NORTH AMERICAN PARASITIC COPEPODS— WILSON. YOl 



not yet been well enough described to be located anywhere with 

 satisfaction. 



B. ohesa (Kr0yer), 1837, p. 270, was described as belonging to the 

 genus Lernaeopoda. Kr0yer had but a single specimen and had for- 

 gotten on what host it was found, but said he thought it was ''Squalus 

 acantUus Linn." Olsson found the same parasite in the throat of 

 Trigla gurnardus, and on accomit of the elongate cephalothorax and 

 the removal of the second maxillae some distance behind the other 

 mouth parts, he transferred it to the genus Brachiella (1869, p. 42), 

 where it rightly belongs 



In 1870 P. J. van Beneden reported (p. 10) the same species from 

 "Spinax acantJiius L." on the coast of Belgium. He also reported 

 (p. 31), from the gills of Trigla gurnardus, a species which he called 

 "AnchoreUa ovalis Kr0yer," and of which he gave a figure (pi. 2, 

 fig. 8). But this figure shows no similarity whatever to Kr0yer's 

 ovalis, while it does resemble in all essential particulars his Lernaeopoda 

 ohesa. 



T. Scott described (1901, p. 133) from the gills of Trigla gurnardus 

 on the Scottish coast a parasite which he referred to Kr0yer's A. 

 ovalis, basing liis Judgment upon Beneden's figure. But as Beneden 

 was wrong, so of course Scott was misled, and the species he had was 

 not ovalis at all, but ohesa. The excellent figures given by Scott 

 (pi. 7, figs. 30 to 35) leave no doubt that he was really dealing with 

 the same species examined by Kr0yer and Olsson. But it belongs 

 m the genus Brachiella where Olsson placed it, and is here restored 

 to that genus. 



Kichiardi in the hst already mentioned (1880, p. 151) named a 

 parasite which he obtained from ''Trigla corax'' in the Mediterra- 

 nean, Brachiella ohesa, but gave no description or figures. This was 

 probably the same as Kr0yer's species, but even if it was not Kr0yer's 

 name holds precedence. 



B. ohlonga Valle, 1880, p. 76, is another mere name and has never 

 been described or figured. 



B. ovalis (Beneden) Scott, 1901, p. 133, as shown above, is a syno- 

 nym of ohesa. 



B. parleri Thomson, 1889, p. 374, can not belong to any of the genera 

 previously described and is made the type of the new genus Thom- 

 sonella, closely related to Brianella (see p. 649). 



B. pastinacae Beneden, 1851, p. 118, is a synonym of Charopinus 

 hicaudatus (see p. 656). 



B. pernettiana (Blainville) , 1822, p. 439, was originally described 



and figured as a ''Lernaean" by Pernetti (1770, vol. 1, pi. 1, figs. 5, 6). 



Blainville included it in his new genus Lernaeomijzon and gave a 



brief description. Cuvier (1830, p. 257) referred it to the genus 



