264 Part III. — Twelfth Annual Beport 



Family Leucothoid^e. 



Genus Leucothoe, Leach (1814). 



Leucothoe lilljeborgii, Boeck, 1860. 



1860. Leucothoe Ulljeborgii, Boeck, Forhandl. Skand. Naturf. 

 8 de Mode. 



1888. Leucothoe furina, Chevreux (non furina Savigny) (12), p. 9. 



1889. Leucothoe imparicornis, Norman (24), p. 114, pi. x. figs. 1-4. 



1892. Leucothoe incisa, Eobertson (27), p. 23. 



Habitat — Vicinity of the Bass Rock. Rare. This species is readily 

 recognised by the form of the last pair of epimeral plates of the meta- 

 some. 



Family PARAMPHITHOIDiE. 



i 



Genus Paramphithoe, Bruzelius (1859). 



Paramphithoe monocuspis, G. 0. Sars. 



1893. Paramphithoe monocuspis, G. O. Sars (29), p. 351, pi. cxxiii. 

 fig. 2. 



I record this species for the Firth of Forth on the authority of Dr A. 

 M. Norman. It was sent to him by Dr Henderson in 1884. Some time 

 ago, when looking over a number of Forth Amphipoda, I observed one of 

 the specimens with a single dorsal cusp, which, on further examination, 

 was found to resemble this species fairly well: it was, however, laid aside 

 for further study. 



Paramphithoe assimilis, G. 0. Sars. 



1882. Paramphithoe assimilis, G. 0. Sars (28), p. 99, pi. v. fig. 1. 

 1888. Paramphithoe assimilis, D. Robertson (26), p. 94. 

 1893. Paramphithoe assimilis, G. O. Sars (29), p. 352, pi. cxxiv. 

 fig. 1. 



Habitat. — Found adhering to some zoophytes dredged between the 

 Island of Inchkeith and the May. The Forth specimens belong to Param- 

 phithoe assimilis, G. 0. Sars, as described in ' Crustacea of Norway,' and 

 not to Pleustis glaber, Boeck (Parapleustis glaber in ' Crustacea of 

 ' Norway,' p. 358). 



Family Iphimedid^:. 



Genus Iphimedia, Rathke (1843). 



Iphimedia minuta, G. 0. Sars. 



1882. Iphimedia minuta, G. 0. Sars (28), p. 100, pi. v. fig. 2. 



1892. Iphimedia minuta, D. Robertson (27), p. 23. 



1893. Iphimedia minuta, G. 0. Sars .(29), p. 379, pi. cxxxiii. fig. 1. 



Habitat. — North end of Inchkeith, and in other parts of the Forth. 



This species has been known to me for a considerable time as quite distinct 

 from Iphimedia obesa. Though not a common species it has been 

 obtained at several places within the estuary. 



Family Atylid^e. 



Genus Apherusa. 



Apherusa borealis (Boeck). 



1893. Apherusa borealis, G. 0. Sars (29), p. 441, pi. cxv. fig. 2. 



Habitat. — In various places within the Forth area, between the Island of 

 Inchkeith and the May, as well as outside of the May Island. Sometimes 



