go - ANNALS OF SCOTTISH NATURAL HISTORY 
Copepoda.” Geisbrecht! in 1882 pointed out some of the . 
doubtful characters in the description of this species in both 
the works named, but he apparently failed to realise the 
important significance of the characters he had called in 
question. In a capital work by Dr. Eugene Canu lately 
published, entitled “Les Copepodes du Boulonnais,” that 
author again calls in question the accuracy of the description 
of Longipedia coronata in these same two monographs, but 
ascribes the error, in the one case to a young male having 
been described for an adult, and in the other case to a 
misunderstanding as to the sexes. The following are Dr. 
Canu’s remarks: “Formes jeunes tres fréquentes et peut-étre 
plus nombreuses dans une méme péche que les adultes ; ce 
que pourrait expliquer les méprises faites par Claus (jeune 6 
décrit pour l’adulte) et Brady (confusion entre les deux sexes 
@ immatures) et relevées par Geisbrecht.”? Dr. Canu has 
thus evidently missed the true explanation of the difference 
between the so called “male” and “female” forms; at least 
so far as regards the description of Longipedia in “ British 
Copepoda.” 
A short time ago one of the writers of the present 
remarks (Andrew Scott), while examining a quantity of 
material dredged in Largo Bay, Firth of Forth, in 1891, 
observed as usual both forms of Longipedia coronata—zee. 
“males” and “females”; he also observed that some of the 
“males” carried one ovisac! and one or two of the “ females ” 
two ovisacs! This discovery naturally led to further inquiry - 
being made, with the result that two distinct species of 
Copepoda were found to have been mixed up under the one 
name, the so-called “male” being the true “female” of the 
Longipedia, while the so-called “ female” was found to be the 
female of a new and distinct species, for which we have had 
to provisionally institute a new genus. Both males and 
females of this new species have now been obtained. A pre- 
liminary description of the true Longipedia coronata and of the 
new species is given below. Full descriptions (with drawings) 
are being prepared for the Annual Report of the Fishery 
Board for Scotland, to be published during the summer. 
1 «Die freilebenden Copepoden der Kieler Fohrde.” 
2 ‘Les Copepodes du Boulonnais” (1892), p. 146. 
