198 BRITISH PARASITIC COPEPODA. 



peds short, stout, and furnished with strong terminal 

 claws. 



Habitat. Found parasitic on various dog-fishes, 

 usually adhering to the ventral and anal fins. At 

 Polperro on the toper (Galeus vulgaris), and from 

 cod (A. M. Norman). At Plymouth "from Galeus 

 vulgaris, Mustelus vulgaris, and Acanthias vulgaris " 

 (Bassett-Smith). Belfast, 1839 (W. Thompson). Off 

 Valentia (W. F. Kane). Irish Sea (A. Scott). The 

 Firth of Clyde, Moray Firth, Aberdeen (T. Scott). 



3. Lernseopoda cluthae T. Scott. 



(Plate LX, figs. 1-3; Plate LVII, figs. 1-7; Plate 

 LVIII, fig. 16.) 



1900. Lemseopoda cluthte T. Scott. (112) p. 173, pi. viii, figs. 27-37. 

 1909. Lemaeopoda duthx May E. Buinbridge. (3) p. 49, pi. 10, figs, 

 24-27. 



Female. Cephalothorax small, sub triangular, a dis- 

 tinct and narrow neck connecting it with the posterior 

 portion of the body, which is somewhat dilated and 

 subcylindrical, and exhibits a few pseudo-constrictions. 

 Two short processes springing from the distal end of 

 the genital segment ; the abdomen, situated between 

 them, very small. The two pairs of antennae similar 

 to those of the species already described. Mandibles 

 small and their biting margins, which are obliquely 

 truncated, finely and somewhat irregularly serrated, 

 and differing very markedly from the same appendages 

 in Lernssopoda galei; maxillae small, end joint provided 

 with two tolerably long and stout terminal spines. 

 The first maxillipeds more slender and rather more 

 elongate than those of L. galei. Length, from the 

 forehead to the end of the posterior appendages, 

 5 mm. ; length of the second maxillipeds nearly 3'5 mm. 



Male. The male differs considerably from that of 

 the species just described (L. galei), particularly in 

 the structure of the abdomen and of the caudal rami. 

 In the species under consideration the abdomen of the 

 male is distinctly segmented, and the caudal rami, 



