Part III. — Seventeenth Annual Report 



Dermatomyzon nigripes (Brady and Robertson). 



1875. Cyclopicera nigripes, Brady and Robertson, Brit. Assoc. 

 Report p. 197. 



This fine species occurred in only one of the gatherings at present 

 under consideration — viz., in a bottom tow-net gathering from Station 

 XV. (Moray Firth), collected 20th November 1897. 



Rhynchomyzon purpurocinctum (T. Scott). 



1893. Cyclopicera purpurocinctum, T. Scott, Eleventh Ann. Rep. 

 Fish. Board for Scot., Part III., p. 209, PI. III., figs. 29-40. 



This well-marked species was obtained in the gathering from Station 

 XV. (Moray Firth), in which Dermatomyzon nigripes occurred, and in 

 another collected at Station II., also in the Moray Firth, 5th November 

 1897. In this species the last three thoracic segments are of a dark 

 purple colour. Dr. W. Giesbrecht has found Rhynchomyzon pur- 

 purocinctum in Naples Bay. 



Neopontius angularis (T. Scott). 



1898. Neopontius angularis, T. Scott, Sixteenth Ann. Rep. Fish. 

 Board for Scot., Part III., p. 271, PI. XIV., figs. 1-11. 



This species was described in 1898 from specimens obtained at Otter 

 Spit, Upper Loch Fyne. I have now to record it from a bottom tow-net 

 gathering from Station IV. (Kilbrennan Sound), Firth of Clyde, 

 collected 24th August 1898 (27-29 fathoms). 



Bradypontius papillatus (T. Scott) (PI. XL, fig. 21 • PI. XII., figs. 7-15). 



1888. Artotrogus 'papillatus, T. Scott, [Sixth Annual Report of 

 the Fishery Board for Scotland (Appendix), p. 232, PI. VIII., 

 figs. 7-12. 



1895. (?) Bradypontius clielifer, Giesbrecht, Ann. and Mag. Nat. 

 Hist., ser. 6, vol. xvi. p. 183 (August 1895). 



This species, described in 1888 in the Sixth Annual Report of the 

 Fishery Board for Scotland, has recently been re-examined, and some 

 further details of structure have been elucidated which I now propose to 

 notice by way of supplementing the original description. 



The length of the specimen figured is 1 '2mm. (^ of an inch). The 

 first thoracic segment is equal to rather more than half the length of the 

 thorax and abdomen combined; the abdomen is moderately elongate, and 

 the f urcae are rather longer than broad. In general appearance this species 

 somewhat resembles Cribropontius normani (B. and R.) (fig. 7, PI. XII.). 



The antennules are eight-jointed. The first and second joints are elon- 

 gate ; the third to the seventh are comparatively short ; while the last is 

 about twice the length of the penultimate joint (fig. 8, PI. XII.). The 

 proportional lengths of all the joints are approximately as shown by the 

 formula — 



Numbers of the joints, 1 ■ 2 ■ 3 1 ^ • 5 • 6 • 7 ' 8 



Proportional lengths of the joints, 36 • 50 • 18 • 10 • 14 • 12 • 16 • 31 



A moderately long asthetask springs from the end joint, as shown in 

 the figure. 



The antennae are apparently four-jointed, and a very small secondary 

 branch bearing two minute hairs springs from the end of the second joint 



