346 Proceedings of the Royal Physical Society. 



204. Cyclopina littoralis (G. S. Brady). 



1872. Cyclops littoralis, Brady, Nat. Hist. Trans. Northumb. and 



Durham, vol. iv. p. 429, pi. xvii. 



figs. 9-14. 

 1878. Cyclopina littoralis, idem, Monograph, vol. i. p. 92, pi. xv. 



figs. 1-9. 

 1900. ,, ,, Giesb., Mitth. fiber Copep., Mitth. a. d. 



Zool. Station z. Neapel, Bd. 14, p. 43, 



pi. iii. figs. 1-13. 



Hab. — Collected at Crainond Island in rock-pools ; dredged 

 off Musselburgh and other parts of the estuary, especially in 

 the littoral and laminarian zones ; not uncommon. 



205. Cyclopina elegans, T. Scott. 



1894. Cyclopina elegans, T. Scott, Twelfth F. B. Rept., pt. iii. 



p. 237, pi. v. figs. 9-19. 

 1900. ,, ,, Giesb., Mitth. fiber Copep., Mitth. a. d. 



Zool. Station z. Neapel, Bd. 14, p. 44, 



pi. iii. figs. 14-22. 



Hab. — This species has been taken off St Monans, but not 

 common. 



Genus (87) Pterinopsyllus, G. S. Brady, 1880. 



(Syn. Lophophorus, Brady, 1878, a name preoccupied by 

 Temminck in 1815 for a genus of Birds.) 



206. Pterinopsyllus insignis, G. S. Brady. 



1878. Lophophorus insignis, G. S. Brady, Monograph, vol. i. p. 122, 



pi. xiii. figs. 1-10; pi. xv. fig. 10. 

 1880. Pterinopsyllus insignis, idem, ibidem, vol. iii. p. 23. 



Hab. — This species was on several occasions observed 

 moderately frequent in dredged material collected to the 

 west of Queensferry, but appeared to be rare near the sea- 

 ward limits of the estuary. 



Genus (88) Cyclops, O. F. Miiller, 1776. 



The members of this genus are, with few exceptions, 

 fresh-water or brackish-water species. Those recorded here 



