212 BRITISH PARASITIC COPEPODA. 



1906. Brachiella pastinacse Brian. (21) p. 103. 



1909. Brachiella pasiinaca May E. Bainbridge. (3) p. 50, pi. 8, figs. 

 6, 7 ; pi. 9, fig. 8. 



Female. — Cephalothorax tolerably enlarged and 

 somewhat gibbons behind on the dorsal aspect, con- 

 nected with the genital segment by a narrow neck. 

 Genital segment oblong, robnst, and at the distal end 

 bearing two slender snbmedian appendages nearly half 

 as long as the segment. Abdomen obsolete or nearly so. 



Antennules moderately slender and fonr-jointed ; 

 antenna? stont, composed of two joints, and fur- 

 nished with a small rudimentary outer ramus, 

 Mandibles tolerably slender and armed with several 

 coarse teeth at the distal end of the inner margin. 

 The first maxilhpeds tolerably large and strongly 

 uncinate. The second maxillipeds nearly as long 

 as the cephalothorax, free except at the tips where 

 they are united to a horn-coloured chitinous plug. 

 Length about 7" 5 mm. 



Habitat. — Parasitic in the nasal fossa? of Trigon 

 pastinaca and also of the piked dog-fish [Acanthi as 

 vulgaris). In the nasal fossa? of a Trigon captured in 

 the Dornoch Firth in October, 1903 (T. Scott). In 

 the spiracle of a spiked dog-fish captured off the 

 coast of Northumberland (May E. Bainbridge).* 



9. Brachiella parkeri G. M. Thomson. 

 (Plate LXIV, fig. 7.) 



1889. Brachiella parkeri Thomson. (132) p. 374, pi. 10, figs. 18-23. 

 1909. Brachiella parkeri May E. Bainbridge. (3) p. 52, pi. 9, figs, 

 16, 17 ; pi. 10, figs. 18-23. 



Female. — Cephalothorax moderately stout, deflected 

 so as usually to be nearly at right angles to the genital 

 segment, and equal to about two-thirds the length of it. 

 Genital segment of an ovate form, moderately dilated, 

 and provided with two elongated and rather slender 

 distal appendages, one on each side of the papilliform 

 abdomen. Antennules moderately elongated, slender, 

 and composed of two articulations; antenna? some- 



* Miss May Evelina Bainbridge, now the Hon. Mrs. Henn Collins. 



