162 Part I11.—Siateenth Annual Report 
Mysidopsis angusta. The only records of this species are all for 1890 
except one, and comprise one for Stations I. and III. in October, and 
one for Station V. in October, November, and December in 1890, and one 
for Station III. in 1891. 
Leptomysis lingoura is recorded once during the seven years—viz., for 
Station IIL. in March 1892. 
Hemimysis lamorne. This Schizopod is recorded three times in 1892— 
viz., twice for Station [., once in January and once in March, and for 
Station TX. in December. The species is recorded again in 1893 for 
Station V. in January, and in 1895 for Station III. in February and 
Station VIII. in December. 
Macropsis slabbert, remarkable among British Schizopods for the 
length of the eye-stalks, is of frequent occurrence over a considerable 
portion of the Forth estuary, and specially in the upper reaches. While 
several of the species mentioned here may be regarded as only visitors, 
this appears to be a resident, at least in that part of the Firth which 
extends westward from Queensferry. In this part of the Forth, which may 
be considered the headquarters of the species on the East Coast of Scot- 
land, it may sometimes be found in large numbers, and its presence 
seaward may be due to the overcrowding in these waters causing a greater 
amount of migration to take place, though it is also possible that the 
species may be resident in the seaward as well as the landward part of 
the Firth. The records of the species that have to be noted in connec- 
tion with the present inquiry are the following :—The first reference to 
Macropsis occurs in February 1890 for Station IV., and again for the 
same station in March. There is no further record of it till October, 
when it is again recorded for that station and also for Stations I. and III. 
It is again recorded for the same three stations in November, and the 
November record for Station IV. is for both surface and bottom tow-nets, 
while the others are for the bottom tow-nets only. In 1891 there are 
records of this species for Stations III. and IV. in January, for Stations 
I. and III. in October, and in the same months for Station IV. The 
October record for Station IV. is for the surface tow-net. In July of 
the same year Macropsis is recorded as frequent in a surface tow-net 
gathering at Station VIII. in July, which seems to indicate a consider- 
able migration of the species seaward, either from the upper parts of the 
estuary or elsewhere. In 1892 it is recorded for Station I. in January 
and for Station IV. in March. In 1893 the first record is for Station LV. 
in January, while the next records are for Stations I. and III, the first 
being for November, the other for October. There are no records of 
Macropsis for 1894. The records for 1895 include one for Station III. 
in February and another for the same station in October. ‘There is one 
for Station IV. in February, and two for the same station in October, one 
for the surface tow-net and one for the bottom tow-net ; and another for 
the same station in December. 
Praunus flexuosus. This species, which is more familiar by its older 
name of Mysis chameleon or Mysis flexuosa, is, though a common one, in- 
frequent among the tow-net invertebrates from the selected stations. In 
1892 it is recorded for Station IV. in January and March; in 1893 for 
Station III. in December ; in 1894 for Station III. in February ; and in 
1895 for Station [V. in January, and for the same station in February. 
Praunus flecuosus was observed only among bottom tow-net gatherings, 
