162 Proceedings of the Royal Physical Society. 



Genus (52) Guernea, Chevreux, 1887. 



88. Guernea coalita (Norman). 



1868. Helleria coalita, Norman, Ann. and Mag. Nat. Hist. (4), 

 vol. ii. p. 418, pi. xxii. fig. 8 ; pi. xxiii. figs. 1-6. 



1887. Guernea coalita, Chevreux, Bull. Soc. Zool. de France, vol. xii. 

 p. 16 (separate copy). 



Habitat- — Dredged off St Monans, 12 to 14 fathoms, 

 1889-90. In a gathering of dredged material from the same 

 place, collected on 22nd May 1901 ; not uncommon. 



Family Melphidippid^e. 

 Genus (53) Melphidippella, G. 0. Sars, 1893. 



89. Melphidippella macera (Norman). 



1869. Atylus macer, Norman, Brit. Assoc. Report (1868), p. 280. 

 Habitat. — Taken with bottom tow-net at Station V., 16th 

 April 1892. At the same Station on 24th April, and at 

 Station VI. on 22nd May 1901 ; not common. 



Family Gammaeida 

 Genus (54) Amathilla, Spence Bate, 1863. 



90. Amathilla homari (J. C. Fabricius). 



1798. Gammarus homari, Fabr., Entom. Syst. Suppl., p. 418. 

 1863. Amathilla Sabini, Bate and Westw., Brit. Sessile-eyed Crust., 

 vol. i. p. 361. 



Habitat. — Dredged near May Island, 1889. Also at 

 Station IV, 23rd December 1892, and Station VII., 23rd 

 February 1894; rare in the adult stage. 



Genus (55) Gammarus, Fabricius, 1776. 



91. Gammarus marinus, Leach. 



1815. Gammarus marinus, Leach, Trans. Linn. Soc, vol. xi. p. 359. 

 1863. ,, ,, Bate and Westw., op. cit., vol. i. p. 370. 



Habitat. — Taken near Culross, west of Queensferry, 1892. 

 Between tide-marks, Dalmeny shore, November 1904 (Evans). 

 Generally but sparingly distributed throughout the estuary. 



