1 899.] PAB.VSITIC COPBPODA 07«- FISHES. 469 



AntJiosoma smithii Baird, Brit. Entom. 1850, p. 299, pi. sxxiii. 

 fig. 9. 

 ,. „ Leach, Enc. Brit. Suppl. 1816, p. 406, pi. xx. 



fig. 1. 

 „ „ Kroyer, Tidsskrift, ii. 1838, p. 295, pi. ii. fi^. 2. 



„ M.-E. Hist. Nat. Crust, iii. 1840, p. 483, 

 pi. xxxix. fig. 5. 

 „ crassus, Stp. & Liitk. Bidrag til Kundskab, 1861, 

 p. 397, pi. xxii. fig. 24. 

 In Coll. Brit. Mus. 

 Host : Lamna coniubica. Pacific and Atlantic, &c. 



Q. 2. TuccA Nordm. 



Head small, rounded, with a lamellar appendage on either side ; 

 neck distinct. No dorsal plates on thoracic limbs. Genital segment 

 large, oval. Abdomen small, biarticulate. Anterior antennae 

 many-jointed, setaceous. Posterior antennae small, unciform. 



(1) TuCCA IMPEESSA. $. 



Tucca impressa Nordm. Bull. Soc. Imp. Moscou, vol. xxxvii. 

 pi. vi. fig. 7 (1864). ' 



Kr. Tidsskrift, i. 1837, p. 182. 



M.-E. Hist. Nat. Crust, iii. 1840, p. 496. 

 Host : Diodon hystrix. Atlantic. 



5> 



5» 



Gr. 3. NoEiON Nordm. 



Head rounded, small ; neck distinct. No dorsal thoracic plates, 

 limbs converted into a divided ventral plate with wing-like ex- 

 pansions anteriorly. 



(1) NOEION EXPAN^SUrS, $ . 



Norion expansus Noi'dm. Bull. Soc. Imp. Moscou, vol. xxxvii. 

 pi. ii. (1864). 

 Host:—? 



G. 4. Epachthes Nordm. 



Cephalothorax as in Lemanthropus, the first pair of thoracic 

 limbs being short, single-branched with three joints, the last three 

 changed into lamellar plates. 



(1) Epachthes paeadoxus. $ . 



Epachthes paradoxus Nordm. Mikrogr. Beitrage, 1832, p. 45, 

 pi. xii. fig. 2. 



Lemanthropus paradoxus M.-E. Hist. Nat.Crust. iii. 1840, p. 499. 

 Host : Mugil sp. Cape of Good Hope. 



G. 5. Leenantheopus Nordm. 



Head oblong or pyriform, sides incurved ; neck distinct. Thorax 

 two-jointed, produced posteriorly in a lobe or a pair of lobes more 

 Proo. Zooi. Soc— 1899, No. XXXI. 31 



