor- 

 tion of the species which may be looked for in our seas. 

 No doubt many more species will be discovered as the habits 

 and life-histories of the fishes of the colony are more closely 

 investigated. The present contribution is a mere starting- 

 point. 



Fam. CALIGID^. 



Genus Lepeophtheirus, Nordmann. 



1. Lepeoijhtlieirus liuUoni, n. sp. Plate XXVIII. , fig. 10, 

 a-c ; Plate XXIX., a-m. 



Male. — Body flat and depressed. Cephalothorax semi- 

 orbicular, abruptly truncate behind ; outer margin with a 

 finely plumose fringe. Frontal lobe slightly hollowed in the 

 middle of the front margin ; distinctly separated at the sides 

 from the cephalothoracic shield. Hind portion of thorax 

 hardly half the width of the cephalothorax. Fourth segment 

 with wide semi-lunate dorsal lamellae. Genital segment 

 about as broad as preceding, produced posteriorly into two 

 wing-like projections, each bearing at its outer extremity a 

 pointed and toothed appendage. Abdomen long, narrow, and 

 2-jointed. Caudal lamellaB hardly shorter than last joint of 

 abdomen. 



Female.- — Body somewhat arched above. Cephalothorax 

 narrowed in front, and gradually broadening out behind, its 

 posterior extremity being curved inwards. The whole of the 

 margin is somewhat turned inwards. The hind part of the 

 body is rather narrower than in the male, and the lamella) of 

 the fourth segment are not so greatly developed. 



