154 ANNALS OF SCOTTISH NATURAL HISTORY 
Society of London," there seems still to be some diversity 
of opinion. This question, however, does not need to be 
discussed here. The point of interest in the following 
remarks is rather the fact that Copepods are found in the | 
nostrils of fishes, living apparently on the mucus they contain. 
I have found free-moving (not fixed) Copepods in the 
nostrils of the following fishes:—The Lumpsucker (Cyclop- 
terus lumpus); Cod (Gadus callarius); Whiting (Gadus 
merlangus); Pollack (Gadus pollachius); Plaice (Pleuronectes 
platessa); and Flounder (Pleuronectes flesus). All the Cope- 
pods that have hitherto been observed in the nostrils of these 
fishes belong to the genus Bomolochus, which was instituted 
by Professor Alex. von Nordmann in 1832 for a Copepod 
found on the gills of a fish from the Red Sea, and which is 
now known as Bomolochus parvulus, Nordmann. On the 
other hand, the specimens obtained in the nostrils of the 
fishes I have mentioned appear all to belong to a species 
described by Professor Claus under the name of Bommolochus 
solee, from specimens which had been found on the Sole (.Solea 
vulgaris). Jam not sure as to what part of the Sole the 
specimens described by Professor Claus were taken from ; 
but I may state that several years ago one or two specimens 
of a Copepod supposed to belong to Claus’ species were 
found adhering to the coloured side of a Sole captured in 
the Humber near Grimsby. It may also be stated that 
there is in part iii. of the “Eleventh Annual Report of the 
Fishery Board for Scotland” a description, with drawings, 
of a specimen of the same Copepod species which was 
found amongst some dredged material collected in the 
Fluke Hole off St. Monans, Firth of Forth, in 1892. 
The genus Lomolochus belongs to the Ergasilide, a 
family which contains two other genera besides the one 
mentioned, viz. Argaszlus, Nordmann; and Thersztes, Pagen- 
stecher. Dr. Basset Smith has published an excellent paper 
in the “ Proceedings of the Zoological Society of London” 
for April 1899, in which he gives a “ Systematic Description 
of Parasitic Copepoda found on Fishes.” The number of 
1 «On the Presence of Nasal Secretory Sacs and a Naso-pharyngeal Com- 
munication in Teleostei,” by H. M. Kyle, M.A. (‘Journ. Linn. Soc.,” Zool., 
vol. xxvil. p. 451 e¢ seg., April 1900). 
4 «« Mikrographische Beitrage,” Zweites Heft, p. 135 (1832). 
a ee 
