122 Proceedings of the Eoi/al Physical Society. 



Genus (6) Gastrosaccus, ISTorman, 1869. 



10. Gastrosaccus spinifer (Goes). 



1863. Mysis spinifer, Goes, Ofvers K. Vet.-Akad. Hand!., vol. xx. 

 p. 14. 



1872. Acantkocaris Living stoniana, G. Sim, Scottish Naturalist, 



vol. i. p. 185, pi. iv. fig, B, 1-7. 



Habitat. — Obtained frequently in surface tow-net gather- 

 ings collected off Bo'ness in 1887-88, and subsequently at 

 various places throughout the estuary. 



Genus (7) Heteromysis, S. I. Smith, 1873. 



11. Heteromysis formosa, S. I. Smith. 



1873. Heteromysis formosa, Smith, U.S.A., Fish and Fisheries 



Comm. Kept., 1871-72, p. 553. 



Hahitat. — ^^One or two specimens were captured off the east 

 side of Inchkeith in October 1888. Taken also at Station I. 

 in August 1894, and at Station IV. on 27th February 1895. 



Genus (8) Erythrops, G. O. Sars, 1870. 



12. Erythrops erythrophtholmus (Goes). 



1863. Mysis erythrophthalmus, Goes, Crust. Decap. Marina 



Suecicse, p. 18. 

 1870. Erythrops Goesii, G. 0. Sars, Carcin. Bidrag til Norges Fauna, 



I. Monogr. Mysider, p. 24, pi. i. 



Habitat. — Frequent in all parts of the estuary between 

 Inchkeith and May Island, especially during the winter and 

 spring. 



13. Erythrops elegans, G. 0. Sars. 



1863. Nematop'us elegans, G. 0. Sars, Beret, cm en i Somm. 1862 

 foret. zool. Reise i Chr. oy Throndhjems Stifter, p. 42. 



Habitat. — Firth of Forth, 1901, taken very sparingly on 

 one or two occasions. 



14. Erythrops serraUis, G. 0. Sars. 



1870. Erythrops serratus, G. 0. Sars, Monogr. M3^sider (I.), p. 27, 

 pi. ii. figs. 1-12. 



Habitat. — Obtained in 1889 in the neighbourhood of the 

 Bass Piock, rare. 



