CHAROPINUS. 189 



the tip to a large horizontal chitinic appendage. Egg- 

 strings tolerably thick and elongate, and containing 

 numerous ova. 



Male. Very small, somewhat similar in structure 

 to the male of Lern&opoda cluthae. 



1. Charopinus dalmanni (Retzius). 

 (Plate LV, figs. 1-4; Plate LIV, figs. 12-17.) 



1829. LernaBd dalmanni Retzius. (lOla) p. 109, : vol. xxix, p. 6, figs 5-9 

 (1830). 



1832. Lerneopoda dalmani Novdmann. (89) p. 138. 



1837. Lernseopoda dalmanni Kroyer. (70) vol. i, p. 264. 



1862. Lerneopoda dalmanni Turner & Wilson. (140) p. 77, pi. iv. 



- r>/~*O m . ' 77 ' T7* " /Ht \ ClCif\ 1 * /I 



1863. Charopinus dalmanni Kroyer. (71) p. 280, pi. xiv, figs. 6, a-g. 

 1879. Stylophorus hypocephalus Hesse. (59) (6) vol. viii, art. 15, p. 31. 

 1891. Charopinus dalmanni T. Scott. 9th Ann. Report Fishery Board 

 for Scotland, p. 310. 



1900. Charopinus dalmanni idem. (112) p. 169, pi. viii, figs. 6-10. 

 1904. Charopinus dalmanni A. Scott. (109) p. 43. 



'Female. Cephalothorax short, somewhat trian- 

 gular in outline, and usually bent abruptly downwards 

 so as to form a more or less distinct angle with the 

 posterior part of the body. There springs from each 

 side of the angle thus formed a long, moderately 

 slender, and indistinctly annulated appendage which at 

 the apex becomes dilated and lunuliform. The lunuli- 

 form apices of these elongated appendages, otherwise 

 described as the second maxillipeds, though not 

 actually coalescent, fit closely together, and clasp a 

 cartilaginous or chitinous bar which extends some 

 distance on each side of the conjoined apices; this 

 complex structure, buried in the tissues of the fish, 

 forms a secure anchorage for the parasite. Imme- 

 diately in front of the base of each of the second 

 maxillipeds there is on each side of the thorax a small 

 rounded protuberance termed by Retzius and Kroyer 

 " eye-like spots," but they are not supposed to be 

 eyes, and their true character seems to be obscure. 

 The posterior and genital portion of the body becomes 

 gradually and considerably enlarged toward the distal 

 end, and the postero-lateral corners form bluntly- 



