1899.] PABASITIC COPEPOBA OK FISHES. 487 



(1) Lern.ba branchialis. 2 (S . 



Lemcea brancJiialis Linn. Syst, IS'at. 12 ed. 1767, p. 1092 ; Lamarck, 



Cuvier, Burmeister, Gucrin, Kroyer, Oken, 



M.-E.. Thompson, Baird, Stp. & Liitk., 



V. Ben., B.-S., Hesse. 



„ „ S Claus, Beitrag zur Naturges. der Lern. 



1868, p. 16, pi. iii., iv. 

 „ „ Al. Mrdzek, Beitrag zur Anat. der Leru. 



1895. 

 „ „ I. . C. Thompson, Rep. Copep. of Liverp. 



Bay, 1893, pi. xxiv. 

 „ gadina Miill. Zool. Dan. iv. p. 65, pi. cxviii. fig. 4. 



„ O. Fabr. Faun. Groenl. 1780, p. 339. 

 Lernceocera brancliialis Blainv. Journ. de Physique, xcv. 1823, 

 p. 376, pi. xxvi. fig. 1. 

 „ „ Nordm. Mikrogr. Beitrage, ii. 1832, p. 130. 



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

 p. 404, pi. xiii. fig. 29. 

 In Coll. Brit. Mus. 

 Host : gills of Gadidce. N. temperate region. 



(2) Leen^a rigid a. 2 . 



Lei-ncea rigida Kr. Bidrag til Kundskab, 1863, p. 320, pi. xviii. 

 fig. 2. 



Host : — ? Valparaiso. 



(3) Lern^a lusci. 2 ' 



Lerncea lusci B.-S. Ann. & Mag. N. H. ser. 6, xAdii. 1896, p. 13, 

 pi. iv. fig. 6. 



In Coll. Brit. Mus. 



Host : gills of Gadits luscus. Plymouth. 



(4) LeRK^A L0TELL.E. $ . 



Lerncea lotellce Thomson, Trans. N. Z. Inst. 1889, vol. xxii. 

 p. 369, pi. xxviii. fig. 3. 

 In Coll. Brit. Mus. 

 Host : Lotella hacchus. N. Zealand. 



G. 10. H^MOBAPHES Stp. & Liitk. 



Head rectangular, without horn-like processes. Two more or less 

 distinct thoracic segments are visible crowded behind the head, 

 each with a pair of bilobed, not ai-ticulated limbs ; neck very elong- 

 ated, acutely curved, near which flexure are two short blunt 

 processes. Genital segment dilated, twisted on itself, with, on 

 either side over the origin of the spirally coiled egg-tubes, a pair 

 of tubercles ; abdominal portion considerably narrower, with 

 blunted extremity. Two pairs of biramose biarticulated hmbs are 

 present. 



32* 



