93 MB. THOMAS SCOTT ON THE 



other species ; it was dredged off East Glacier, off Cape Gertrude 

 in 30 fathoms, and in 8 fathoms off Cape Plora, in July 1897. 

 This is not an uncommon species in the British seas. 



Genus Delay alia, Brady, 1868. 



Delavalia eobusta, Brady Sf Bobertson. 



]875. Delavalia robusta, Brady & Robertson (22), p. 196. 



This species was dredged off East Glacier in 30 fathoms and 

 in 2 to 4 fathoms off West Point, Cape Elora, in July 1897. 

 Several specimens were obtained. 



Delavalia mimica, T, Scott. 



1897. Delavalia mimica, T. Scott (82), p. 150, pi. 1. figs. 1-9. 



A number of specimens of this distinct species were obtained 

 in gatherings dredged off West Poiut, July 5th, and off East 

 Glacier, July 21st, ] 897. The species is described and figured 



Part iii. of the 15th Annual Eeport of the Fishery Board for 

 Scotland (1897), from specimens obtained in the Eir'ch of Clyde ; 

 it has also been observed in the Eirth of Eorth. 



Delayalia reflexa, Brady Sf Bobertson. 



1876. Delavalia refiexa, Brady & Bobertson (22), p. 196. 



A few specimens of Delavalia reflexa were obtained in a 

 gathering collected off East Glacier. In this species the inner 

 branches of the first pair of swimming-feet want the stout 

 spiniform terminal seta that distinguishes D. rohusta ; in 

 D. reflexa the terminal setse are slender. 



Delayalia aectica, sp. n. (PI. 5. fig. 14 ; PI. 6. figs. 7-11.) 

 The female specimen represented by the figure (fig. 7, PI. 6) 

 measured fully 1 mm. (Jg- of an inch) in length from the end of 

 the rostrum to the extremity of the caudal furca. The species 

 somewhat resembles Delavalia palustris, Brady, in general outline. 

 The antennules (anterior antennae) are 8-jointed (fig. 8, PI. 6) ; 

 the proportional lengths of the joints are indicated approxi- 

 mately by the formula : 



Proportional lengths of the joints 20 . 12 . 11 . 8 . 7 . 8 . 6 . 8 



Numbers of the joints 1 2 3 4 6 6 7 8* 



The mouth-organs are somewhat similar to those of Delavalia 

 giesbrecliti, T. Scott, except that the second foot-jaws are com- 

 paratively robust ; the first joint bears one slender and two stout 

 spiniform setae at the extremity of the inner margin ; the terminal 



