Thomson. — 0)1 Parasitic Copepoda. 



375 



parasites are found on them. I have myself only gathered a 

 few specimens, but a glance at the appended list shows that 

 it is only those kinds of fish wdiich, from their rarity, size, or 

 peculiarity, are collected for museums which have furnished 

 the material examined by me. A close examination of the 

 food-fishes exposed for sale would certainly yield many other 

 kinds of parasitic Copejjoda, and the present paper may be 

 considered as only an introduction to tlie subject, showing 

 what is now known. 



Host. 



Sword-fish {Histiophorus Jterschelii) . . i 



Sword-fish [Xiphiiis gladms) 

 Blue cod (Pcrcis colias) 



lied cod (Lotella bacclms) . . . . - . - 

 Ling {Genypterus blacodcs) . . . . . . \ 



Porcupine-fish [Chilomycteriis jaculifcncs) -j 



Sun-fish [Orthagoriscus molcc) 

 Smooth-hound {Mustclus antarcticus) 

 Porbeagle shark {Lamna cornubica) 

 White shark (Carcharodon rondelctii) 



Sharks, species not indicated 



Skate {Raja nasiita) ( 

 Stingaree (rr;/r707^, sp.)) 



Host not specified ; probably species of 

 sharks 



Parasite. 



Lcpeophthcirus huttoni. 

 Penclla histiophori. 

 PhiUchthys xiphia. 

 Lernanthroptts pcrcis. 

 Lernea lotclUe. 

 Chondracanthus lotella'. 

 Lesteira kroycri. 

 Chondracanthus gcni/pteri. 

 C kondracantUns chiloinyc- 



teri. 

 Cecrops latreillii. 

 Lernfcopoda mnsteU. 

 Anthosoma crassum. 

 Dinematura carcharodonti . 

 Nogagns elongatus. 

 Nogagus valid us. 

 Dinematura hamiltoni. 

 Echthrogaleus braccatus. 

 Pandarus dentatus. 

 Pandarus brevicaudls. 

 Specilligus cnrtlcaudis. 



Brachiella parkerL 



Dlnemattira, affinis. 

 Dinematura neo-zealanica . 

 Pandarus armatus. 



EXPLANATION OF PLATES. 



Plate XXV. 



Fig. 1. Dinematura hamiltoni, male, x 8 : a, anterior antenna, x 10 ; 

 b, posterior antenna, x 23 ; c, oral proboscis, x 23 ; d, man- 

 dible, X 50, and extremity of same showing the saw- like teeth, 

 X 150 ; e, first foot-jaw, x 23 ; /, foot of 1st pair, x 23 ; 

 gr, foot of 2nd pair, x 23; /^, foot of 4th pair (male), x 18; 

 i, foot of 4th pair (female), x 8 ; j, caudal lamellte, x 8. 



Fig. 2. Dinematura neo-zealanica, male, x 8 : a, female, x 8 ; 6, anterior 

 antenna, x 20 ; c, posterior antenna, x 20; d, 1st foot-jaw. 

 x 20 ; f, foot of 4tli pair (female), x 20. 



