LERKEOPODA CLTJTH^. 199 



which are not divergent, consist of two short slender 

 processes instead of being broadly oval or claviform 

 and reflexed upon the abdomen. 



Habitat. — Parasitic on the gill-filaments of the 

 Fuller's ray (Raia fullonica). Firth of Clyde, May, 

 1897 (T. Scott). 'Northumberland coast (May E. 

 Baiiibridge) on Raia radiata. 



This species has not been observed on any of the 

 dog-fishes, but only on the gill-filaments of the rays 

 mentioned. 



P. Olsson has described a Lernseoyoda (L. longimana) 

 from the same species of skate.* The female only is described, 

 and it appears from his description and figures to be distinct 

 from the species recorded here. 



4. Lernaeopoda salmonea (Linn.). 

 (Plate LIX, figs. 1-6 ; Plate XL VIII, figs. 8-12.) 



1761. Lernxa salmonea Linn. (77) p. 509, No. 2102. 

 1780. Lermea salmonea Cordiner. (36) p. 7, 8, pi. 6, fig. 2. 

 1816. Entomoda salmonea Lamarck. (72) p. 233. 

 1822. Lerneopoda salmonea Blainville. (24) p. 127. 

 1837. Lermeopoda varpionis (?) Kroyer. (70; (1) pi. ii, fig. 6. 

 1840. Basenistes salmonea M. Edwards. (43) p. 509, pi. xli, fig. 3. 

 1850. Lerneopoda salmonea Baird. (4) p. 335, pi. xxxv, fig. 6. 

 1863. Lerneopoda salmonea Kroyer. (71) p. 275, pi. xiv, fig. 3 a-f. 

 1900. Lernseopoda salmonea T. Scott. (112) p. 173, pi. viii, fig. 26. 



Female. — Cephalothorax, seen from above, sub- 

 triangular, small, enlarged behind and distinctly 

 separated from the posterior part of the body. The 

 genital segment, where it joins the cephalothorax, 

 narrowed and forming a kind of neck ; the segment 

 then becoming considerably enlarged and ovoid or 

 pyriform, the posterior end rounded and provided 

 with two minute apical knobs, one on each side of the 

 abdomen which is very small. 



The two pairs of antennae and the appendages of 

 the thorax somewhat similar to those of Lernseopoda 

 galei except that the second maxillipeds are tolerably 

 stout and short, and the chitinous plug to which they 



* "Prodr. fauna Copep. parasit. Scand.," ' Acta Universitatis Lundensis/ 

 1869 ; ' Lunds Univ. Arsskrift,' iii, p. 30, pi. 2, figs. 13-15. 



